SMP08 Analog Devices, Inc., SMP08 Datasheet

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SMP08

Manufacturer Part Number
SMP08
Description
Octal Sample-and-hold With Multiplexed Input
Manufacturer
Analog Devices, Inc.
Datasheet

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a
REV. D
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The SMP08 is a monolithic octal sample-and-hold; it has eight
internal buffer amplifiers, input multiplexer, and internal hold
capacitors. It is manufactured in an advanced oxide isolated
CMOS technology to obtain high accuracy, low droop rate, and
fast acquisition time. The SMP08 has a typical linearity error of
only 0.01% and can accurately acquire a 10-bit input signal to
swing includes the negative supply in both single and dual sup-
ply operation.
The SMP08 was specifically designed for systems that use a
calibration cycle to adjust a multiple of system parameters. The
low cost and high level of integration make the SMP08 ideal for
calibration requirements that have previously required an
ASIC, or high cost multiple D/A converters.
*Protected by U.S. Patent No. 4,739,281.
1/2 LSB in less than 7 microseconds. The SMP08’s output
FEATURES
Internal Hold Capacitors
Low Droop Rate
TTL/CMOS Compatible Logic Inputs
Single or Dual Supply Operation
Break-Before-Make Channel Addressing
Compatible With CD4051 Pinout
Low Cost
APPLICATIONS
Multiple Path Timing Deskew for ATE
Memory Programmers
Mass Flow/Process Control Systems
Multichannel Data Acquisition Systems
Robotics and Control Systems
Medical and Analytical Instrumentation
Event Analysis
Stage Lighting Control
The SMP08 is also ideally suited for a wide variety of sample-
and-hold applications including amplifier offset or VCA gain
adjustments. One or more SMP08s can be used with single or
multiple DACs to provide multiple set points within a system.
The SMP08 offers significant cost and size reduction over dis-
crete designs. It is available in a 16-pin plastic DIP, or surface-
mount SOIC package.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
HOLD CAPS
(INTERNAL)
SMP08
INPUT
3
FUNCTIONAL BLOCK DIAGRAM
SW
(LSB)
11
Octal Sample-and-Hold
A
SW
with Multiplexed Input
1 OF 8 DECODER
SW
10
B
SW
World Wide Web Site: http://www.analog.com
(MSB)
SW
C
9
SW
SW
INH
6
SW
© Analog Devices, Inc., 1996
SMP08*
16
13
14
15
12
8
1
5
2
4
7
DGND
V
CH
CH
CH
CH
CH
CH
CH
CH
V
DD
SS
0
1
2
3
4
5
6
7
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT

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SMP08 Summary of contents

Page 1

... SW HOLD CAPS (INTERNAL) SMP08 The SMP08 is also ideally suited for a wide variety of sample- and-hold applications including amplifier offset or VCA gain adjustments. One or more SMP08s can be used with single or multiple DACs to provide multiple set points within a system. The SMP08 offers significant cost and size reduction over dis- crete designs ...

Page 2

... V 2.4 V 0.8 V 0 500 pF – Load – +85 C for SMP08F Min Typ Max Units 0. mV/s 1.2 mA 0.5 mA 0.06 10.0 V 0.06 9.5 V 2.4 V 0.8 V 0.5 1 3.5 4.25 3.75 6. ...

Page 3

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the SMP08 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

... SMP08–Typical Performance Characteristics 1000 V = +12V + 100 R = 10k 0.1 –55 –35 – 105 125 TEMPERATURE – C Figure 1. Droop Rate vs. Temperature +12V + LOAD 0 –1 –2 –3 – ...

Page 5

... FREQUENCY – Hz Figure 13. Gain, Phase Shift vs. Frequency 10k 100k FREQUENCY – Hz Figure 15. Maximum Output Voltage vs. Frequency REV. D Typical Performance Characteristics–SMP08 LOAD – ...

Page 6

... POWER SUPPLY SEQUENCING V should be applied to the SMP08 before the logic input sig- DD nals. The SMP08 has been designed to be immune to latchup, but standard precautions should still be taken +15V ...

Page 7

... WR ADDRESS BUS ADDRESS DECODE +12V Do not apply signals to the SMP08 with power off unless the input current is limited to less than 10 mA. TYPICAL APPLICATIONS AN 8-CHANNEL MULTIPLEXED D/A CONVERTER Figure 18 illustrates a typical demultiplexing function of the SMP08 used to sample-and-hold eight different output voltages corresponding to eight different digital codes from a D/A converter. The SMP08’ ...

Page 8

... SMP08 0.210 (5.33) 0.160 (4.06) 0.115 (2.93) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 16-Lead Plastic DIP (N-16) 0.840 (21.33) 0.745 (18.93 0.280 (7.11) 0.240 (6.10 0.060 (1.52) PIN 1 0.015 (0.38) MAX 0.130 (3.30) MIN 0.100 0.070 (1.77) 0.022 (0.558) SEATING (2.54) PLANE 0.014 (0.356) 0.045 (1.15) BSC 16-Lead SOIC (Narrow Body) (SO-16) 0.3937 (10.00) 0.3859 (9.80) ...

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