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INNOVATION and EX C ELL E N C E
S HM-14
Ultra-Fast, 14-Bit Linear
Monolithic Sample-Hold Amplifiers
Figure 1. SHM-14 Functional Block Diagram
1, 5, 8
ANALOG
OUTPUT
3
15
ANALOG INPUT
9
SAMPLE/HOLD
SWITCH
DRIVE
16
13
10, 11, 14
12
GROUND
EXTERNAL HOLD
CAPACITOR
–5V SUPPLY
+5V SUPPLY
+1
+1
SAMPLE/HOLD
C
H
15pF
2, 4, 6, 7
DO NOT CONNECT
Note: SOIC Package Pinouts Shown
FEATURES
Fast acquisition time:
10ns to ±0.1%
20ns to ±0.024%
25ns to ±0.012%
±0.0012% Nonlinearity
65μV rms output noise
250MHz small signal bandwidth
70MHz full power bandwidth
–80dB feedthrough
1ps Aperture jitter
250mW power dissipation
Low cost
GENERAL DESCRIPTION
The SHM-14 is an extremely high-speed and accurate
monolithic sample-and-hold amplifier designed for fast data
acquisition applications. The SHM-14 is accurate (±0.5 LSB to
14-bits over the full military temperature range) and is very fast
(10ns and 20ns acquisition times to accuracies of 10 and 12
bits respectively). With this high performance and a full power
bandwidth of 70MHz, the SHM-14 is an ideal device for driving
flash and high-resolution subranging A/D converters.
A careful design optimizes the device for accuracy and speed
over the full military temperature range. The droop rate is a low
±2mV/μs and can be further reduced by adding an optional
external hold capacitor. The 30mA output current and
guaranteed specifications for a 100
load provide high drive
capability. Operating from ± 5V supplies, the SHM-14
consumes only 250mW of power.
The SHM-14 is built using a fast complementary bipolar
process. The device is available in both military and industrial
temperature ranges. The SHM-14 is packaged in a 16-pin
plastic SOIC or in a 20-pin ceramic LCC.
1
2
3
4
5
6
7
8
9
NOT CONNECTED
–5V SUPPLY
NOT CONNECTED
ANALOG INPUT
NOT CONNECTED
DO NOT CONNECT
–5V SUPPLY
DO NOT CONNECT
DO NOT CONNECT
–5V SUPPLY
10
20
19
18
17
16
15
14
13
12
11
NOT CONNECTED
SAMPLE/HOLD
SAMPLE/HOLD
+5V SUPPLY
NOT CONNECTED
EXT. CAPACITOR
GROUND
+5V SUPPLY
+5V SUPPLY
ANALOG OUTPUT
PIN
FUNCTION
PIN
FUNCTION
INPUT/OUTPUT CONNECTIONS — CLCC
16
15
14
13
12
11
10
9
SAMPLE/HOLD
SAMPLE/HOLD
+5V SUPPLY
EXT. CAPACITOR
GROUND
+5V SUPPLY
+5V SUPPLY
ANALOG OUTPUT
1
2
3
4
5
6
7
8
–5V SUPPLY
DO NOT CONNECT
ANALOG INPUT
DO NOT CONNECT
–5V SUPPLY
DO NOT CONNECT
DO NOT CONNECT
–5V SUPPLY
PIN
FUNCTION
PIN
FUNCTION
INPUT/OUTPUT CONNECTIONS — SOIC
DATEL, Inc., 11 Cabot Boulevard, Mansfield, MA 02048-1151 (U.S.A.)
Tel: (508) 339-3000 Fax: (508) 339-6356
For immediate assistance (800) 233-2765