ADS7807
AD
S7807
A
D
S
7
8
0
7
SBAS022C – NOVEMBER 1992 – REVISED FEBRUARY 2006
Low-Power, 16-Bit, Sampling CMOS
ANALOG-to-DIGITAL CONVERTER
FEATURES
DESCRIPTION
ꢀ 35mW max POWER DISSIPATION
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.
ꢀ 50µW POWER-DOWN MODE
ꢀ 25µs max ACQUISITION AND CONVERSION
ꢀ ±1.5LSB max INL
ꢀ DNL: 16 bits “No Missing Codes”
ꢀ 86dB min SINAD WITH 1kHz INPUT
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.
ꢀ ±10V, 0V TO +5V, AND 0V TO +4V INPUT RANGES
ꢀ SINGLE +5V SUPPLY OPERATION
ꢀ PARALLEL AND SERIAL DATA OUTPUT
ꢀ PIN-COMPATIBLE WITH THE 12-BIT ADS7806
ꢀ USES INTERNAL OR EXTERNAL REFERENCE
ꢀ 0.3" DIP-28 AND SO-28
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.
R/C
CS
BYTE
Clock
Successive Approximation Register and Control Logic
Power
Down
40kΩ
CDAC
R1IN
BUSY
Parallel
and
Serial Data
Clock
20kΩ
40kΩ
10kΩ
Serial
Data
Out
Comparator
R2IN
Serial Data
CAP
Parallel Data
Buffer
6kΩ
8
Internal
+2.5V Ref
Reference
Power-Down
REF
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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