IN N O VA T IO N a n d E X C ELL E N C E

®

®

SHM-12

Ultra-Fast, 12-Bit Linear

Monolithic Sample-Hold Amplifiers

FEATURES

• Fast acquisition time:

10ns to ±0.1%

15ns to ±0.024%

20ns to ±0.012%

• ±0.006% Nonlinearity

• 65µVrms output noise

• 120MHz small signal bandwidth

• 55MHz full power bandwidth

• –80dB feedthrough

• 1ps Aperture jitter

• 250mW power dissipation

• Low cost

Figure 1. SHM-12 Functional Block Diagram

1, 2, 5, 7, 9, 10

ANALOG

OUTPUT

4

18

ANALOG INPUT

11

SAMPLE/HOLD

SWITCH

DRIVE

19

15

12, 13, 17, 20

14, 16

GROUND

EXTERNAL HOLD

CAPACITOR

–5V SUPPLY

+5V SUPPLY

3

6, 8

NOT CONNECTED

DO NOT

CONNECT

+1

+1

SAMPLE/HOLD

15pF

GENERAL DESCRIPTION

The SHM-12 is an extremely high-speed and accurate

monolithic sample-and-hold amplifier designed for fast data

acquisition applications. The SHM-12 is accurate (±1LSB at 12

bits over the full military temperature range) and is very fast

(10ns and 15ns acquisition times to accuracies of 10 and 12-

bits, respectively). With this high performance and a full power

bandwidth of 55MHz, the SHM-12 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

±0.5mV/µs. The 30mA output current and guaranteed

specifications for a 100

Ω load provide high drive capability.

Operating from ±5V supplies, the SHM-12 consumes only

250mW of power.

The SHM-12 is built using a fast complementary bipolar

process. The device is available in both military and industrial

temperature ranges. The SHM-12 is packaged in a 20-pin

plastic SOIC or ceramic LCC.

1

–5V SUPPLY

2

–5V SUPPLY

3

NOT CONNECTED

4

ANALOG INPUT

5

–5V SUPPLY

6

DO NOT CONNECT

7

–5V SUPPLY

8

DO NOT CONNECT

9

–5V SUPPLY

10

–5V SUPPLY

PIN

FUNCTION

20

+5V SUPPLY

19

SAMPLE/HOLD

18

SAMPLE/HOLD

17

+5V SUPPLY

16

GROUND

15

EXT. CAPACITOR

14

GROUND

13

+5V SUPPLY

12

+5V SUPPLY

11

ANALOG OUTPUT

PIN

FUNCTION

INPUT/OUTPUT CONNECTIONS

(CLCC and SOIC-20 Packages)

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