General Description

The MAX5168 contains 32 sample/hold amplifiers and

four 1-of-8 multiplexers. The logic controlling the muxes

and sample/hold amplifiers combines the four muxes into

a unified 1-of-32 multiplexer with a sample/hold at each

output. Additional logic allows two devices to function as

a single 64-channel unit. The MAX5168 is available with

an output impedance of 50

Ω, 500Ω, or 1kΩ.

The MAX5168 operates with +10V and -5V supplies, and

a separate +5V digital logic supply. Manufactured with a

proprietary BiCMOS process, it provides high accuracy,

fast acquisition time, a low droop rate, and a low hold

step. The MAX5168 has a typical linearity error of less

than 0.01% and can accurately acquire 8V step input sig-

nals to 0.01% accuracy in 2.5µs within the +7V to -4V

input signal range. Transitions from sample mode to hold

mode result in only a 0.5mV error. While in hold mode, the

output voltage slowly droops at a rate of 1mV/s.

The MAX5168 is available in a 48-pin TQFP package and

is specified for both the commercial (0°C to +70°C) and

extended industrial (-40°C to +85°C) temperature ranges.

________________________Applications

Automatic Test Systems (ATE)

Industrial Process Controls

Arbitrary Function Generators

Avionics Equipment

Features

o 32-Channel Sample/Hold

o 0.01% Accuracy of Acquired Signal

o 0.01% Linearity Error

o Fast Acquisition Time: 2.5µs

o Low Droop Rate: 1mV/s

o Low Hold Step: 0.25mV

o Wide Output Voltage Range: +7V to -4V

32-Channel Sample/Hold Amplifier

with a Single Multiplexed Input

________________________________________________________________ Maxim Integrated Products

1

OUT21

OUT20

OUT19

OUT18

OUT17

OUT16

OUT15

OUT14

OUT13

OUT12

OUT11

ADDR2

ADDR3

ADDR4

SELECT

S/H

CONFIG

DGND

AGND

IN

N.C.

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

TQFP

MAX5168

TOP VIEW

Pin Configuration

19-1674; Rev 0; 4/00

Ordering Information

48 TQFP

PIN-

PACKAGE

TEMP. RANGE

0°C to +70°C

MAX5168LCCM

PART

48 TQFP

0°C to +70°C

MAX5168MCCM

48 TQFP

0°C to +70°C

MAX5168NCCM

48 TQFP

-40°C to +85°C

MAX5168LECM

48 TQFP

-40°C to +85°C

MAX5168MECM

48 TQFP

-40°C to +85°C

MAX5168NECM

50

(

Ω)

500

1k

50

500

1k

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.