TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 1 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Applications
24-pin 4x4mm leadless QFN package
Mobile Infrastructure
LTE / WCDMA / CDMA / EDGE
Test Equipment and Sensors
IF and RF Applications
General Purpose Wireless
Product Features
Functional Block Diagram
0.4 – 3.5 GHz
0.25 dB LSB Steps to 31.75 dB
+55 dBm Input IP3
1.7 dB Insertion Loss @ 2.5 GHz
CMOS compatible Serial Control Interface
Max attenuation state at initial power up
50 Ω Impedance
+5V Supply Voltage
General Description
Pin Configuration
The TQP4M9083 is a high linearity, low insertion loss, 7-bit,
31.75 dB Digital Step Attenuator (DSA) operating over the
0.4–3.5GHz frequency range. The digital step attenuator uses
a single positive 5V supply and has a serial periphery
interface (SPITM) for changing attenuation states. This
product maintains high attenuation accuracy over frequency
and temperature. No external matching components are
needed for the DSA.
The TQP4M9083 is available in a standard lead-free
/green/RoHS-compliant 24-pin 4x4mm QFN package. The
TQP4M9071 and TQP4M9072 are also available from
TriQuint as a footprint and pin compatible 6-bit, 31.5dB DSA
with a parallel control interface and serial control interface
respectively.
Pin #
Symbol
2
CLK
3
SERIN
4
LE
6
RF IN
13
RF OUT
15
SEROUT
18
Vdd
5, 14
GND
Backside Paddle
Ground
All other pins are N/C
Ordering Information
Part No.
Description
TQP4M9083
7-Bit, 31.75 dB DSA
TQP4M9083-PCB
0.4-3.5GHz Evaluation Board
PCB includes USB control interface board, EVH.
Standard T/R size = 2500 pieces on a 13” reel.
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 2 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Specifications
Absolute Maximum Ratings
Parameter
Rating
Storage Temperature
-55 to 150 oC
Junction Temperature
150 oC
RF Input Power, 50Ω,T = 85ºC
+28 dBm
Vdd, Power Supply Voltage
+6.0 V
Digital Input Voltage
Vdd + 0.5V
Operation of this device outside the parameter ranges given
above may cause permanent damage.
Recommended Operating Conditions
Parameter
Min
yp
Max
Units
Vdd
4.75
5
5.25
V
T (case)
-40
85
oC
Electrical specifications are measured at specified test conditions.
Specifications are not guaranteed over all recommended operating
conditions.
Electrical Specifications
Test conditions: 25ºC, Vdd = +5V, 50 system
Parameter
Conditions
Min
Typical
Max
Units
Operational Frequency Range
400
3500
MHz
Insertion Loss
1.0 GHz
1.1
dB
2.0 GHz
1.5
dB
2.5 GHz
1.7
2.3
dB
3.0 GHz
2.0
dB
Return Loss
All States
17
dB
Accuracy Error
0.4-3.5 GHz, 0.25dB State
0.25 ±0.15
dB
0.4-3.0 GHz, 0.5dB – 31.75dB State
± (0.3 + 3% of Atten. Setting) Max
dB
3.0-3.5 GHz, 0.5dB – 31.75dB State
± (0.4 + 4% of Atten. Setting) Max
dB
Input IP3
Input = +15dBm / tone, All States
+55
dBm
Input P0.1dB
All States
+30
dBm
Time rise / fall
10% / 90% RF
90
ns
Time On , Time Off
50% CTL to 10% / 90% RF
118
ns
Supply Voltage, Vdd
+5
V
Supply Current, Idd
2.0
mA
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 3 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Serial Control Interface
The TQP4M9083 has a CMOS SPITM input compatible serial interface. The input is 3-wire: Clock (CLK), Latch Enable (LE)
and Serial Input (SERIN). At power up, the serial control interface resets device attenuation state to 31.75dB. The 7-bit
SERIN word is loaded into the register on rising edge of the CLK, MSB first. Serial Output ( SEROUT) is propagated on
rising clock egde through an internal 7-bit register. MSB, the first data to be loaded on SERIN, will appear on SEROUT after
the 7th rising clock edge cycle.
When LE is high, CLK is internally disabled.
SERIN (MSB in First 7-Bit Word) Control Logic Truth Table
7-Bit Control Word to DSA
MSB LSB
Attenuation
State
D6
D5
D4
D3
D2
D1
D0
1
1
1
1
1
1
1
Reference : IL
1
1
1
1
1
1
0
0.25 dB
1
1
1
1
1
0
1
0.5 dB
1
1
1
1
0
1
1
1 dB
1
1
1
0
1
1
1
2 dB
1
1
0
1
1
1
1
4 dB
1
0
1
1
1
1
1
8 dB
0
1
1
1
1
1
1
16 dB
0
0
0
0
0
0
0
31.75 dB
Any combination of the possible 128 states will provide an attenuation of approximately the sum
of bits selected
Serial Control Interface Timing Diagram
CLK is disabled when LE is high
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 4 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Serial Control Timing Characteristics
Test conditions: 25ºC, Vdd = +5V
Parameter
Condition
Min
Max
Units
Clock Frequency
50% Duty Cycle
10
MHz
LE Setup Time, tLESU
after last CLK rising edge
10
ns
LE Pulse Width, tLEPW
30
ns
SERIN set-up time, tSISU
before CLK rising edge
10
ns
SERIN hold-time, tSIH
after CLK rising edge
10
ns
LE Pulse Spacing tLE
LE to LE pulse spacing
730
ns
Serial Control DC Logic Characteristics
Test conditions: 25ºC, Vdd = +5V
Parameter
Condition
Min
Max
Units
Input Low Voltage, VIL
0
0.8
V
Input High Voltage, VIH
2.3
Vdd
V
Output High Voltage, VOHmin
On SEROUT
2.0
Vdd
V
Output Low Voltage, VOLmax
On SEROUT
0
0.8
V
Input Current, IIH / IIL
On SERIN, LE and CLK
-10
+10
µA
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 5 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Typical Performance Data
Performance plots data is measured using Bias Tee on RF ports.
-4
-3
-2
-1
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
Insertion Loss (dB)
Frequency (GHz)
Insertion Loss vs. Temperature
-40°C
+25°C
+85°C
-35
-30
-25
-20
-15
-10
-5
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
S21 (dB)
Frequency (GHz)
Attenuation vs. Frequency
0.25dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.75dB
Temp. = 25oC
-35
-30
-25
-20
-15
-10
-5
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
S11 (dB)
Frequency ( MHz)
Input Return Loss vs. Frequency
0dB
0.25dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.75dB
Temp. = 25oC
-35
-30
-25
-20
-15
-10
-5
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
S22 (dB)
Frequency ( MHz)
Output Return Loss vs. Frequency
0dB
0.25dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.75dB
Temp. = 25oC
45
50
55
60
65
0 5 10 15 20 25 30
Input IP3 (dBm)
Attenuation States
Input IP3
Frequency = 0.5 GHz
Power Level = 15dBm/tone
1 MHz Tone Spacing
Vdd = 5 V
-40°C
+25°C
+85°C
45
50
55
60
65
0 5 10 15 20 25 30
Input IP3 (dBm)
Attenuation States
Input IP3
Frequency = 2 GHz
Power Level = 15dBm/tone
1 MHz Tone Spacing
Vdd = 5 V
-40°C
+25°C
+85°C
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 6 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Typical Performance Data
-0.5
-0.3
-0.1
0.1
0.3
0.5
0 5 10 15 20 25 30
Attenuation Error
Attenuation States
Attenuation Error
0.9 GHz
1.8 GHz
2.2 GHz
2.7 GHz
Temp. = 25oC
-20
-10
0
10
20
30
40
50
60
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
Relative Phase ( Degree)
Frequency (GHz)
Relative Phase vs. Frequency
0dB
0.25dB
0.5dB
1dB
2dB
4dB
8dB
16dB
31.75dB
Temp. = 25oC
Detailed Device Description
The TQP4M9083 is a high linearity, low insertion loss, wideband, 7-bit, 31.75 dB digital step attenuator. The digital step
attenuator uses a single 5V supply and has a CMOS SPITM controller. This product maintains high attenuation accuracy over
frequency and temperature.
Further assistance may be requested from TriQuint Applications Engineering, sjcapplications.engineering@tqs.com.
Functional Schematic Diagram
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 7 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Pin Description
18 Vdd
17 NC
NC
16
15 SEROUT
14 GND
13 RF OUT
12
NC
11
10
9
8
7
6
RF IN
GND
LE
SERIN
CLK
NC
5
4
3
2
1
24
23
22
21
20
19
NC
NC
NC
NC
NC
NC
7-BIT
31.75
DSA
SERIAL
CONTROL
NC
NC
NC
NC
NC
Pin
Symbol
Description
2
CLK
Clock. This serial clock is used to clock in the serial data to the registers. The data is latched
on the CLK rising edge. This input is a high impedance CMOS input.
3
SERIN
Serial Input Data. The 7-bit serial data is loaded MSB first. This input is a high impedance
CMOS input.
4
LE
Latch Enable, When LE goes high, 7-bit data in the serial input register is transferred to the
attenuator. When LE is high, CLK is disabled
6
RF IN
RF Input, DC voltage present, blocking capacitor required. Can be used for Input or Output.
13
RF OUT
RF Output, DC voltage present, blocking capacitor required. Can be used for Input or Output.
15
SEROUT
Serial Output Data
18
Vdd
Supply Voltage. Bypass capacitor required close to the pin. Dropping resistor highly
recommended ensuring compatibility with different power supplies.
5, 14
GND
These pins must be connected to RF/DC ground
1, 7, 8, 9, 10, 11,12,
16, 17, 19, 20, 21, 22,
23, 24
N/C
These pins are not connected internally but can be grounded on the PCB
Backside Paddle
GND
Multiple vias should be employed for proper performance; see page 10 for suggested footprint
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 8 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Applications Information
PC Board Layout
Top RF layer is .020” Rogers-4003, єr = 3.45, 4 total layers
(0.062” thick) for mechanical rigidity. Metal layers are 1-oz
copper. Microstrip line details: width = .040”, spacing = .020”.
External DC blocking capacitors ( C1 and C3) are required on
RFin and RFout pins of the device. The supply voltage for the
DSA is supplied externally through pin Vdd. Frequency
bypassing for this pin is supplied by surface mount capacitor 0.1
uF (C4). This capacitor is placed close to the device pin in the
board layout. To ensure application circuit is compatible with
different standard power supplies, 15 (R4) dropping resistor is
highly recommended on Vdd supply line.
RF layout is critical for getting the best performance. RF trace
impedance needs to be 50 ohm. For measuring the actual device
performance on connectorized PC board, input losses due to RF
traces need to be subtracted from the data measured through
SMA connectors. The calibration microstrip line J6-J7 estimates
the PCB insertion loss for removal from the evaluation board
measured data. All data shown on the datasheet are de-
embedded up to the device input/output pins.
The PC board is designed to test using USB control interface
board, Evaluation Board Host (EVH). Each TQP4M9083
evaluation board is supplied with the EVH board, USB cable and
EVH graphical user interface (EVH GUI) to change attenuation
states. Manual for using EVH and Application note describing
the EVH are also available. Refer to TriQuint’s website for more
information
The pad pattern shown has been developed and tested for
optimized assembly at TriQuint Semiconductor. The PCB land
pattern has been developed to accommodate lead and package
tolerances. Since surface mount processes vary from company to
company, careful process development is recommended.
C7
C1 C3
C5
C4
U1
R1
J5
C8 C9
C14
C15
J4
Bill of Material: TQP4M9083-PCB
Reference Desg.
Value
Description
Manufacturer
Part Number
U1
High Linearity 7-Bit, 31.5dB, DSA
TriQuint
TQP4M9083
C1,C3,C8, C9
1000 pF
Cap, Chip, 0402, 50V, X7R, 10%
various
C4
0.1 uF
Cap, Chip, 0402, 50V, X7R, 10%
various
R1
15
Res, Chip, 0402, 1/16W, 5%
various
C10, C11, C12, C13
DNP
Do Not Place
various
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 9 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Applications Information
PC Board Schematic
1
2
3
4
5
6
NC
RF OUT
18
17
16
15
14
13
24
23
22
21
20
19
7
8
9
10
11
12
NC
NC
NC
NC
NC
GND
SEROUT
NC
NC
Vdd
NC
NC
NC
NC
NC
NC
NC
CLK
SERIN
LE
GND
RF IN
U1
C1
1000pF
50 Ohms
C5
0.2pF
RF
Input C7
0.2pF
RF
Output
C3
1000pF
50 Ohms
C4
0.1uF
Vdd
J5-1 Vdd
J5-2 GND
J5-3
J5-4
J5-5
J5-6
J5-7
J5-8
J5-9
J5-10
J5-11 SERIN
J5-12 CLK
J5-13 LE
J5-14
J5-15
J5-16
J5-17
J5-18
J5-19
J5-20 GND
Vdd
J1 J2
C5 not required for final
application circuit. Used on
PCB to resonate out the
RF connector parasitics.
C7 not required for final
application circuit. Used on
PCB to resonate out the
RF connector parasitics.
R4
15
Thru Calibration Line
C8
1000pF
50 Ohms
C14
0.2pF
RF
Input C15
0.2pF
RF
Output
C9
1000pF
50 Ohms
J6 J7
50 Ohms
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 10 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Mechanical Information
Package Information and Dimensions
This package is lead-free, RoHS-compliant, and green. The plating material on the pins is annealed matte tin over copper. It is compatible
with both lead-free (maximum 260 C reflow temperature) and leaded (maximum 245 C reflow temperature) soldering processes.
The component will be laser marked with “4M9083” product label with an alphanumeric lot code on the top surface of the package.
4.000
4.000
.85±.05
0.000-.050
0.203 Ref.
d.08 C
f.10 C
C
A
B
PIN #1 IDENTIFICATION
CHAMFER 0.300 X 45°
2.700±0.050
Exp.DAP
2.700±0.050
Exp.DAP
.500 Bsc
2.500
Ref.
.400±0.050
.25±0.050
R.075
Mounting Configuration
All dimensions are in millimeters (inches). Angles are in degrees.
.64 TYP
2.70
2.70
2.70
2.70
COMPONENT SIDE
BACK SIDE
.64 TYP
16X .38
.50 PITCH, TYP
FULL R.19
24X .70
4M9083
All dimensions are in millimeters (inches).
Angles are in degrees.
Notes:
1. Ground vias are critical for the proper RF
performance of this device. Vias should
use a .35mm (#80 / .0135”) diameter drill
and have a final plated thru diameter of
.25 mm (.010”).
2. Add as much copper as possible to inner
and outer layers near the part to ensure
optimal thermal performance.
TQP4M9083
High Linearity 7-Bit, 31.75dB Digital Step Attenuator
Data Sheet: Rev D 05-11-12
- 11 of 11 -
Disclaimer: Subject to change without notice
© 2012 TriQuint Semiconductor, Inc.
Connecting the Digital World to the Global Network®
Product Compliance Information
ESD Information
ESD Rating: Class 1C
Value: Passes 1000 V to < 2000 V
Test: Human Body Model (HBM)
Standard: JEDEC Standard JESD22-A114
ESD Rating: Class IV
Value: Passes 1000 V
Test: Charged Device Model (CDM)
Standard: JEDEC Standard JESD22-C101
Solderability
The plating material on the pins is annealed matte tin
over copper. It is compatible with both lead-free
(maximum 260 C reflow temperature) and leaded
(maximum 245 C reflow temperature) soldering
processes.
This part is compliant with EU 2002/95/EC RoHS
directive (Restrictions on the Use of Certain Hazardous
Substances in Electrical and Electronic Equipment).
This product also has the following attributes:
Lead Free
Halogen Free (Chlorine, Bromine)
Antimony Free
TBBP-A (C15H12Br402) Free
PFOS Free
SVHC Free
MSL Rating
MSL 1 at +260 °C convection reflow
The part is rated Moisture Sensitivity Level 1 at 260°C per JEDEC
standard IPC/JEDEC J-STD-020.
Contact Information
For the latest specifications, additional product information, worldwide sales and distribution locations, and information about
TriQuint:
Web: www.triquint.com Tel: +1.503.615.9000
Email: info-sales@tqs.com Fax: +1.503.615.8902
For technical questions and application information:
Email: sjcapplications.engineering@tqs.com
Important Notice
The information contained herein is believed to be reliable. TriQuint makes no warranties regarding the information contained
herein. TriQuint assumes no responsibility or liability whatsoever for any of the information contained herein. TriQuint
assumes no responsibility or liability whatsoever for the use of the information contained herein. The information contained
herein is provided "AS IS, WHERE IS" and with all faults, and the entire risk associated with such information is entirely with
the user. All information contained herein is subject to change without notice. Customers should obtain and verify the latest
relevant information before placing orders for TriQuint products. The information contained herein or any use of such
information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property
rights, whether with regard to such information itself or anything described by such information.
TriQuint products are not warranted or authorized for use as critical components in medical, life-saving, or life-sustaining
applications, or other applications where a failure would reasonably be expected to cause severe personal injury or death.