ADS7807_08 Datasheet, PDF (1/25 Pages) Burr-Brown (TI) – Low-Power, 16-Bit, Sampling CMOS ANALOG-to-DIGITAL CONVERTER

ADS7807
ADS7807
ADS7807
SBAS022C – NOVEMBER 1992 – REVISED FEBRUARY 2006
Low-Power, 16-Bit, Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
q 35mW max POWER DISSIPATION
q 50µW POWER-DOWN MODE
q 25µs max ACQUISITION AND CONVERSION
q ±1.5LSB max INL
q DNL: 16 bits “No Missing Codes”
q 86dB min SINAD WITH 1kHz INPUT
q ±10V, 0V TO +5V, AND 0V TO +4V INPUT RANGES
q SINGLE +5V SUPPLY OPERATION
q PARALLEL AND SERIAL DATA OUTPUT
q PIN-COMPATIBLE WITH THE 12-BIT ADS7806
q USES INTERNAL OR EXTERNAL REFERENCE
q 0.3" DIP-28 AND SO-28
DESCRIPTION
The ADS7807 is a low-power, 16-bit, sampling Analog-to-
Digital (A/D) converter using state-of-the-art CMOS struc-
tures. It contains a complete 16-bit, capacitor-based, Suc-
cessive Approximation Register (SAR) A/D converter with
sample-and-hold, clock, reference, and microprocessor inter-
face with parallel and serial output drivers.
The ADS7807 can acquire and convert 16 bits to within
±1.5LSB in 25µs max while consuming only 35mW max.
Laser trimmed scaling resistors provide standard industrial
input ranges of ±10V and 0V to +5V. In addition, a 0V to +4V
range allows development of complete single-supply sys-
tems.
The ADS7807 is available in a 0.3" DIP-28 and SO-28, both
fully specified for operation over the industrial –40°C to
+85°C temperature range.
R1_IN
40kΩ
R2_IN
20kΩ
10kΩ
CAP
40kΩ
REF
Clock
Successive Approximation Register and Control Logic
R/C
CS
BYTE
Power
Down
CDAC
Comparator
Buffer
6kΩ
Internal
+2.5V Ref
Reference
Power-Down
Parallel
and
Serial
Data
Out
BUSY
Serial Data
Clock
Serial Data
Parallel Data
8
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