HS574A/SP674A
12–Bit Sampling A/D Converters
s Complete 12–bit A/D Converters with Sample–
s
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
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
DB9
25
26
DB8
24
DB7
23
DB6
22
NIBBLE A
DB5
21
DB4
20
DB3
19
DB2
18
NIBBLE B
DB1
17
DB0
16
DGND
15
NIBBLE C
THREE–STATE BUFFERS AND CONTROL
12–BIT SAR
12–BIT
CAPACITANCE
DAC
COMP
OSC
OFFSET/GAIN
TRIM
REF
CONTROL LOGIC
7.5K
15K
7.5K
N/C
1
VLOGIC
2
12/8
3
CS
4
5
A0
R/C
6
7
8
CE
VCC
REF
OUT
9
AGND
10
REF
IN
11
VEE
15K
7.5K
12
BIP
OFF
13
10V
IN
14
20V
IN
3
