Agilent ADJD-J823 Color Management Controller with Integrated RGB Photosensor Data Sheet Features Description The ADJD-J823 is a CMOS mixed-signal IC with integrated RGB photosensors designed to be the optical feedback device of an RGB LED-based backlighting system. A typical system consists of an array of red, green and blue (RGB) LEDs, LED drivers and the ADJD-J823. The device samples the light output from the RGB LED array, processes the color information and adjusts the light output from the RGB LEDs until the target color is achieved. To achieve this, the device integrates an RGB photosensor array, an analog-to-digital converter front-end, a color data processing logic core and a high-resolution 12-bit PWM output generator. By employing a feedback system and the ADJD-J823, the light output produced by the LED array maintains its color over time and temperature. In addition, using a serial interface, specifying the color of the LED array's light output is as simple as picking the target color coordinates from the CIE color space and writing several bytes of data to the device. * Integrated RGB photosensor The sensitivity of the device to light can be adjusted through an automated process. The PWM output signals control the on-time duration of the red, green and blue LEDs. That duration is continually adjusted in real-time to match the light output from the RGB LED array to the target color. * LCD Backlighting * Integrated color management feedback controller * Serial Interface * Direct interface to standard I2C EEPROM * 3-channel 12-bit PWM output - Red, Green and Blue LED channels * Built-in oscillator Applications Package Dimensions 0.75 0.1 A Seating Plane 0.2 ref 0.3 0.65 ref 1.05 3.2 ref 5.0 0.1 3.2 ref 0.5 ref 5.0 0.1 Note: Dimensions are in millimeter (mm) Bottom View Pin 1 Pin 15 Pin 14 Pin 13 Pin 12 Pin 11 2 Pin 1 marker notch Pin Information PIN NAME TYPE DESCRIPTION 1 NC No connect No connect. Leave floating. 2 PWMB Output PWMB is the active-high blue pulse width modulation output pin. Tie it to the blue LED driver channel. 3 PWMG Output PWMG is the active-high green pulse width modulation output pin. Tie it to the green LED driver channel. 4 PWMR Output PWMR is the active-high red pulse width modulation output pin. Tie it to the red LED driver channel. 5 DGND Ground Tie to digital ground. 6 DGND Ground Tie to digital ground. 7 DVDD Power Digital power pin. 8 AGND Ground Tie to analog ground. 9 CLKIO Output CLKIO outputs a reference internal clock signal. 10 XRST Input Global, asynchronous, active low system reset. When asserted low, XRST resets all registers. Minimum reset pulse low is 10us and must be provided by external circuitry. 11 SCLSLV Input 12 SDASLV Input/Output (tri-state high) SDASLV and SCLSLV are the serial interface communications pins. SDASLV is the bidirectional data pin and SCLSLV is the interface clock. A pull-up resistor should be tied to SDASLV because it goes tri-state to output logic 1. 13 SCLPROM Output 14 SDAPROM Input/Output (tri-state high) 15 SLEEP Input When SLEEP=1, the device goes into sleep mode. In sleep mode, all analog circuits are powered down and the clock signal is gated away from the core logic resulting in very low current consumption. 16 AGND Ground Tie to analog ground. 17 AGND Ground Tie to analog ground. 18 AGND Ground Tie to analog ground. 19 AVDD Power Analog power pin. 20 NC No connect No connect. Leave floating. 3 An external serial I2C EEPROM can be connected to the device to store calibration and configuration data. SDAPROM and SCLPROM should be tied to the I2C data (SDA) and clock (SCL) pins of the EEPROM. A pull-up resistor should be tied to SDAPROM because it goes tri-state to output logic 1. Powering the Device No voltage must be applied to IO's during power-up and power-down ramp time VDDD / VDDA 0V tVDD_RAMP ESD Protection Diode Turn-On During Power-Up and Power-Down A particular power-up and power-down sequence must be used to prevent any ESD diode from turning on inadvertently. The figure above describes the sequence. In general, AVDD and DVDD should power-up and powerdown together to prevent ESD diodes from turning on inadvertently. During this period, no voltage should be applied to the IO's for the same reason. Block Diagram SDASLV SCLSLV RGB PHOTOSENSOR ARRAY SDAPROM SCLPROM PWMR PWMG PWMB DEVICE CONTROLLER XRST PHOTOCURRENT TO VOLTAGE CONVERSION RED PHOTOCURRENT TO VOLTAGE CONVERSION GREEN PHOTOCURRENT TO VOLTAGE CONVERSION BLUE SLEEP Ground Connection AGND and DGND must both be set to 0V and preferably star-connected to a central power source as shown in the application diagram. A potential difference between AGND and DGND may cause the ESD diodes to turn on inadvertently. 4 ANALOG TO DIGITAL CONVERSION General Specifications Feature Value Interface 100kHz serial interface Input color format CIE Yxy Output PWM frequency 6.35kHz (nominal) Output PWM resolution 12 bits Supply 2.6V digital (nominal), 2.6V analog (nominal) High Level Description Independent NVPROM A hardware reset (by asserting XRST) should be performed before starting any operation. It is assumed that factory calibration was performed prior deployment of ADJD-J823. Calibration is discussed at the end of this section. The NVPROM is independent from the device. During factory calibration, the host must read the register data from the device and write it to the NVPROM. At the start of The user controls and configures the device by programming a set of internal registers through a serial interface. At the start of application, the following register data must be written to it: * Frequency registers * Setup data * Calibration data * Bright and color input registers. The register data is usually gathered during a calibration process which is performed once in manufacturing. Factory calibration is needed at a system level to map the integrated tricolor sensor's reading (device dependent) with a standard device independent color space. Once the register data is entered, the feedback operation begins; the device starts to sample the RGB sensor using the internal ADC. That data is compared to a user-controlled color point target. The PWM duty factor for each channel is adjusted in response to any error signal generated by that comparison operation. Thus, the actual color produced by the LEDs is maintained close to the target. There are three methods to operate the device. They are differentiated by the technique in which the register data is stored and used. The three figures below describe the methods. NVPROM stands for Non-Volatile Programmable Read-Only Memory such as an EEPROM. 5 HOST CONTROLLER NVPROM Dedicated NVPROM in Interactive Mode A dedicated NVPROM is connected to the device. During factory calibration, the host can instruct the device to upload the register data to the NVPROM. At the start of application, the host can instruct the device to HOST CONTROLLER SCLSLV SCLSLV DEVICE SDAPROM DEVICE A dedicated NVPROM is connected to the device. During factory calibration, the host can instruct the device to upload the register data to the NVPROM. The difference versus Interactive Mode is that, in application, the device itself will download the register data and immediately after, enter normal mode. Then, it will start driving the SDAPROM SCLPROM SDASLV download the register data from the NVPROM, after which the device will wait for further instructions in normal mode. The serial interface protocol between device and NVPROM is hard coded. A standard NVPROM such as a serial I2C EEPROM with address 0x50 (7-bit) must be used. SDASLV Dedicated NVPROM in Standalone Mode DEVICE application, the host must read the register data from the NVPROM and write it back to the device, after which the device will wait for further instructions in normal mode. NVPROM SCLPROM NVPROM PWM channels to achieve a default target color point. The default color point is programmed after factory calibration. A host controller is not necessary during application. The serial interface protocol between device and NVPROM is hard coded. So, a standard NVPROM such as a serial I2C EEPROM with address 0x50 (7-bit) must be used. Factory Calibration Factory calibration is needed at a system level to create a `snapshot' of the initial conditions of the system. The color management algorithm references the snapshot data. In effect, the calibration data trims out variation in the entire signal chain from LEDs to sensor to ADC. The figure below shows the calibration procedure in brief. First, the device is put into "open loop" mode in which the color management algorithm is turned off. Second, the host controller needs to determine the optimum sensor sensitivity for the given brightness detection level. The sensitivity is a combination of several internal settings. Searching for the optimum settings can be performed manually or through an automatic search routine which is built into the device. The host can start the routine by issuing a command to the device. The device will then 6 turn the LEDs (usually at maximum duty factor) and start the search routine. Next, the host needs to turn only the Red LEDs on. An external camera must be set up to capture the CIE coordinates of the RED LEDs. The scaled XYZ readings are then written to the device. At the same time, the host needs to instruct the device to sample the RGB sensor and store the results. This is repeated for the Green and Blue LEDs. Lastly, the host needs to instruct the device to start a calibration calculator. The calculator uses the camera and sensor readings for each color to develop a mapping matrix that maps the RGB sensor to the standard CIE color space. The mapping matrix and other configuration data is the device setup data referred to in the previous section. Open Loop Sensor Gain Self-Adjustment Read and Store Red LEDs Data Read and Store Green LEDs Data Read and Store Blue LEDs Data Compute Calibration Data Store Calibration Data & Other Configuration Data Factory Calibration Flow Chart For details, refer to application note 5241 ADJD-J823 programming manual Electrical Specifications Absolute Maximum Ratings (Notes 1 & 2) Parameter Symbol Minimum Maximum Units Storage temperature TSTG_ABS -40 85 C Digital supply voltage, DVDD to DVSS VDDD_ABS -0.5 3.7 V Analog supply voltage, AVDD to AVSS VDDA_ABS -0.5 3.7 V Input voltage VIN_ABS -0.5 VDDD+0.5 V Solder Reflow Peak temperature TL_ABS 235 C Human Body Model ESD rating ESDHBM_ABS 2 kV Notes All I/O pins All pins, human body model per JESD22-A114-B Recommended Operating Conditions Parameter Symbol Minimum Typical Maximum Units Free air operating temperature TA 0 25 70 C Digital supply voltage, DVDD to DVSS VDDD 2.5 2.6 3.6 V Analog supply voltage, AVDD to AVSS VDDA 2.5 2.6 3.6 V Output current load high IOH 3 mA Output current load low IOL 3 mA Input voltage high level (Note 4) VIH 0.7VDDD VDDD V Input voltage low level (Note 4) VIL 0 0.3VDDD V Power supply ramp period tVDD_RAMP 100 ms DC Electrical Specifications Over Recommended Operating Conditions (unless otherwise specified) Parameter Symbol Conditions Minimum Typical (Note 3) Maximum Units Output voltage high level (Note 5) VOH IOH = 3mA VDDD-0.8 VDDD-0.4 V Output voltage low level (Note 6) VOL IOL = 3mA 0.2 0.4 V Dynamic supply current (Note 7,8) IDD_DYN (Note 9) 9.4 14 mA Static supply current (Note 8) IDD_STATIC (Note 9) 2.7 6 mA Sleep-mode supply current (Note 8) IDD_SLP (Note 9) 0.2 15 uA Input leakage current ILEAK 10 uA -10 AC Electrical Specifications Over Recommended Operating Conditions (unless otherwise specified) Parameter Symbol Internal clock frequency fCLK 7 Conditions Minimum Typical (Note 3) Maximum Units 16 26 MHz 38 Optical Specifications Parameter Symbol Conditions Minimum Maximum Units Sensor operating detection range EV (Note 3 &10) 800 10000 Lux Notes: 1. The "Absolute Maximum Ratings" are those values beyond which damage to the device may occur. The device should not be operated at these limits. The parametric values defined in the "Electrical Specifications" table are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. 2. Unless otherwise specified, all voltages are referenced to ground. 3. Specified at room temperature (25C) and VDDD = VDDA = 2.6V. 4. Applies to all digital input pins. 5. Applies to all digital output pins and CLKIO pin. SDASLV and SDAPROM pins go tri-state when output logic high. Minimum VOH depends on the pull-up resistor value. 6. Applies to all digital output and digital input-output pins. 7. Dynamic testing is performed with the IC operating in a mode representative of typical operation. 8. Refers to total device current consumption. 9. Output and bidirectional pins are not loaded. 10. Using R:G:B LED light source brightness ratio of 7:13:1 to achieve white D90 color point Red LED (x,y) = (0.700, 0.300) Green LED (x,y) = (0.171, 0.715) Blue LED (x,y) = (0.158, 0.019) Serial Interface Timing Information Parameter Symbol Minimum Maximum Units SCL clock frequency fscl 0 100 kHz (Repeated) START condition hold time tHD:STA 4 - s Data hold time tHD:DAT 0 3.45 s SCL clock low period tLOW 4.7 - s SCL clock high period tHIGH 4.0 - s Repeated START condition setup time tSU:STA 4.7 - s Data setup time tSU:DAT 250 - ns STOP condition setup time tSU:STO 4.0 - s Bus free time between START and STOP conditions tBUF 4.7 - s tHD:STA tHIGH tSU:DAT tSU:STA tBUF SDA SCL S Sr tLOW tHD:DAT Figure 1. Serial Interface Bus Timing Waveforms 8 tHD:STA P tSU:STO S Sensor Optical Performance The integrated sensor spectral respond graph from 400 to 700nm. The color indicates the color channel of the color sensor. Spectral response 1 Red Green Blue 0.8 Red Relative sensitivity Green 0.6 Blue 0.4 0.2 0 400 450 500 550 600 650 700 Wavelength (nm) System Performance Color Accuracy chart. Data obtain from 1078 units at 25oC and VDDD & VDDA at 2.6V. Color set point at CIE x=0.287, y=0.296 (9000K) The average du'v' is 0.002 with standard deviation 0.0012 and a maximum value of 0.0062. Color Accuracy 30.0% 24.9% 25.0% 22.0% Units 20.0% 15.0% 12.9% 10.0% 4.4% 5.0% 1.4% 0.0% 0 to <1 1 to <2 2 to <3 3 to <4 du'v' (x 0.001) 9 4 to <5 0.1% 0.0% 6 to < 7 >7 Color drift over temperature Data obtain from 5 units. Color set point is at 9000K and VDDD & VDDA at 2.6V. System consists of ADJD-J823 and RGB LEDs with color coordinates, Red (x,y) = (0.691, 0.309), Green (x,y) = (0.161, 0.704), Blue (x,y) = (0.131, 0.073). The R:G:B luminance ratio is 2.6 : 3.9 : 1.0 Color drift 0.009 0.008 0.007 du'v' 0.006 0.005 0.004 0.003 0.002 0.001 0 0 10 20 30 40 System temperature (C) 50 60 Note: The starting point is at 25oC and is zero color drift as all measurements are made relative to the starting point at 25oC. Calculating Sampling Frequency and PWM Output Frequency The sampling frequency, fSAMP, which is the frequency at which ADJD-J823 samples the tricolor photosensor, is related to the system clock frequency, fCLK. The output PWM frequency, fPWM, is also related to fCLK. Calculation example: fCLK = 26 MHz (nominal) fCLK fSAMP = = 108Hz(nominal) SAMPFREQ x 8 fPWM = fCLK = 6.35kHz(nominal) (PWMFREQ + 1) x 4096 SAMPFREQ = Sampling frequency register setting = concatenation of registers [0x06][0x07] PWMFREQ = PWM frequency register setting = register [0x05] The internal oscillator frequency varies from part-to-part but it will not vary as significantly during operation. 10 Serial Interface Reference Description The programming interface to the ADJD-J823 is a 2-wire serial bus. The bus consists of a serial clock (SCL) and a serial data (SDA) line. The SDA line is bi-directional on ADJD-J823 and must be connected through a pull-up resistor to the positive power supply. When the bus is free, both lines are HIGH. The 2-wire serial bus on ADJD-J823 requires one device to act as a master while all other devices must be slaves. A master is a device that initiates a data transfer on the bus, generates the clock signal and terminates the data transfer while a device addressed by the master is called a slave. Slaves are identified by unique device addresses. Both master and slave can act as a transmitter or a receiver but the master controls the direction for data transfer. A transmitter is a device that sends data to the bus and a receiver is a device that receives data from the bus. The ADJD-J823 serial bus interface always operates as a slave transceiver with a data transfer rate of up to 100kbit/s. START/STOP Condition The master initiates and terminates all serial data transfers. To begin a serial data transfer, the master must send a unique signal to the bus called a START condition. This is defined as a HIGH to LOW transition on the SDA line while SCL is HIGH. The master terminates the serial data transfer by sending another unique signal to the bus called a STOP condition. This is defined as a LOW to HIGH transition on the SDA line while SCL is HIGH. The bus is considered to be busy after a START (S) condition. It will be considered free a certain time after the STOP (P) condition. The bus stays busy if a repeated START (Sr) is sent instead of a STOP condition. The START and repeated START conditions are functionally identical. SDA SCL S START condition Figure 2. START/STOP Condition 11 P STOP condition Data Transfer The master initiates data transfer after a START condition. Data is transferred in bits with the master generating one clock pulse for each bit sent. For a data bit to be valid, the SDA data line must be stable during the HIGH period of the SCL clock line. Only during the LOW period of the SCL clock line can the SDA data line change state to either HIGH or LOW. SDA SCL Data valid Data change Figure 3. Data Bit Transfer The SCL clock line synchronizes the serial data transmission on the SDA data line. It is always generated by the master. The frequency of the SCL clock line may vary throughout the transmission as long as it still meets the minimum timing requirements. The master by default drives the SDA data line. The slave drives the SDA data line only when sending an acknowledge bit after the master writes data to the slave or when the master requests the slave to send data. The SDA data line driven by the master may be implemented on the negative edge of the SCL clock line. The master may sample data driven by the slave on the positive edge of the SCL clock line. Figure 4 shows an example of a master implementation and how the SCL clock line and SDA data line can be synchronized. SDA data sampled on the positive edge of SCL SDA SCL SDA data driven on the negative edge of SCL Figure 4. Data Bit Synchronization A complete data transfer is 8-bits long or 1-byte. Each byte is sent the most significant bit (MSB) first followed by an acknowledge or not acknowledge bit. Each data transfer can send an unlimited number of bytes (depending on the data format). P SDA SCL MSB S or Sr 1 START or repeated START condition Figure 5. Data Byte Transfer 12 LSB 2 8 ACK 9 MSB 1 LSB 2 8 NO ACK 9 Sr Sr or P STOP or repeated START condition Acknowledge/Not acknowledge The receiver must always acknowledge each byte sent in a data transfer. In the case of the slavereceiver and master-transmitter, if the slave-receiver does not send an acknowledge bit, the master-transmitter can either STOP the transfer or generate a repeated START to start a new transfer. SDA pulled LOW by receiver SDA (SLAVE-RECEIVER) Acknowledge SDA (MASTER-TRANSMITTER) SDA left HIGH by transmitter LSB SCL (MASTER) 9 8 Acknowledge clock pulse Figure 6. Slave-Receiver Acknowledge In the case of the master-receiver and slave-transmitter, the master generates a not acknowledge to signal the end of the data transfer to the slave-transmitter. The master can then send a STOP or repeated START condition to begin a new data transfer. In all cases, the master generates the acknowledge or not acknowledge SCL clock pulse. SDA (SLAVE-TRANSMITTER) SDA left HIGH by transmitter LSB P SDA (MASTER-RECEIVER) SCL (MASTER) SDA left HIGH by receiver 8 Not acknowledge Sr 9 Acknowledge clock pulse Figure 7. Master-Receiver Acknowledge 13 STOP or repeated START condition Addressing Each slave device on the serial bus needs to have a unique address. This is the first byte that is sent by the master-transmitter after the START condition. The address is defined as the first seven bits of the first byte. The eighth bit or least significant bit (LSB) determines the direction of data transfer. A `one' in the LSB of the first byte indicates that the master will read data from the addressed slave (master-receiver and slave-transmitter). A `zero' in this position indicates that the master will write data to the addressed slave (master-transmitter and slave-receiver). A device whose address matches the address sent by the master will respond with an acknowledge for the first byte and set itself up as a slave-transmitter or slave-receiver depending on the LSB of the first byte. The slave address on ADJD-J823 is 0x58 (7-bits). MSB LSB A6 A5 A4 A3 A2 A1 A0 1 0 1 1 0 0 0 R/W Slave address Figure 8. Slave Addressing Data format ADJD-J823 uses a register-based programming architecture. Each register has a unique address and controls a specific function inside the chip. To write to a register, the master first generates a START condition. Then it sends the slave address for the device it wants to communicate with. The least significant bit (LSB) of the slave address must indicate that the master wants to write to the slave. The addressed device will then acknowledge the master. The master writes the register address it wants to access and waits for the slave to acknowledge. The master then writes the new register data. Once the slave acknowledges, the master generates a STOP condition to end the data transfer. Start condition S Master will write data A6 A5 A4 A3 A2 A1 A0 W A Stop condition D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 Master sends Master writes Master writes slave address register address register data Slave acknowledge Figure 9. Register Byte Write Protocol 14 A Slave acknowledge A P Slave acknowledge To read from a register, the master first generates a START condition. Then it sends the slave address for the device it wants to communicate with. The least significant bit (LSB) of the slave address must indicate that the master wants to write to the slave. The addressed device will then acknowledge the master. The master writes the register address it wants to access and waits for the slave to acknowledge. The master then generates a repeated START condition and resends the slave address sent previously. The least significant bit (LSB) of the slave address must indicate that the master wants to read from the slave. The addressed device will then acknowledge the master. The master reads the register data sent by the slave and sends a no acknowledge signal to stop reading. The master then generates a STOP condition to end the data transfer. Start condition Repeated start condition Master will write data Master will read data Stop condition S A6 A5 A4 A3 A2 A1 A0 W A D7 D6 D5 D4 D3 D2 D1 D0 A Sr A6 A5 A4 A3 A2 A1 A0 R A D7 D6 D5 D4 D3 D2 D1 D0 A P Master sends slave address Master writes register address Slave acknowledge Master sends slave address Slave acknowledge Master reads register data Master not acknowledge Slave acknowledge Figure 10. Register Byte Read Protocol Application Diagrams NC CLKIO 1, 20 9 Float Float RGB LED DRIVER PWMR PWMG HOST PWMB SYSTEM XRST SLEEP SDA SCL 10 15 12 11 4 3 2 ENABLE_RED ENABLE_GREEN ENABLE_BLUE XRST I2C SERIAL SLEEP EEPROM SDASLV SDAPROM SCLSLV SCLPROM 14 13 SDA SCL Connect pull-up Connect pull-up resistor to SDA resistor to SDA AVDD 19 AGND 8, 16, DGND DVDD 5, 6 7 17, 18 Voltage Voltage Regulator Regulator Star-connected ground 15 Recommended Reflow Profile It is recommended that Henkel Pb-free solder paste LF310 be used for soldering ADJD-J823. Below is the recommended soldering profile. T -peak T -reflow 230 5 C/sec 218C/sec Delta -flux = 2C/sec max TEMPERATURE T -max T -min Delta -cooling = 2C/sec max 160C 120C Delta -ramp = 1C/sec max t -pre = 40-60 sec max t -peak = 20 - 40 sec max TIME 20 Lead QFN Recommended PCB Land Pad Design IPC-SM-782 is used as the standard for the PCB land pad design. Recommended PCB finishing is OSP. 0.8 mm 3.19 mm 5.5 mm 3.19 mm 0.4 mm 3.9 mm 5.5 mm 16 20 Lead QFN Recommended Stencil Design A stencil thickness of 2.18mm (6 mils) for this QFN package is recommended 0.8 mm 0.4 mm 2.18mm Recommendations for Handling and Storage of ADJD-J823 * Before Opening the MBB (Moisture Barrier Bag) - The sensor component must be kept sealed in a MBB (Moisture Barrier Bag) stored at 30C and 70%RH or less at all times. - It should also be seal with a moisture absorbent material (Silica Gel) and an indicator card (Cobalt Chloride) to indicate the moisture within the bag. * After Opening the MBB (Moisture Barrier Bag) - The sensor component must be kept at 30C and 60%RH or less - The sensor component should have a MET (Manufacturing Exposure Time) of 24 hours starting from the time of removal from the MBB to the soldering oven. - If unused sensor component remain, it is recommended to store them back to the MBB. - If the indicator card has turned from blue to pink or it has exceeded the recommended MET (Manufacturing Exposure Time) of 24hrs, baking treatment should be performed using the following conditions before continue to IR reflow soldering. - Baking treatment: 24 hours at 125C. 17 Package Tape and Reel Dimensions Carrier Tape Dimensions Reel Dimensions 18 www.agilent.com/ semiconductors For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (916) 788-6763 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6756 2394 India, Australia, New Zealand: (+65) 6755 1939 Japan: (+81 3) 3335-8152(Domestic/International), or 0120-61-1280(Domestic Only) Korea: (+65) 6755 1989 Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia: (+65) 6755 2044 Taiwan: (+65) 6755 1843 Data subject to change. Copyright (c) 2005 Agilent Technologies, Inc. December 1, 2005 5989-4059EN 19