AD698APZ

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Series Information for AD698APZ - Analog Devices

Features

  • feature
    Single Chip Solution, Contains Internal Oscillator and Voltage Reference No Adjustments Required Interfaces to Half-Bridge, 4-Wire LVDT DC Output Proportional to Position 20 Hz to 20 kHz Frequency Range Unipolar or Bipolar Output Will Also Decode AC Bridge Signals Outstanding Performance Linearity: 0.05% Output Voltage: 611 V Gain Drift: 20 ppm/8C (typ) Offset Drift: 5 ppm/8C (typ)

Description

LVDT SIGNAL COND 20KHZ 0.05% 28LCC

The AD698 is a complete, monolithic Linear Variable Differen- tial Transformer (LVDT) signal conditioning subsystem. It is used in conjunction with LVDTs to convert transducer mechan- ical position to a unipolar or bipolar dc voltage with a high de- gree of accuracy and repeatability. All circuit functions are included on the chip. With the addition of a few external passive components to set frequency and gain, the AD698 converts the raw LVDT output to a scaled dc signal. The device will operate with half-bridge LVDTs, LVDTs connected in the series op- posed configuration (4-wire), and RVDTs. The AD698 contains a low distortion sine wave oscillator to drive the LVDT primary. Two synchronous demodulation channels of the AD698 are used to detect primary and second- ary amplitude. The part divides the output of the secondary by the amplitude of the primary and multiplies by a scale factor. This eliminates scale factor errors due to drift in the amplitude of the primary drive, improving temperature performance and stability. The AD698 uses a unique ratiometric architecture to eliminate several of the disadvantages associated with traditional ap- proaches to LVDT interfacing. The benefits of this new cir- cuit are: no adjustments are necessary; temperature stability is improved; and transducer interchangeability is improved. The AD698 is available in two performance grades: Grade Temperature Range Package AD698AP –40°C to +85°C 28-Pin PLCC AD698SQ –55°C to +125°C 24-Pin Cerdip

Specifications

Bandwidth:
20kHz
Supply Voltage Min:
13V
Supply Voltage Max:
36V
Amplifier Case Style:
LCC
No. of Pins:
28Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (07-Jul-2017)

Alternate Descriptions

RS Components
Universal LVDT Signal Conditioner
Transfer Multisort Elektronik
Integrated circuit: LVDT signal conditioner; LVDT; PLCC28
Richardson RFPD
AMPLIFIER - SPECIAL PURPOSE
RS Components UK
Universal LVDT Signal Conditioner
RS Components DE
Differenzverstärker AD698APZ, 17,5 V PLCC 28-Pin Versorgungsspannung bipolar typ. : 13V Montage-Typ : SMD Abmessungen : 11.58 x 11.58 x 3.94mm Länge : 11.58mm Betriebstemperatur max. : +85 °C Betriebstemperatur min. : -40 °C, Analog Devices
RS Components HK
Universal LVDT Signal Conditioner
RS Components JP
半導体,LVDS信号コンディショ�
RS Components FR
Conditionneur de signal LVDT universel
RS Components CN
Universal LVDT Signal Conditioner
RS Components ES
Universal LVDT Signal Conditioner
RS Components NL
Universal LVDT Signal Conditioner
RS Components NO
Universal LVDT Signal Conditioner
RS Components US
Universal LVDT Signal Conditioner
RS Components SG
Universal LVDT Signal Conditioner
RS Components TW
Universal LVDT Signal Conditioner