19-1456; Rev 0; 8/99
32-Channel Sample/Hold Amplifier
with Four Multiplexed Inputs
General Description
The MAX5166 contains four 1-to-8 multiplexers and 32
sample/hold amplifiers. The sample/hold amplifiers are
organized into four octal sample/holds with separate
inputs and independent TTL/CMOS-compatible hold
enables for each octal set. Additional 3-bit TTL/CMOS-
compatible address logic selects the 1-to-8 multiplexer
channel. The MAX5166 is available with an output imped-
ance of 50Ω, 500Ω, or 1kΩ, allowing output filtering.
The MAX5166 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, low droop rate, and a
low hold step. The device acquires 8V step input sig-
nals to 0.01% accuracy in 2.5µs. Transitions from sam-
ple mode to hold mode result in only 0.5mV of error.
While in hold mode, the output voltage slowly droops at
a rate of 1mV/sec. The MAX5166 is available in a 48-pin
TQFP package.
o
Quad, 8-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/sec
o
Low Hold Step: 0.25mV
o
Wide Output Voltage Range: +7V to -4V
Features
MAX5166
Ordering Information
PART
MAX5166LCCM
TEMP. RANGE
0°C to +70°C
PIN-
PACKAGE
48 TQFP
48 TQFP
48 TQFP
48 TQFP
48 TQFP
48 TQFP
R
OUT
(Ω)
50
500
1k
50
500
1k
Applications
Automatic Test Systems (ATE)
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
MAX5166MCCM 0°C to +70°C
MAX5166NCCM 0°C to +70°C
MAX5166LECM -40°C to +85°C
MAX5166MECM -40°C to +85°C
MAX5166NECM -40°C to +85°C
Pin Configuration
OUT31
OUT30
OUT29
OUT28
OUT27
OUT26
OUT25
OUT24
43
42
41
40
39
48
47
46
45
44
38
37
OUT23
OUT22
TOP VIEW
A1
A0
A2
M0
M1
M2
M3
V
L
DGND
V
SS
AGND
IN3
IN2
IN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
36
35
34
33
32
31
30
29
28
27
26
25
MAX5166
OUT21
OUT20
OUT19
OUT18
OUT17
OUT16
V
DD
OUT15
OUT14
OUT13
OUT12
OUT11
TQFP
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
OUT9
OUT10
IN0
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
32-Channel Sample/Hold Amplifier
with Four Multiplexed Inputs
MAX5166
ABSOLUTE MAXIMUM RATINGS
V
DD
to AGND.......................................................-0.3V to +11.0V
V
SS
to AGND .........................................................-6.0V to +0.3V
V
DD
to V
SS
......................................................................+15.75V
V
L
to DGND ...........................................................-0.3V to +6.0V
V
L
to AGND ...........................................................-0.3V to +6.0V
DGND to AGND.....................................................-0.3V to +2.0V
IN_ to AGND ...............................................................V
SS
to V
DD
A_, M_ to DGND ....................................................-0.3V to +6.0V
Maximum Current into Output Pin ....................................±10mA
Maximum Current into A_, M_ ..........................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
48-Pin TQFP (derate 12.5mW/°C above +70°C)..................1W
Operating Temperature Ranges
MAX5166_CCM ...................................................0°C to +70°C
MAX5166_ECM.................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
DD
= +10V, V
SS
= -5V, V
L
= +5V ±5%, AGND = DGND, R
L
= 5kΩ, C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
ANALOG SECTION
Linearity Error
Hold Step
Droop Rate
Offset Voltage
Output Voltage Range
V
HS
-4V < V
IN
< +7V, R
L
=
∞
IN_ = AGND
IN_ = AGND, T
A
= +25°C
IN_ = AGND, T
A
= +25°C
+15°C
≤
T
A
≤
+65°C (Note 1)
R
L
=
∞
8V step with
500ns rising edge
(Note 1)
C
IN_
R
OUT_
I
SOURCE
I
SINK
8V step to 0.08%, R
L
=
∞,
Figure 2 (Note 2)
Acquisition Time
Hold-Mode Settling Time
Aperture Delay
Inhibit Pulse Width
Data Hold Time
Data Setup Time
t
AQ
t
H
t
AP
t
PW
t
DH
t
DS
T
A
= +25°C, 100mV step to ±1mV, R
L
=
∞,
Figure 2 (Note 2)
To ±1mV of final value, Figure 2 (Note 1)
Figure 2 (Note 1)
Figure 2 (Note 1)
Figure 2 (Note 1)
Figure 2 (Note 1)
200
150
50
(Note 1)
R
L
=
∞,
C
L
= 250pF
MAX5166L
MAX5166M
MAX5166N
35
350
700
2
2
2.5
1
1
2
200
4
µs
µs
ns
ns
ns
ns
MAX5165L, C
L
= 250pF
MAX5165M, C
L
= 10nF
MAX5165N, C
L
= 10nF
5
50
500
1000
20
65
650
1300
mA
mA
Ω
pF
-72
-76
dB
V
SS
+
0.75
-30
0.01
0.25
1
-5
20
0.08
1.00
40
+30
40
V
DD
-
2.4
%
mV
mV/sec
mV
µV/°C
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
∆
V
OUT
V
OS
V
OUT_
Analog Crosstalk
Input Capacitance
DC Output Impedance
Output Source Current
Output Sink Current
TIMING PERFORMANCE
2
_______________________________________________________________________________________
32-Channel Sample/Hold Amplifier
with Four Multiplexed Inputs
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +10V, V
SS
= -5V, V
L
= +5V ±5%, AGND = DGND, R
L
= 5kΩ, C
L
= 50pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
PARAMETER
DIGITAL INPUTS
Input Voltage High
Input Voltage Low
Input Current
POWER SUPPLIES
Positive Analog Supply Voltage
Negative Analog Supply Voltage
Digital Logic Supply Voltage
Positive Analog Supply Current
Negative Analog Supply Current
V
DD
V
SS
V
L
I
DD
I
SS
R
L
=
∞
R
L
=
∞
A_ = DGND or V
L
;
M_ = DGND or V
L
V
A0
–V
A3
= 0.8V or 2V;
V
M0
, V
M1
, V
M2
= 0.8V or 2V
For both V
DD
and V
SS
in
sample mode, V
IN
= 0
-60
-75
(Note 3)
(Note 3)
9.5
-4.75
4.75
10.0
-5.0
5.0
10.5
-5.45
5.25
36
36
0.5
5
dB
V
V
V
mA
mA
mA
mA
V
IH
V
IL
I
I
A_ = DGND or V
L;
M_ = DGND or VL
-1
2.0
0.8
+1
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5166
Digital Logic Supply Current
I
L
Power-Supply Rejection Ratio
PSRR
Note 1:
Guaranteed by design.
Note 2:
Only one M_ input may be asserted low at a time, so only one channel is selected (see
Single vs. Simultaneous Sampling).
Note 3:
Do not exceed the absolute maximum rating for V
DD
to V
SS
of +15.75V (see
Absolute Maximum Ratings).
_______________________________________________________________________________________
3
32-Channel Sample/Hold Amplifier
with Four Multiplexed Inputs
MAX5166
Typical Operating Characteristics
(V
DD
= +10V, V
SS
= -5V, V
L
= +5V, IN
_
= +5V, R
L
=
∞,
C
L
= 0, AGND = DGND, T
A
= +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
(HOLD MODE)
MAX5166-06
DROOP RATE vs. TEMPERATURE
MAX5166-01
DROOP RATE vs. INPUT VOLTAGE
1.50
1.45
1.40
DROOP RATE (mV/sec)
1.35
PSRR (dB)
1.30
1.25
1.20
1.15
1.10
1.05
1.00
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-5.0 -3.5 -2.0 -0.5 1.0 2.5 4.0 5.5 7.0 8.5 10.0
INPUT VOLTAGE (V)
1
16
14
DROOP RATE (mV/sec)
12
10
8
6
4
2
0
-40
-20
0
20
40
60
80
-SUPPLY
+SUPPLY
100
10
100
FREQUENCY (kHz)
1000
10,000
TEMPERATURE (°C)
POWER-SUPPLY REJECTION RATIO
(SAMPLE MODE)
MAX5166-03
HOLD STEP vs. TEMPERATURE
MAX5166-04
HOLD STEP vs. INPUT VOLTAGE
-90
-80
MAX5166-07
-90
-80
-70
75
-100
HOLD STEP (µV)
-60
PSRR (dB)
-50
-40
-30
-20
-10
0
1
10
100
FREQUENCY (kHz)
-SUPPLY
HOLD STEP (µV)
+SUPPLY
50
-70
-60
-50
-40
-30
-20
-10
25
0
1000
10,000
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
0
-5.0
-3.0
-1.0
1.0
3.0
5.0
7.0
9.0
INPUT VOLTAGE (V)
OFFSET VOLTAGE vs. TEMPERATURE
MAX5166-05
OFFSET VOLTAGE vs. INPUT VOLTAGE
-3.6
-3.7
OFFSET VOLTAGE (mV)
-3.8
-3.9
-4.0
-4.1
-4.2
-4.3
-4.4
MAX5166-08
-2.0
-2.5
OFFSET VOLTAGE (mV)
-3.0
-3.5
-4.0
-4.5
-5.0
-40
-20
0
20
40
60
80
-3.5
-4.5
100
-5.0
-3.0
-1.0
1.0
3.0
5.0
7.0
9.0
TEMPERATURE (°C)
INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
MAX5166-02
18
32-Channel Sample/Hold Amplifier
with Four Multiplexed Inputs
MAX5166
M3 M2 M1 M0
A2 A1 A0
MAX5166
1-TO-8 MULTIPLEXER
AND0
3-TO-8
DECODER
8
8
AND7
EN
OUT0
IN0
IN
SAMPLE-AND-HOLD
8
1-TO-8 MULTIPLEXER
OUT8
EN
IN1
IN
SAMPLE-AND-HOLD
8
1-TO-8 MULTIPLEXER
OUT16
EN
IN2
IN
SAMPLE-AND-HOLD
8
1-TO-8 MULTIPLEXER
OUT24
EN
IN3
IN
SAMPLE-AND-HOLD
V
SS
V
DD
AGND
V
L
DGND
OUT31
OUT23
OUT15
OUT7
Figure 1. Functional Diagram
_______________________________________________________________________________________
_______________________________________________________________________________________
5
Microcontroller MCU
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