SIMPLIFIED SCHEMATIC
Figure 1. Functional Block Diagram
DATEL’s SHM-4860 is a high-speed, highly
accurate sample hold amplifi er designed for
precision, high-speed analog signal processing
applications. Manufactured using modern, high
quality hybrid technology, the SHM-4860 features
excellent dynamic specifi cations including a
maximum acquisition time of only 200ns for a 10V
step to ±0.01%. Sample-to-hold settling time, to
±0.01% accuracy, is 100ns maximum with an
aperture uncertainty of ±50ps.
The SHM-4860 is a complete sample-hold cir-
cuit, containing a precision MOS hold capacitor and
a MOSFET switching confi guration which results in
faster switching and better feedthrough attenu-
ation. Additionally, a FET-input amplifi er design
allows faster acquisition and settling times while
maintaining a considerably lower droop rate.
PRODUCT OVERVIEWFEATURES
200ns Maximum acquisition time
±0.01% Accuracy
100ns Maximum sample-hold settling time
74dB Feedthrough attenuation
±50ps Aperture uncertainty
Industry standard
+
10 15 21 23 INTERNAL
SUPPLY BYPASS
CAPACITORS
9 +5V SUPPLY
24 +15V SUPPL
Y
22 –15V SUPPLY
1 OUTPUT
C
H
1k
INPUT 13
HOLD COMMAND 11
HOLD COMMAND 12
SWITCH
DRIVER
SYSTEM GROUND
1k
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifi ers
®®
DATEL • 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
04 Apr 2011 MDA_SHM-4860.B03 Page 1 of 3
Functional Specifi cations
I ±15V Supply Voltages, Pins 24, 22 ±18V
+5V Supply Voltage, Pin 9 –0.5V to +7V
Analog Input, Pin 13 c ±18V
Digital Inputs, Pins 11, 12 –0.5V to +7V
Output Current d ±65mA
ABSOLUTE MAXIMUM RATINGS
(Typical at +25°C with ±15V and +5V supplies unless otherwise noted.)
ANALOG INPUT/OUTPUT
MIN. TYP. MAX. UNITS
Input/Output Voltage Range c±10.25 ±11.25 — V
Input Impedance — 1 — kΩ
Output Current d — — ±40 mA
Output Impedance 0.1 — Ω
Maximum Capacitive Load — 250 — pF
DIGITAL INPUT
Input Logic Level
Logic "1" +2.0 — +5.0 V
Logic "0" 0 — +0.8 V
Loading
Logic "1" — — +40 μA
Logic "0" — — –1.6 mA
TRANSFER CHARACTERISTICS
Gain — –1 — V/V
Gain Accuracy — ±0.05 ±0.1 %
Gain Linearity Error e— ±0.005 ±0.01 %FS
Sample-Mode Offset Voltage — ±0.5 ±5 mV
Sample-to-Hold Offset Error f
(Pedestal)
— ±2.5 ±20 mV
Gain Tempco (Drift) — ±0.5 ±5 ppm/°C
Sample-Mode Offset Drift — ±3 ±15 g
Sample-to-Hold Offset Drift — ±4 — g
DYNAMIC CHARACTERISTICS
Acquisition Time
10V to ±0.01%FS — 160 200 ns
10V to ±0.1%FS — 100 170 ns
10V to ±1%FS — 90 — ns
1V to ±1%FS — 75 — ns
Sample-to-Hold Settling Time
10V to ±0.01%FS — 60 100 ns
10V to ±0.1%FS — 40 — ns
Sample-to-Hold Transient — 180 — mV p-p
DYNAMIC CHARACTERISTICS , Continued
Aperture Delay Time — 6 — ns
Aperture Uncertainty (Jitter) — ±50 — ps
Output Slew Rate — ±300 — μV/μs
Output Slew Rate — ±300 — μV/μs
Small Signal Bandwidth (–3dB) — 16 — MHz
Droop: +25°C — ±0.5 ±5 μV/μs
+70°C — ±15 — μV/μs
+125°C — ±1.2 — mV/μs
Feedthrough Attenuation — 74 — dB
Overload Recovery Time
Positive — 200 — ns
Negative — 700 — ns
POWER REQUIREMENTS
Voltage Range: ±15V Supplies — ±3 — %
+5V Supply — ±5 — %
Power Supply Rejection Ratio — ±0.5 — mV/V
Quiescent Current Drain
+15V Supply — +21 +25 mA
–15V Supply — –22 –25 mA
+5V Supply — +17 +25 mA
Power Consumption — 730 875 mW
PHYSICAL/ENVIRONMENTAL
Operating Temperature Ranges
SHM-4860MC 0 to +70°C (ambient)
SHM-4860MM, 883 –55 to +125°C (case)
Storage Temperature Range –65 to +150°C
Package Type 24-pin ceramic DDIP
Output
Footnotes:
c Input signal should not exceed the supply voltage.
d The SHM-4860’s output is current limited at approximately ±65mA. The device can withstand a sus-
tained short to ground. However, shorts from the output to either supply will cause permanent damage.
For normal operation, the load current should not exceed ±40mA.
e Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V.
f Sample-to-Hold Offset Error (Pedestal) is constant regardless of input/output level.
g Units are ppm of FSR/°C.
TECHNICAL NOTES
1. All ground pins (10, 15, 21, 23) should be tied together and connected to system analog ground
as close to the package as possible. It is recommended to use a ground plane under the device and
solder all four ground pins directly to it. Care must be taken to ensure that no ground potentials
can exist between Pin 10 and the other ground pins.
2. Although the power supply pins (9, 22, 24) are internally bypassed to ground with 0.01μF ceramic
capacitors, additional external 0.1μF to 1μF tantalum bypass capacitors may be required in critical
applications.
3. A logic "0" on the HOLD COMMAND input (Pin 11), or a logic "1" on the HOLD COMMAND input
(Pin 12), will put the device in the sample mode. In this mode, the device acts as an inverting unity-gain
amplifi er, and its output will track its input. A logic "1" on Pin 11 (logic "0" on Pin 12) will put the device
in the hold mode, and the output will be held constant at the last input level present when the hold
command was given. If the HOLD COMMAND input (Pin 11) is used to control the device, Pin 12 must
be tied to digital ground. If HOLD COMMAND input (Pin 12) is used to control the device, Pin
11 must be tied to +5V.
4. The maximum capacitive load to avoid oscillation is typically 250pF. Recommended resistive load is
500:, although values as low as 250: may be used. Acquisition and sample-to-hold settling times are
relatively unaffected by resistive loads down to 250: and capacitive loads up to 50pF. However, higher
capacitances will affect both acquisition and settling time.
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifi ers
®®
DATEL • 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com • e-mail: help@datel.com
04 Apr 2011 MDA_SHM-4860.B03 Page 2 of 3
ORDERING GUIDE SUMMARY
Model Number Operating Temperature Range
SHM-4860MC 0 to +70°C
SHM-4860MM –55 to +125°C
SHM-4860/883 –55 to +125°C
MECHANICAL SPECIFICATIONS
INPUT/OUTPUT CONNECTIONS
PIN FUNCTION PIN FUNCTION
1 OUTPUT 24 +15V SUPPLY
2 N.C. 23 GROUND
3 N.C. 22 –15V SUPPLY
4 N.C. 21 GROUND
5 N.C. 20 N.C.
6 N.C. 19 N.C.
7 N.C. 18 N.C.
8 N.C. 17 N.C.
9 +5V SUPPLY 16 N.C.
10 GROUND 15 GROUND
11 HOLD COMMAND 14 N.C.
12 HOLD COMMAND 13 INPUT
Dimensions in inches (mm)
0.200 MAX.
(5.080)
0.235 MAX.
(5.969)
0.600 ±0.010
(15.240)
0.80 MAX.
(20.32)
0.100 TYP.
(2.540)
0.100
(2.540)
0.018 ±0.002
(0.457)
0.100
(2.540)
0.040
(1.016)
1.31 MAX.
(33.27)
112
13
24
1.100
(27.940)
0.190 MAX.
(4.826)
0.010
(0.254)
+0.002
–0.001
SEATING
PLANE
0.025
(
0.635
)
(unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
Kovar alloy
50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
24-PIN DDIP
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifi ers
. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not
imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change
without notice.
www.datel.com • e-mail: help@datel.com
®®
DATEL
11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA
ITAR and ISO 9001/14001 REGISTERED
04 Apr 2011 MDA_SHM-4860.B03 Page 3 of 3
