®
FPO
FPO 46%
43%
SDM862
SDM863
SDM872
SDM873
16 Single Ended/8 Differential Input
12-BIT DATA ACQUISITION SYSTEMS
FEATURES
q
COMPLETE 12-BIT DATA ACQUISITION
SYSTEM IN A MINIATURE PACKAGE
q
INPUT RANGES SELECTABLE FOR
UNIPOLAR OR BIPOLAR OPERATION
872/3
q
THROUGHPUT RATES: 862/3
8-BIT ACCURACY: 45kHz
67kHz
12-BIT ACCURACY: 33kHz
50kHz
q
SELECTABLE GAINS OF 1, 10, AND 100
q
FULL MICROPROCESSOR COMPATIBLE
INTERFACE
q
GUARANTEED NO MISSING CODES OVER
TEMPERATURE
q
SURFACE-MOUNT OR PIN GRID ARRAY
PACKAGE OPTIONS
q
HIGH RELIABILITY SCREENED VERSIONS
AVAILABLE
q
FULL SPECIFICATION OVER THREE
TEMPERATURE RANGES:
0 to +70
°
C, –25 to +85
°
C, –55 to +125
°
C
q
EVERY UNIT SUPPLIED WITH
ELECTRICAL TEST DATA
q
POWER PLANT MONITORING
q
SECURITY SYSTEMS MONITORING
q
AUTOMATIC TEST EQUIPMENT
DESCRIPTION
16 Single-Ended Inputs:
8 Differential Inputs:
33kHz Throughput Rate:
50kHz Throughput Rate:
SDM862
SDM863
SDM862
SDM872
SDM872
SDM873
SDM863
SDM873
The SDM components are complete, pin-compatible,
data acquisition systems housed in a hermetically sealed
1"-square leadless chip carrier or a 1.1"-square pin grid
array. The small package outlines and low power con-
sumption provide an ideal data acquisition solution
when space is at a premium.
The devices comprise of an input multiplexer, instru-
mentation amplifier with selectable gains, sample/hold
amplifier and A/D converter with microprocessor inter-
face and three-state buffers.
The SDM family will accept unipolar or bipolar voltage
inputs in the range 0 to +10V,
±5V
and
±10V.
For low-
level signals, jumper-selectable gains of 10 or 100 can
be applied. The number of input channels can be ex-
panded by the addition of multiplexers. System integra-
tion is simplified by the microprocessor interface and
the facility of the sample/hold amplifier being con-
trolled directly by the A/D converter.
APPLICATIONS
q
INDUSTRIAL PROCESS MONITORING
q
AIRBORNE SYSTEMS MONITORING
q
ENGINE MONITORING
ANALOG
8 CH
16 CH
8 CH
MUX
INA
DIGITAL
S/H
ADC
12 Bits
862/872
863/873
• Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
International Airport Industrial Park • Mailing Address: PO Box 11400
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP •
© 1988 Burr-Brown Corporation
PDS-686F
Printed in U.S.A. August, 1993
Output MUX*
S/H Output
Hold Capacitor
S/H Output
SDM862, SDM872
SDM863, SDM873
CH0
or
+ – –
CH0
+
CH7
CH0
16 Single-Ended
or
8 Differential
Input
Multiplexer
+
Inst
Amp
–
S/H
Amp
12-Bit
A/D
Converter
Digital
Data
Outputs
CH
15
–
CH7
SPECIFICATIONS
ELECTRICAL
At +25°C, V
CC
=
±15V,
V
DD
= 5V, external sample/hold capacitor of 4700pF.
All grades are burned-in at +125
°
C for 48 hours min.
SDM862/863/872/873 J, A, R
PARAMETER
RESOLUTION
INPUT
ANALOG
Voltage Ranges: Bipolar
Unipolar
Input Impedance: On Channel
Off Channel
Input Capacitance: On Channel
Off Channel
CMRR (20VDC to 1kHz)
Crosstalk (20Vp-p, 1kHz)
(1)
Feedthrough (at 1kHz)
(1)
Offset (channel to channel) G = 1
(2)
Input Bias Current/Channel
Input Voltage Range
(3)
DIGITAL
(7, 8)
MUX Input Channel Select: Logic ‘1’
Logic ‘0’
MUX Input: Logic High
Logic Low
S/H Command: Logic ‘1’
Logic ‘0’
ADC Section: Logic ‘1’
Logic ‘0’
TRANSFER CHARACTERISTICS
ACCURACY
Integral Linearity
(4)
Differential Linearity
(4)
No Missing Codes
Gain Error
(5)
: G = 1
G = 100
Unipolar Offset Error
(5)
Bipolar Offset Error
(5)
Noise Error
(Measured at S/H Output) G = 1
Droop Rate
Temperature Coefficients:
Unipolar Offset
Bipolar Offset
Full-Scale Calibration
±0.024
±0.024
Over Operating Temperature Range
0.5
0.9
16
50
0.5
50
1
500
20
30
60
±0.012
*
*
*
*
*
*
*
*
*
15
25
35
±5, ±10
0-10
10
10
10
10
20
20
85
–85
–85
30
1
+11
–15
5
5
4.0
0.8
0.2
5
30
10
10
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
V
V
Ω
Ω
pF
pF
dB
dB
dB
µV
nA
V
V
µA
µA
V
V
nA
µA
µA
µA
MIN
TYP
MAX
12
SDM862/863/872/873 K, B, S
MIN
TYP
MAX
*
UNITS
Bits
80
*
–80
–80
100
5
*
*
30
30
Data Mode
Byte Select
Chip Select
Chip Enable
Read/Convert
Status
S/H Control
S/H Common
Input
Channel
Select
Enable
*(Output MUX Minus)
Only on SDM863/873
Reference
Sense
Bipolar Offset
Reference In
Reference Out
Amp Output
S/H Input
Input Range
Input Amp
Gain
Select
*
*
*
*
+10
–10
*
*
%FSR
%FSR
%
%
mV
mV
mVp-p
µV/ms
ppm of FSR/°C
ppm of FSR/°C
ppm of FSR/°C
®
SDM862/863/872/873
2
SPECIFICATIONS
ELECTRICAL
At +25°C, V
CC
=
±15V,
V
DD
= 5V, external sample/hold capacitor of 4700pF.
SDM862/863/872/873 J, A, R
PARAMETERS
SYSTEM TIMINGS
ADC Conversion Time: SDM862/SDM863
SDM872/SDM873
S/H Aperture Delay
S/H Aperture Uncertainty
TIMING
Throughput (Serial Mode)
SDM862/SDM863
SDM872/SDM873
(Overlap Mode):
SDM862/SDM863
SDM872/SDM873
MULTIPLEXER
(6)
Switching Time (between channels)
Settling Time (10V step to 0.02%)
Enable Time ‘ON’
‘OFF’
INSTRUMENTATION AMPLIFIER
(6)
Settling Time (20V step to 0.01%)
G=1
G = 10
G = 100
Slew Rate
S/H AMPLIFIER
(6)
Acquisition (10V step to 0.01%)
Aperture Delay
Hold Mode Settling Time
Slew Rate
OUTPUT
DIGITAL DATA
Output Codes: Unipolar
Bipolar
Logic Levels: Logic 0 (Sink = 1.6mA)
Logic 1 (Source = 500µA)
Leakage (Data Bits Only), High-Z State
POWER SUPPLY REQUIREMENTS
Rated Voltage: Analog (±V
CC
)
Digital (V
DD
)
Supply Drain: +15V
–15V
+5V
Power Dissipation
TEMPERATURE RANGE
Operating Temperature Range
JH, KH/JL, KL
AH, BH/AL, BL
RH, SH/RL, SL
Storage Temperature Range
°C
°C
°C
°C
14.25
4.5
15
5
13
22
11
580
15.75
5.5
22
30
15
855
*
*
*
*
*
*
*
*
*
*
*
*
*
*
VDC
VDC
mA
mA
mA
mW
Unipolar Straight Binary (USB)
Bipolar Offset Binary (BOB)
+0.4
*
+5
*
+1.5
2.5
1
0.25
9
9
20
12
50
2
25
15
*
*
*
*
*
*
*
*
µs
µs
ns
ns
MIN
TYP
MAX
SDM862/863/872/873 K, B, S
MIN
TYP
MAX
UNITS
22
28
33
50
*
*
*
*
*
*
*
*
kHz
kHz
kHz
kHz
µs
µs
µs
µs
2
0.5
*
*
12
5
3
4
17
5
50
1.5
10
12.5
7.5
7.5
*
*
*
*
*
*
*
*
*
*
*
*
µs
µs
µs
V/µs
µs
ns
µs
V/µs
*
*
*
+2.4
–5
0.1
V
V
µA
0
–25
–55
–65
70
+85
+125
+150
*
*
*
*
*
*
*
*
* Specification same as SDM862/863/872/873J, A, R grades.
NOTES: (1) Measured at the same and hold output. (2) Measured with all input channels grounded. (3) The range of voltage on any input with respect to common over
which accuracy and leakage current is guaranteed. (4) Applicable over full operating temperature range. NO MISSING CODES GUARANTEED OVER TEMPERATURE
RANGE. (5) Adjustable to zero using external potentiometer or select-on-test resistor. (6) Specifications are at +25°C and measured at 50% level of transition. (7) When
using TTL drivers a 1kΩ pull-up resistor should be used. (8) Muxes operate in a break-before-make manner.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
3
SDM862/863/872/873
DIGITAL TIMING
SYMBOL
PARAMETER
MIN
TYP
MAX UNITS
CONVERT MODE
tdsc
Status Delay from CE
thec
CE Pulse Width
tssc
CS to CE Setup
thsc
CS Low During CE High
tsrc
R/C to CE Setup
thrc
R/C Low During CE High
tsac
Byte Select to CE Setup
thac
Byte Selected Valid During CE High
tc 86X
Conversion Time: 12 Bit Cycle
8 Bit Cycle
tc 87X
Conversion Time: 12 Bit Cycle
8 Bit Cycle
READ MODE
tdd
Access Time from CE
thd
Data Valid after CE Low
thl
Output Float Delay
tssr
CS to CE Setup
tsrr
R/C to CE Setup
tsar
Byte Select to CE Setup
thsr
CS Valid after CE Low
thrr
R/C High after CE Low
thar
Byte Select Valid after CE Low
ths 86X
Status Delay after Data Valid
ths 87X
Status Delay after Data Valid
ABSOLUTE MAXIMUM RATINGS
(1)
+V
CC
to ACOM .................................................................... –0.5V to +16V
–V
CC
to ACOM ....................................................................... +0.5 to –16V
+V
DD
to DCOM ................................................................... –0.5V to +7.0V
Analog Input Signal Range ................................ +V
CC
+20V to –V
CC
–20V
Digital Input Signal ............................................................... –0.5V to +V
DD
ACOM to DCOM ..................................................................................
±1V
NOTE: (1) Absolute maximum ratings are limiting values applied individually,
beyond which the serviceability of the circuit may be impaired. Functions
operation under any of these conditions is not necessarily implied.
50
50
50
50
50
0
50
9
6
9
6
100
30
20
20
0
20
0
20
20
13
12
8
75
35
100
0
0
25
0
0
25
500
300
200
25
17
15
10
150
150
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
/QM HIGH RELIABILITY SCREENING
High Power Internal
Visual Inspection .......................................... Burr-Brown Spec. QC2010
Stabilization Bake ............................................................. 24Hr at +150°C
Temperature Cycling ...................................... 10 Cycles –65°C to +150°C
Constant Acceleration .......................................................... 30kG, Y1 axis
Hermeticity Fine Leak ................................................. Helium 5
x
10
–8
cc/s
Hermeticity Gross Leak ......................................................... Fluorocarbon
Burn-In ............................................................................ 160Hr at +125°C
25
50
0
50
0
0
50
100
100
1000
600
CONVERSION CYCLE TIMING
READ CYCLE TIMING
CE
t
SSC
CS
t
SRC
R/C
t
HRC
Byte
Select
t
HSC
t
HEC
CE
t
SSR
CS
t
HRR
t
SRR
Byte
Select
t
HSR
R/C
t
SAC
t
SAR
t
HAC
t
DSC
t
C
High Impedance
t
HAR
STS
t
HS
DB11–
DBO
High-Z
t
DD
Data Valid
t
HL
t
HD
STS
DB11–
DBO
®
SDM862/863/872/873
4
ORDERING INFORMATION
(1)
Product
SDM862J
SDM862K
SDM862A
SDM862B
SDM862R
SDM862S
SDM872J
SDM872K
SDM872A
SDM872B
SDM872R
SDM872S
Input
16SE
16SE
16SE
16SE
16SE
16SE
16SE
16SE
16SE
16SE
16SE
16SE
LCC, PGA Accuracy
Package
(% FSR)
L,H
L,H
L,H
L,H
L,H
L,H
L,H
L,H
L,H
L,H
L,H
L,H
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
Throughput
33kHz
33kHz
33kHz
33kHz
33kHz
33kHz
50kHz
50kHz
50kHz
50kHz
50kHz
50kHz
Temperature
Range (
°
C)
0 to +70
0 to +70
–25 to +85
–25 to +85
–55 to +125
–55 to +125
0 to +70
0 to +70
–25 to +85
–25 to +85
–55 to +125
–55 to +125
Product
SDM863J
SDM863K
SDM863A
SDM863B
SDM863R
SDM863S
SDM873J
SDM873K
SDM873A
SDM873B
SDM873R
SDM873S
Input
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
8DIF
LCC, PGA Accuracy
Package
(% FSR)
L, H
L, H
L, H
L, H
L, H
L, H
L,H
L,H
L,H
L,H
L,H
L,H
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
±0.024
±0.012
Throughput
33kHz
33kHz
33kHz
33kHz
33kHz
33kHz
50kHz
50kHz
50kHz
50kHz
50kHz
50kHz
Temperature
Range (
°
C)
0 to +70
0 to +70
–25 to +85
–25 to +85
–55 to +125
–55 to +125
0 to +70
0 to +70
–25 to +85
–25 to +85
–55 to +125
–55 to +125
NOTE: (1) 16 single-ended inputs, LCC package, with accuracy of 0.24% FSR. Temp Range of 0°C to +70°C and throughput of 33kHz = SDM862JL.
PACKAGE INFORMATION
PRODUCT
PC862/863-1
PC862/863-2
DESCRIPTION
LCC (Socketed) Evaluation PCB
(2)
PGA Evaluation PCB
PACKAGE DRAWING
NUMBER
(1)
907
906
NOTE: (1) For detailed drawing and dimension table, please see end of data
sheet, or Appendix C of Burr-Brown IC Data Book. (2) Socket is MC0068-1.
®
5
SDM862/863/872/873
