参数资料
型号: HI-574A
厂商: Intersil Corporation
元件分类: 串行ADC
英文描述: Complete, 12-Bit A/D Converters with Microprocessor Interface(完备的12 位A/D转换器)
中文描述: 完成后,12位A / D与微处理器接口(完备的12位的A / D转换器转换器)
文件页数: 1/18页
文件大小: 200K
代理商: HI-574A
6-952
Features
Complete 12-Bit A/D Converter with Reference and Clock
Full 8-Bit, 12-Bit or 16-Bit Microprocessor Bus Interface
Bus Access Time. . . . . . . . . . . . . . . . . . . . . . . . . .150ns
No Missing Codes Over Temperature
Minimal Setup Time for Control Signals
Fast Conversion Times
- HI-574A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
μ
s
- HI-674A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
μ
s
- HI-774 (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
μ
s
Digital Error Correction (HI-774)
Low Noise, via Current-Mode Signal
Transmission Between Chips
Byte Enable/Short Cycle (A
O
Input)
- Guaranteed Break-Before-Make Action, Eliminating
Bus Contention During Read Operation. Latched by
Start Convert Input (To Set the Conversion Length)
Supply Voltage . . . . . . . . . . . . . . . . . . . . .
±
12V to
±
15V
Applications
Military and Industrial Data Acquisition Systems
Electronic Test and Scientific Instrumentation
Process Control Systems
Description
The HI-X74(A) is a complete 12-bit, Analog-to-Digital
Converter, including a +10V reference clock, three-state out-
puts and a digital interface for microprocessor control. Succes-
sive approximation conversion is performed by two monolithic
dice housed in a 28 lead package. The bipolar analog die fea-
tures the Intersil Dielectric Isolation process, which provides
enhanced AC performance and freedom from latch-up.
Custom design of each IC (bipolar analog and CMOS digital)
has yielded improved performance over existing versions of
this converter. The voltage comparator features high PSRR
plus a high speed current-mode latch, and provides precise
decisions down to 0.1 LSB of input overdrive. More than 2X
reduction in noise has been achieved by using current
instead of voltage for transmission of all signals between the
analog and digital ICs. Also, the clock oscillator is current
controlled for excellent stability over temperature.
The HI-X74(A) offers standard unipolar and bipolar input
ranges, laser trimmed for specified linearity, gain and offset
accuracy. The low noise buried zener reference circuit is
trimmed for minimum temperature coefficient.
Power requirements are +5V and
±
12V to
±
15V, with typical
dissipation of 385mW (HI-574A/674A) and 390mW (HI-774) at
12V. All models are available in sidebrazed DIP PDIP and
CLCC. For additional HI-Rel screening including 160 hour burn-
in, specify “-8” suffix. For MIL-STD-883 compliant parts, request
HI-574A/883, HI-674A/883, and HI-774/883 data sheets.
Pinouts
(PDIP, SBDIP)
TOP VIEW
(CLCC)
TOP VIEW
STATUS, STS
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
DIG COMMON,
DC
DIGITAL
DATA
OUTPUTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CHIP ENABLE, CE
+10V REF, REF OUT
REFERENCE INPUT
20V INPUT
ANALOG
COMMON, AC
+12V/+15V SUPPLY, V
CC
BYTE ADDR/SHORT
CYCLE, A
O
READ/CONVERT, R/C
10V INPUT
+5V SUPPLY, V
LOGIC
CHIP SEL, CS
DATA MODE SEL, 12/8
BIPOLAR OFFSET
BIP OFF
-12V/-15V SUPPLY, V
EE
MSB
LSB
14
13
12
11
10
9
8
7
17
16
15
2
5
30
35
39
38
37
36
33
34
32
31
29
4
6
3
ANALOG COMMON, AC
REFERENCE INPUT,
NC
NC
NC
REF IN
+10V REFERENCE,
REF OUT
BIPOLAR OFFSET,
BIP OFF
NC
NC
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
NC
N
N
S
44
D
43
D
42
B
N
41
N
40
1
1
2
N
N
N
N
N
(
D
C
D
D
N
C
CHIP ENABLE, CE
+15V SUPPLY, V
CC
28
27
26
25
24
23
22
21
20
19
18
D
-15V SUPPLY, V
EE
READ CONVERT, R/C
S
O
+
L
S
August 1997
HI-574A, HI-674A,
HI-774
Complete, 12-Bit A/D Converters
with Microprocessor Interface
File Number
3096.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright Intersil Corporation 1999
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