HS574A/SP674A
12–Bit Sampling A/D Converters
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Complete 12–bit A/D Converters with Sample–
s
s
s
Hold, Reference, Clock and Tri–state Outputs
Low Power Dissipation — 110mW Maximum
12–Bit Linearity Over Temperature
Fast Conversion time:
25µs Max (HS574A)
15µs Max (SP674A)
Monolithic Construction
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DESCRIPTION…
The
HS574A/SP674A Series
are complete 12–bit successive–approximation A/D converters
integrated on a single die with tri-state output latches, an internal reference, clock and a sample–
hold. They feature 12–bit linearity over temperature, low power dissipation and fast conversion
time. They are available in commercial and military temperature ranges.
STS
28
DB11
27
DB10
26
DB9
25
DB8
24
DB7
23
DB6
22
DB5
21
DB4
20
DB3
19
DB2
18
DB1
17
DB0
16
DGND
15
NIBBLE A
NIBBLE B
THREE–STATE BUFFERS AND CONTROL
NIBBLE C
12–BIT SAR
OSC
COMP
12–BIT
CAPACITANCE
DAC
OFFSET/GAIN
TRIM
CONTROL LOGIC
REF
7.5K
15K
7.5K
7.5K
12
13
14
15K
N/C
1
2
3
4
5
6
7
8
9
10
11
VLOGIC
12/8
CS
A0
R/C
CE
VCC
REF
OUT
AGND
REF
IN
VEE
BIP
OFF
10V
IN
20V
IN
3
SIPEX [ SIPEX CORPORATION ]
