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参数资料
| 型号： | AD652AQ/+ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/28页 |
| 文件大小： | 779K |
| 描述： | IC V-F CONV SYNCH MONO 5V 16CDIP |
| 标准包装： | 25 |
| 类型： | 电压至频率 |
| 频率 - 最大： | 2MHz |
| 全量程： | ±50ppm/°C |
| 线性： | ±0.02% |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-CERDIP |
| 包装： | 管件 |
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AD652
Rev. C | Page 24 of 28
BRIDGE TRANSDUCER INTERFACE
The circuit of Figure 38 illustrates a simple interface between
the AD652 and a bridge-type transducer. The AD652 is an ideal
choice because its buffered 5 V reference can be used as the
bridge excitation, thereby ratiometrically eliminating the gain
drift related errors. This reference provides a minimum of
10 mA of external current, which is adequate for bridge
resistance of 600 & and above. If, for example, the bridge
resistance is 120 & or 350 &, an external pull-up resistor (R
PU
) is
required. R
PU
and can be calculated using the following formula:
mA
10
V
5
V
5
(max)
+
=
BRIDGE
S
PU
R
V
R
An instrumentation amplifier is used to condition the bridge
signal before presenting it to the SVFC. With its high CMRR,
the AD652 minimizes common-mode errors and can be set to
arbitrary gains between 1 and 10,000 via three resistors,
simplifying the scaling for the parts calibrated 10 V input range.
These resistors should be selected such that the following
equation holds:
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
=
1
2
V
10
G
F
BRIDGE
R
R
V
where 10 k& d RF d 20 k&, and VBRIDGE is the maximum output
voltage of the bridge.
The bridge output may be unipolar, as is the case for most
pressure transducers, or it may be bipolar as in some strain
measurements. If the signal is unipolar, the reference input of
the AD625 (Pin 7) is simply grounded. If the bridge has a
bipolar output, however, the AD652 reference can be tied to
Pin 7, thereby, converting a 5 V signal (after gain) into a 0 V to
+10 V input for the SVFC.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ONE
SHOT
AND
"D"
FLOP
Q CK
D
Q
1mA
20k&
AD652
SYNCHRONOUS
VOLTAGE-TO-
FREQUENCY
CONVERTER
5V
REFERENCE
9
8
11
7
10
1
5
2
15
12
16
AD625
R
BRIDGE
V
BRIDGE
+
R
F
R
G
R
F
+15V
15V
1
2
S1
+15V
CLOCK IN
FREQ
OUT
+15V
V
LOGIC
R
L
R
PU
15V
C
INT
NOTES
1.R
F
SHOULD BE BETWEEN 10k& AND 20k&.
2.R
PU
NEEDED IF R
BRIDGE
600&
3.S1 IN POSITION 1 FOR UNIPOLAR SIGNALS
AND POSITION 2 FOR BIPOLAR SIGNALS.
F
OUT
=V
BRIDGE
F
CLOCK
2
10V
+ 1
2R
F
R
G
Figure 38. Bridge Transducer Interface
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD652AQ | 制造商:Analog Devices 功能描述:SEMICONDUCTORS LINEAR 制造商:Analog Devices 功能描述:V/F CONVERTER 2MHZ 0.02% 5V 16DIP 制造商:Analog Devices 功能描述:V/F CONVERTER, 2MHZ, 0.02%, 5V, 16DIP |
| AD652AQ/+ | 功能描述:IC V-F CONV SYNCH MONO 5V 16CDIP RoHS:否 类别:集成电路 (IC) >> PMIC - V/F 和 F/V 转换器 系列:- 标准包装:1 系列:- 类型:频率至电压 频率 - 最大:10kHz 全量程:- 线性:±0.3% 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:Digi-Reel® 其它名称:LM2917MX-8/NOPBDKR |
| AD652AQ2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Monolithic Synchronous Voltage-to-Frequency Converter |
| AD652AQZ | 制造商:Analog Devices 功能描述:VFC Sync 2MHz 16-Pin CDIP 制造商:Analog Devices 功能描述:IC V/F-F/V CONVERTER DIP16 652 |
| AD652BQ | 功能描述:IC V-F CONVERTER SYNC 16-CDIP RoHS:否 类别:集成电路 (IC) >> PMIC - V/F 和 F/V 转换器 系列:- 标准包装:1 系列:- 类型:频率至电压 频率 - 最大:10kHz 全量程:- 线性:±0.3% 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:Digi-Reel® 其它名称:LM2917MX-8/NOPBDKR |
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