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| 型号： | AD598AD |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC LVDT SIGNAL COND 20-CDIP |
| 标准包装： | 1 |
| 类型： | 信号调节器 |
| 输入类型： | 电压 |
| 输出类型： | 电压 |
| 接口： | LVDT |
| 电流 - 电源： | 15mA |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-CDIP |
| 包装： | 管件 |
| 产品目录页面： | 790 (CN2011-ZH PDF) |
AD598–Typical Characteristics (at +25 C and V
S =
15 V, unless otherwise noted)
THEORY OF OPERATION
A block diagram of the AD598 along with an LVDT (Linear
Variable Differential Transformer) connected to its input is
shown in Figure 5. The LVDT is an electromechanical trans-
ducer whose input is the mechanical displacement of a core and
whose output is a pair of ac voltages proportional to core posi-
tion. The transducer consists of a primary winding energized by
OSC
AMP
VOUT
LVDT
EXCITATION (CARRIER)
11
17
10
16
2
3
FILTER
A–B
A+B
VB
VA
AD598
Figure 5. AD598 Functional Block Diagram
an external sine wave reference source, two secondary windings
connected in series, and the moveable core to couple flux be-
tween the primary and secondary windings.
The AD598 energizes the LVDT primary, senses the LVDT
secondary output voltages and produces a dc output voltage
proportional to core position. The AD598 consists of a sine
wave oscillator and power amplifier to drive the primary, a de-
coder which determines the ratio of the difference between the
LVDT secondary voltages divided by their sum, a filter and an
output amplifier.
The oscillator comprises a multivibrator which produces a
triwave output. The triwave drives a sine shaper, which pro-
duces a low distortion sine wave whose frequency is determined
by a single capacitor. Output frequency can range from 20 Hz to
20 kHz and amplitude from 2 V rms to 24 V rms. Total har-
monic distortion is typically –50 dB.
The output from the LVDT secondaries consists of a pair of
sine waves whose amplitude difference, (VA–VB), is proportional
to core position. Previous LVDT conditioners synchronously
detect this amplitude difference and convert its absolute value to
–20
0
20
60
100
140
–60
–200
–240
–160
–120
–80
–40
0
40
TEMPERATURE –
°C
GAIN
AND
OFFSET
PSRR
–
ppm/Volt
OFFSET PSRR 12–15V
OFFSET PSRR 15–18V
GAIN PSRR 12–15V
GAIN PSRR 15–18V
Figure 1. Gain and Offset PSRR vs. Temperature
–20
0
20
60
100
140
–60
–25
–30
–35
–20
–15
–10
–5
0
5
TEMPERATURE –
°C
GAIN
AND
OFFSET
CMRR
–
ppm/Volt
OFFSET CMRR
± 3V
GAIN CMRR
± 3V
Figure 3. Gain and Offset CMRR vs. Temperature
–20
0
20
60
100
140
–60
–40
–60
–80
–20
0
20
40
80
120
TEMPERATURE –
°C
TYPICAL
GAIN
DRIFT
–
ppm/
°C
Figure 2. Typical Gain Drift vs. Temperature
–20
0
20
60
100
140
–60
–10
–20
0
10
20
TEMPERATURE –
°C
TYPICAL
OFFSET
DRIFT
–
ppm/
°C
Figure 4. Typical Offset Drift vs. Temperature
REV. A
–4–
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相关代理商/技术参数 |
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|---|---|
| AD598AD | 制造商:Analog Devices 功能描述:SEMICONDUCTORS LINEAR |
| AD598J | 制造商:AD 制造商全称:Analog Devices 功能描述:LVDT Signal Conditioner |
| AD598JR | 功能描述:IC LVDT SGNL COND OSC/REF 20SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| AD598JRZ | 功能描述:IC LVDT SGNL COND OSC/REF 20SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 传感器和探测器接口 系列:- 其它有关文件:Automotive Product Guide 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:74 系列:- 类型:触控式传感器 输入类型:数字 输出类型:数字 接口:JTAG，串行 电流 - 电源:100µA 安装类型:表面贴装 封装/外壳:20-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:20-TSSOP 包装:管件 |
| AD598JRZ | 制造商:Analog Devices 功能描述:Signal Conditioner IC |
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