ADS7800 Datasheet, PDF (1/12 Pages) Burr-Brown (TI) – 12-Bit 3ms Sampling ANALOG-TO-DIGITAL CONVERTER

®
ADS7800
12-Bit 3µs Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q 333k SAMPLES PER SECOND
q STANDARD ±10V AND ±5V INPUT
RANGES
q DC PERFORMANCE OVER TEMP:
No Missing Codes
1/2LSB Integral Linearity Error
3/4LSB Differential Linearity Error
q AC PERFORMANCE OVER TEMP:
72dB Signal-to-Noise Ratio
80dB Spurious-free Dynamic Range
–80dB Total Harmonic Distortion
q INTERNAL SAMPLE/HOLD, REFERENCE,
CLOCK, AND 3-STATE OUTPUTS
q POWER DISSIPATION: 215mW max
q PACKAGE: 24-Pin Single-wide DIP
24-Lead SOIC
DESCRIPTION
The ADS7800 is a complete 12-bit sampling analog-
to-digital converter using state-of-the-art CMOS struc-
tures. It contains a complete 12-bit successive ap-
proximation A/D converter with internal sample/hold,
reference, clock, digital interface for microprocessor
control, and three-state output drivers.
The ADS7800 is specified at a 333kHz sampling rate.
Conversion time is factory set for 2.70µs max over
temperature, and the high speed sampling input stage
insures a total acquisition and conversion time of 3µs
max over temperature. Precision, laser-trimmed scal-
ing resistors provide industry-standard input ranges of
±5V or ±10V.
AC and DC performance are completely specified.
Two grades based on linearity and dynamic perform-
ance are available to provide the optimum price/
performance fit in a wide range of applications.
The 24-pin ADS7800 is available in plastic and side-
braze hermetic 0.3" wide DIPs, and in an SOIC
package. It operates from a +5V supply and either a
–12V or –15V supply. The ADS7800 is available in
grades specified over 0°C to +70°C and –40°C to
+85°C temperature ranges.
±10V_IN
±5V_IN
2V
Reference
Out
Control
Logic
Clock
CDAC
SAR
Internal
Ref
Comparator
Output
Latches
And
Three
State
Drivers
BUSY
Three
State
Parallel
Output
Data
Bus
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Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
© 1989 Burr-Brown Corporation
PDS-1018E
Printed in U.S.A. October, 1993