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AD674BTD PDF预览

AD674BTD

更新时间: 2024-01-25 07:56:28
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 244K
描述
Complete 12-Bit A/D Converters

AD674BTD 技术参数

Source Url Status Check Date:2013-05-01 14:56:16.169是否无铅: 含铅
是否Rohs认证: 不符合生命周期:Active
零件包装代码:DIP包装说明:DIP, DIP28,.6
针数:28Reach Compliance Code:not_compliant
ECCN代码:3A001.A.2.CHTS代码:8542.39.00.01
风险等级:5.29最大模拟输入电压:10 V
最小模拟输入电压:-10 V最长转换时间:15 µs
转换器类型:ADC, SUCCESSIVE APPROXIMATIONJESD-30 代码:R-CDIP-T28
JESD-609代码:e0长度:35.815 mm
最大线性误差 (EL):0.0244%标称负供电电压:-12 V
模拟输入通道数量:1位数:12
功能数量:1端子数量:28
最高工作温度:125 °C最低工作温度:-55 °C
输出位码:BINARY输出格式:PARALLEL, WORD
封装主体材料:CERAMIC, METAL-SEALED COFIRED封装代码:DIP
封装等效代码:DIP28,.6封装形状:RECTANGULAR
封装形式:IN-LINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:5,+-12/+-15 V认证状态:Not Qualified
座面最大高度:3.68 mm子类别:Analog to Digital Converters
标称供电电压:12 V表面贴装:NO
技术:BIMOS温度等级:MILITARY
端子面层:Tin/Lead (Sn63Pb37)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:15.24 mm

AD674BTD 数据手册

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Complete 12-Bit  
A/D Converters  
a
AD674B*/AD774B*  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Complete Monolithic 12-Bit A/D Converters with  
Reference, Clock, and Three-State Output Buffers  
Industry Standard Pinout  
High Speed Upgrades for AD574A  
8- and 16-Bit Microprocessor Interface  
8 s (Max) Conversion Time (AD774B)  
15 s (Max) Conversion Time (AD674B)  
5 V, 10 V, 0 V–10 V, 0 V–20 V Input Ranges  
Commercial, Industrial, and Military Temperature  
Range Grades  
5V SUPPLY  
STATUS  
STS  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
1
2
V
LOGIC  
DATA MODE SELECT  
12/8  
MSB  
N
DB11 (MSB)  
DB10  
DB9  
CHIP SELECT  
CS  
Y
B
B
L
CONTROL  
3
3
BYTE ADDRESS/  
4
SHORT CYCLE A  
S
T
A
T
E
0
E
READ/CONVERT R/C  
5
DB8  
12  
CLOCK  
SAR  
COMP  
A
CHIP ENABLE  
CE  
6
DB7  
N
Y
B
B
L
+
12V/15V SUPPLY  
O
U
T
P
U
T
7
DB6  
V
DIGITAL  
DATA  
OUTPUTS  
CC  
10V  
I DAC  
10V REFERENCE  
REF  
8
DB5  
REF OUT  
E
MIL-STD-883-Compliant Versions Available  
ANALOG COMMON  
AC  
9
DB4  
B
REFERENCE INPUT  
N
Y
B
B
L
B
U
F
10  
11  
12  
13  
14  
DB3  
REF IN  
I REF  
–12V/15V SUPPLY  
199.95  
kꢀ  
+
DB2  
F
V
EE  
E
R
S
BIPOLAR OFFSET  
E
DB1  
BIPOFF  
DAC  
10V SPAN INPUT  
VEE  
C
N
DB0 (LSB)  
10V  
IN  
LSB  
20V SPAN INPUT  
DIGITAL  
COMMON DC  
VOLTAGE  
DIVIDER  
20V  
IN  
AD674B/AD774B  
PRODUCT DESCRIPTION  
PRODUCT HIGHLIGHTS  
The AD674B and AD774B are complete 12-bit successive-  
approximation analog-to-digital converters with three-state  
output buffer circuitry for direct interface to 8- and 16-bit  
microprocessor busses. A high-precision voltage reference and  
clock are included on chip, and the circuit requires only power  
supplies and control signals for operation.  
1. Industry Standard Pinout: The AD674B and AD774B use  
the pinout established by the industry standard AD574A.  
2. Analog Operation: The precision, laser-trimmed scaling and  
bipolar offset resistors provide four calibrated ranges: 0 V to  
10 V and 0 V to 20 V unipolar; –5 V to +5 V and –10 V to  
+10 V bipolar. The AD674B and AD774B operate on +5 V  
and 12 V or 15 V power supplies.  
The AD674B and AD774B are pin-compatible with the indus-  
try standard AD574A, but offer faster conversion time and bus-  
access speed than the AD574A and lower power consumption.  
The AD674B converts in 15 µs (maximum) and the AD774B  
converts in 8 µs (maximum).  
3. Flexible Digital Interface: On-chip multiple-mode three-state  
output buffers and interface logic allow direct connection to  
most microprocessors. 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 monolithic design is implemented using Analog Devices’  
BiMOS II process allowing high-performance bipolar analog  
circuitry to be combined on the same die with digital CMOS logic.  
Offset, linearity, and scaling errors are minimized by active  
laser trimming of thin-film resistors.  
4. The internal reference is trimmed to 10.00 V with 1% maxi-  
mum error and 10 ppm/°C typical temperature coefficient.  
The reference is available externally and can drive up to  
2.0 mA beyond the requirements of the converter and bipo-  
lar offset resistors.  
Five different grades are available. The J and K grades are  
specified for operation over the 0°C to 70°C temperature range.  
The A and B grades are specified from –40°C to +85°C, the T grade  
is specified from –55°C to +125°C. The J and K grades are  
available in a 28-lead plastic DIP or 28-lead SOIC. All other grades  
are available in a 28-lead hermetically sealed ceramic DIP.  
5. The AD674B and AD774B are available in versions compli-  
ant with MIL-STD-883. Refer to the Analog Devices Mili-  
tary Products Databook or current AD674B/AD774B/883B  
data sheet for detailed specifications.  
*Protected by U.S. Patent Nos. 4,250,445; 4,808,908; RE30586.  
REV. C  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
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: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© Analog Devices, Inc., 2002  

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