19-1674; Rev 0; 4/00
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
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鈩? 500鈩? or 1k鈩?
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 2.5碌s 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擄C to +70擄C) and
extended industrial (-40擄C to +85擄C) temperature ranges.
o
32-Channel Sample/Hold
o
0.01% Accuracy of Acquired Signal
o
0.01% Linearity Error
o
Fast Acquisition Time: 2.5碌s
o
Low Droop Rate: 1mV/s
o
Low Hold Step: 0.25mV
o
Wide Output Voltage Range: +7V to -4V
Features
MAX5168
Ordering Information
PART
MAX5168LCCM
MAX5168MCCM
MAX5168NCCM
MAX5168LECM
MAX5168MECM
MAX5168NECM
TEMP. RANGE
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
-40擄C to +85擄C
-40擄C to +85擄C
-40擄C to +85擄C
PIN-
PACKAGE
48 TQFP
48 TQFP
48 TQFP
48 TQFP
48 TQFP
48 TQFP
R
OUT
(鈩?
50
500
1k
50
500
1k
________________________Applications
Automatic Test Systems (ATE)
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
ADDR2
ADDR3
ADDR4
SELECT
S/H
CONFIG
V
L
DGND
V
SS
AGND
IN
N.C.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Pin Configuration
TOP VIEW
ADDR1
ADDR0
48
47
46
45
44
43
42
41
40
39
38
37
OUT31
OUT30
OUT29
OUT28
OUT27
OUT26
OUT25
OUT24
OUT23
OUT22
36
35
34
33
32
31
30
29
28
27
26
25
18
19
20
21
22
23
24
OUT21
OUT20
OUT19
OUT18
OUT17
OUT16
V
DD
OUT15
OUT14
OUT13
OUT12
OUT11
MAX5168
________________________________________________________________
Maxim Integrated Products
N.C.
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
OUT10
TQFP
1
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.