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AD574AJPZ-REEL PDF预览

AD574AJPZ-REEL

更新时间: 2024-02-10 14:48:11
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
12页 383K
描述
Complete 12-Bit A/D Converter

AD574AJPZ-REEL 技术参数

生命周期:Contact Manufacturer包装说明:,
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.56转换器类型:ADC, SUCCESSIVE APPROXIMATION
输出位码:OFFSET BINARYBase Number Matches:1

AD574AJPZ-REEL 数据手册

 浏览型号AD574AJPZ-REEL的Datasheet PDF文件第2页浏览型号AD574AJPZ-REEL的Datasheet PDF文件第3页浏览型号AD574AJPZ-REEL的Datasheet PDF文件第4页浏览型号AD574AJPZ-REEL的Datasheet PDF文件第5页浏览型号AD574AJPZ-REEL的Datasheet PDF文件第6页浏览型号AD574AJPZ-REEL的Datasheet PDF文件第7页 
Complete  
12-Bit A/D Converter  
a
AD574A*  
BLOCK DIAGRAM AND  
PIN CONFIGURATION  
FEATURES  
Complete 12-Bit A/D Converter with Reference  
and Clock  
8- and 16-Bit Microprocessor Bus Interface  
Guaranteed Linearity Over Temperature  
0؇C to +70؇C – AD574AJ, K, L  
STATUS  
STS  
+5V SUPPLY  
VLOGIC  
1
2
28  
DB11  
MSB  
DATA MODE SELECT  
12/8  
MSB  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
N
I
B
B
L
E
CONTROL  
CHIP SELECT  
CS  
BYTE ADDRESS/  
SHORT CYCLE  
AO  
3
DB10  
DB9  
DB8  
DB7  
DB6  
DB5  
DB4  
DB3  
DB2  
–55؇C to +125؇C – AD574AS, T, U  
3
4
No Missing Codes Over Temperature  
35 s Maximum Conversion Time  
Buried Zener Reference for Long-Term Stability  
and Low Gain T.C. 10 ppm/؇C max AD574AL  
12.5 ppm/؇C max AD574AU  
Ceramic DIP, Plastic DIP or PLCC Package  
Available in Higher Speed, Pinout-Compatible Versions  
(15 s AD674B, 80 s AD774B; 10 s (with SHA) AD1674)  
Available in Versions Compliant with MIL-STD-883 and  
JAN QPL  
S
T
A
T
E
READ/CONVERT  
A
5
SAR  
CLOCK  
3k  
12  
R/C  
CHIP ENABLE  
CE  
6
N
I
B
B
L
E
O
U
T
P
U
T
+12/+15V SUPPLY  
VCC  
7
DIGITAL  
DATA  
OUTPUTS  
12  
COMP  
IDAC  
IDAC  
4 x N x IREF  
+10V REFERENCE  
REF OUT  
8
10V  
REF  
B
=
ANALOG COMMON  
AC  
9
B
U
F
REFERENCE INPUT  
REF IN  
-12/-15V SUPPLY  
VEE  
N
I
B
B
L
E
10  
11  
12  
13  
14  
8k  
IREF  
19.95k  
9.95k  
5k  
5k  
F
E
R
S
BIPOLAR OFFSET  
BIP OFF  
17 DB1  
DB0  
C
LSB  
DAC  
N
VEE  
10V SPAN INPUT  
10VIN  
16  
LSB  
DIGITAL COMMON  
DC  
20V SPAN INPUT  
20VIN  
15  
12  
AD574A  
PRODUCT DESCRIPTION  
PRODUCT HIGHLIGHTS  
The AD574A is a complete 12-bit successive-approximation  
analog-to-digital converter with 3-state output buffer circuitry  
for direct interface to an 8- or 16-bit microprocessor bus. A high  
precision voltage reference and clock are included on-chip, and  
the circuit guarantees full-rated performance without external  
circuitry or clock signals.  
1. The AD574A interfaces to most 8- or 16-bit microproces-  
sors. Multiple-mode three-state output buffers connect di-  
rectly to the data bus while the read and convert commands  
are taken from the control bus. The 12 bits of output data  
can be read either as one 12-bit word or as two 8-bit bytes  
(one with 8 data bits, the other with 4 data bits and 4 trailing  
zeros).  
The AD574A design is implemented using Analog Devices’  
Bipolar/I2L process, and integrates all analog and digital func-  
tions on one chip. Offset, linearity and scaling errors are mini-  
mized by active laser-trimming of thin-film resistors at the wafer  
stage. The voltage reference uses an implanted buried Zener for  
low noise and low drift. On the digital side, I2L logic is used for  
the successive-approximation register, control circuitry and  
3-state output buffers.  
2. The precision, laser-trimmed scaling and bipolar offset resis-  
tors provide four calibrated ranges: 0 volts to +10 volts and 0  
volts to +20 volts unipolar, –5 volts to +5 volts and –10 volts  
to +10 volts bipolar. Typical bipolar offset and full-scale cali-  
bration errors of ±0.1% can be trimmed to zero with one ex-  
ternal component each.  
3. The internal buried Zener reference is trimmed to 10.00  
volts with 0.2% maximum error and 15 ppm/°C typical T.C.  
The reference is available externally and can drive up to  
1.5 mA beyond the requirements of the reference and bipolar  
offset resistors.  
The AD574A is available in six different grades. The AD574AJ,  
K, and L grades are specified for operation over the 0°C to  
+70°C temperature range. The AD574AS, T, and U are speci-  
fied for the –55°C to +125°C range. All grades are available in a  
28-pin hermetically-sealed ceramic DIP. Also, the J, K, and L  
grades are available in a 28-pin plastic DIP and PLCC, and the  
J and K grades are available in ceramic LCC.  
4. AD674B (15 µs) and AD774B (8 µs) provide higher speed,  
pin compatibility; AD1674 (10 µs) includes on-chip Sample-  
Hold Amplifier (SHA).  
The S, T, and U grades in ceramic DIP or LCC are available  
with optional processing to MIL-STD-883C Class B; the T  
and U grades are available as JAN QPL. The Analog Devices’  
Military Products Databook should be consulted for details on  
/883B testing of the AD574A.  
*Protected by U.S. Patent Nos. 3,803,590; 4,213,806; 4,511,413; RE 28,633.  
REV. B  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, nor for any infringements of patents or other rights of third parties  
which may result from its use. No license is granted by implication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 617/329-4700  
Fax: 617/326-8703  

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