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Burr-Brown Corporation

ADS7813 Datasheet Preview

ADS7813 Datasheet

Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER

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® ADS7813
ADS7813
ADS7813
Low-Power, Serial 16-Bit Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
DESCRIPTION
q 20µs max CONVERSION TIME
q SINGLE +5V SUPPLY OPERATION
q PIN-COMPATIBLE WITH 12-BIT ADS7812
q EASY-TO-USE SERIAL INTERFACE
q 16-PIN 0.3" PLASTIC DIP AND SOIC
q ±2.0LSB max INL
q 87dB min SINAD
q USES INTERNAL OR EXTERNAL
REFERENCE
q MULTIPLE INPUT RANGES
q 35mW max POWER DISSIPATION
q NO MISSING CODES
q 50µW POWER DOWN MODE
APPLICATIONS
The ADS7813 is a low-power, single +5V supply, 16-
bit sampling analog-to-digital converter. It contains a
complete 16-bit capacitor-based SAR A/D with a
sample/hold, clock, reference, and serial data inter-
face.
The converter can be configured for a variety of input
ranges including ±10V, ±5V, 0V to 10V, and 0.5V to
4.5V. A high impedance 0.3V to 2.8V input range is
also available (input impedance > 10M). For most
input ranges, the input voltage can swing to +16.5V or
–16.5V without damage to the converter.
A flexible SPI compatible serial interface allows data
to be synchronized to an internal or external clock.
The ADS7813 is specified at a 40kHz sampling rate
over the –40°C to +85°C temperature range. It is
available in a 16-pin 0.3" plastic DIP or a 16-lead
SOIC package.
q MEDICAL INSTRUMENTATION
q DATA ACQUISITION SYSTEMS
q ROBOTICS
q INDUSTRIAL CONTROL
q TEST EQUIPMENT
q DIGITAL SIGNAL PROCESSING
q DSP SERVO CONTROL
BUSY
PWRD
CONV
CS
Successive Approximation Register and Control Logic
Clock
R1IN
R2IN
R3IN
BUF
CAP
REF
40k(1)
8k(1)
20k(1)
CDAC
Buffer
4k(1)
Internal
+2.5V Ref
Comparator
Serial
Data
Out
EXT/INT
DATACLK
DATA
NOTE: (1) Actual value may vary ±30%.
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
©1997 Burr-Brown Corporation
PDS-11302A
APDrinSted7in8U1.S3.A. March, 1997
®




Burr-Brown Corporation

ADS7813 Datasheet Preview

ADS7813 Datasheet

Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

SPECIFICATIONS
At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified.
ADS7813P, U
ADS7813PB, UB
PARAMETER
RESOLUTION
ANALOG INPUT
Voltage Range
Impedance
Capacitance
THROUGHPUT SPEED
Conversion Time
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise(2)
Full Scale Error(3)
Full Scale Error Drift
Full Scale Error(3)
Full Scale Error Drift
Bipolar Zero Error
Bipolar Zero Error Drift
Unipolar Zero Error
Unipolar Zero Error Drift
Recovery Time to Rated Accuracy
from Power Down(4)
Power Supply Sensitivity
AC ACCURACY
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-(Noise+Distortion)
Signal-to-Noise
Useable Bandwidth(6)
Full Power –3dB Bandwidth
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Overvoltage Recovery(7)
REFERENCE
Internal Reference Voltage
Internal Reference Source Current
Internal Reference Drift
External Reference Voltage Range
External Reference Current Drain
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format
Data Coding
VOL
VOH
Leakage Current
Output Capacitance
CONDITIONS
Acquire and Convert
Ext. 2.5000V Ref
Ext. 2.5000V Ref
Bipolar Ranges
Bipolar Ranges
Unipolar Ranges
Unipolar Ranges
1.0µF Capacitor to CAP
+4.75V < (VS = +5V) < +5.25
fIN = 1kHz
fIN = 1kHz
fIN = 1kHz
fIN = 1kHz
FS Step
VREF = +2.5V
ISINK = 1.6mA
ISOURCE = 500µA
High-Z State,
VOUT = 0V to VS
High-Z State
MIN TYP MAX
16
See Table I
See Table I
35
20
25
40
±3
+3, –2
15
0.6
±0.5
±14
±0.5
±5
±10
±3
±6
±3
300
±12
90 100
–98 –90
85 89
85 89
130
600
40
20
5
750
2.48 2.5 2.52
100
8
2.3 2.5 2.7
100
MIN
T
16
96
87
87
T
T
TYP
MAX
T
T
T
T
T
T
T
T
T
T
T
T
T
T
102
–100
T
T
T
T
T
T
T
T
T
T
T
T
±2
+2, –1
±0.25
±0.25
T
T
T
–96
T
T
T
–0.3
+2.0
+4
+0.8
VS +0.3V
±10
±10
T
T
Serial
Binary Two’s Complement
+0.4
T
±1
15
T
T
T
T
T
T
15
UNITS
Bits
pF
µs
µs
kHz
LSB(1)
LSB
Bits
LSB
%
ppm/°C
%
ppm/°C
mV
ppm/°C
mV
ppm/°C
µs
LSB
dB(5)
dB
dB
dB
kHz
kHz
ns
ps
µs
ns
V
µA
ppm/°C
V
µA
V
V
µA
µA
V
V
µA
pF
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.
®
ADS7813
2


Part Number ADS7813
Description Low-Power/ Serial 16-Bit Sampling ANALOG-TO-DIGITAL CONVERTER
Maker Burr-Brown Corporation
Total Page 17 Pages
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