19-1469; Rev 0; 7/99
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
General Description
The MAX5165 contains four 1-to-8 multiplexers and 32
sample/hold amplifiers. A single analog input connects
to all four internal 1-to-8 multiplexers. The sample/hold
amplifiers are organized into four octal sample/holds
with independent TTL/CMOS-compatible track/hold
enables for each octal set. Additional 3-bit TTL/CMOS-
compatible address logic selects the 1-to-8 multiplexer
channel. Clamping diodes on each output allow clamp-
ing between two external reference voltages. The
MAX5165 is available with an output impedance of
50Ω, 500Ω, or 1kΩ, allowing output filtering.
The MAX5165 operates with +10V and -5V supplies and
a separate +5V digital logic supply. Manufactured with
a proprietary BiCMOS process, it provides high accura-
cy, fast acquisition time, low droop rate, and a low hold
step. The device acquires 8V step input signals to
0.01% accuracy in 2.5µs. 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/sec. The MAX5165 is available in a 48-pin TQFP
package.
o
32-Channel Sample/Hold
o
Output Clamping
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
MAX5165
Ordering Information
PART
MAX5165LCCM
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 Equipment (ATE)
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
MAX5165MCCM 0°C to +70°C
MAX5165NCCM 0°C to +70°C
MAX5165LECM -40°C to +85°C
MAX5165MECM -40°C to +85°C
MAX5165NECM -40°C to +85°C
Pin Configuration
A1
A0
OUT31
OUT30
OUT29
OUT28
OUT27
OUT26
OUT25
44
43
42
41
40
48
47
46
45
39
38
37
OUT24
OUT23
OUT22
A2
M0
M1
M2
M3
V
L
DGND
V
SS
AGND
IN
CH
CL
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
OUT21
OUT20
OUT19
OUT18
OUT17
OUT16
V
DD
OUT15
OUT14
OUT13
OUT12
OUT11
MAX5165
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.
OUT10
N.C.
OUT0
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
OUT9
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
MAX5165
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
VL to DGND...........................................................-0.3V to +6.0V
VL 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
CH, CL to AGND .................................................-6.0V to +11.0V
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).........1000mW
Operating Temperature Ranges
MAX5165_CCM ...................................................0°C to +70°C
MAX5165_ECM.................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Maximum Current into CH, CL, PIN..................................±80mA
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
∆V
OUT_
V
OS
V
OUT_
-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
MAX5165L
DC Output Impedance
Output Source Current
Output Sink Current
Output Clamp High
Output Clamp Low
TIMING PERFORMANCE
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
2
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
2.5
1
1
2
200
4
µs
µs
ns
ns
ns
ns
R
OUT_
I
SOURCE
I
SINK
V
CH
V
CL
R
L
=
∞,
C
L
= 250pF
MAX5165M
MAX5165N
35
350
700
2
2
V
SS
V
SS
V
DD
V
DD
MAX5165L, C
L
= 250pF
MAX5165M, C
L
= 10nF
MAX5165N, C
L
= 10nF
V
SS
+
0.75
-72
-72
-72
-76
-76
-76
10
50
500
1000
20
65
650
1300
mA
mA
V
V
Ω
pF
dB
-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
Analog Crosstalk
Input Capacitance
_______________________________________________________________________________________
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
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
Digital Logic Supply Current
Digital Logic Supply Current
Power-Supply Rejection Ratio
V
DD
V
SS
V
L
I
DD
I
SS
I
L
I
L
PSRR
R
L
=
∞
R
L
=
∞
A0–A3 = DGND or V
L
;
M0, M1, M2 = DGND or V
CC
A0–A3 = 0.8V or 2V;
M0, M1, 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
-5.0
5
10.5
-5.45
5.25
36
36
0.5
5
V
V
V
mA
mA
mA
mA
dB
V
IH
V
IL
I
I
A_ = DGND or V
L
, M_ = DGND or V
L
-1
2.0
0.8
+1
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5165
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 a Single Multiplexed Input
MAX5165
Typical Operating Characteristics
(V
DD
= +10V, V
SS
= -5V, V
L
= +5V, IN = GND, R
L
=
∞,
C
L
= 0, AGND = DGND, V
CH
= V
DD
, V
CL
= V
SS
, T
A
= +25°C, unless other-
wise noted.)
POWER-SUPPLY REJECTION RATIO
(HOLD MODE)
MAX5165-06
DROOP RATE vs. TEMPERATURE
MAX5165-01
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)
1k
10k
TEMPERATURE (°C)
POWER-SUPPLY REJECTION RATIO
(SAMPLE MODE)
MAX5165-03
HOLD STEP vs. TEMPERATURE
MAX5165-04
HOLD STEP vs. INPUT VOLTAGE
90
80
MAX5165-07
-90
-80
-70
75
100
HOLD STEP (µV)
HOLD STEP (µV)
-60
PSRR (dB)
-50
-40
-30
-20
-10
0
1
10
100
FREQUENCY (kHz)
-SUPPLY
+SUPPLY
50
70
60
50
40
30
20
10
25
0
1k
10k
-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
INPUT VOLTAGE (V)
OFFSET VOLTAGE vs. TEMPERATURE
MAX5165-05
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
MAX5165-08
-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
TEMPERATURE (°C)
INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
MAX5165-02
18
32-Channel Sample/Hold Amplifier
with a Single Multiplexed Input
MAX5165
M2
M1
M3
M0
A2
A1
A0
CH
CL
D0
D0
D31
AND7
OUTPUT CLAMPING
EN
OUT0
D31
MAX5165
3-TO-8
DECODER
8
8
1-TO-8 MULTIPLEXER
AND0
IN
SAMPLE-AND-HOLD
8
1-TO-8 MULTIPLEXER
OUT7
OUT8
EN
IN
SAMPLE-AND-HOLD
IN
8
1-TO-8 MULTIPLEXER
OUT16
EN
IN
SAMPLE-AND-HOLD
8
1-TO-8 MULTIPLEXER
OUT24
EN
IN
SAMPLE-AND-HOLD
DGND
AGND
V
CC
V
DD
V
L
OUT31
OUT23
OUT15
Figure 1. Functional Diagram
_______________________________________________________________________________________
5
DSP 与 ARM 处理器
