Datasheet for AD8557:
- Manufacturer Part Number : AD8557
- Manufacturer : AD
- Description : Digitally Programmable Sensor Signal Amplifier
- Series : AD8557
- Reference Price : USD 0
- Our Price : We have a better price, contact us by email
- Product Type : Instrumentation Amplifiers
- Function : -
- Current Suggest : Recommended for New Designs
- Status : Obsolete
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : AD8557
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
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The AD8557 is a zero drift, sensor signal amplifier with digitallyprogrammable gain and output offset. Designed to easily andaccurately convert variable pressure sensor and strain bridgeoutputs to a well-defined output voltage range, the AD8557accurately amplifies many other differential or single-endedsensor outputs. The AD8557 uses the Analog Devices, Inc.,proprietary low noise auto-zero and DigiTrim® technologies tocreate an accurate and flexible signal processing solution in acompact footprint.
Gain is digitally programmable in a wide range from 28 to 1300through a serial data interface. Gain adjustment can be fullysimulated in circuit and then permanently programmed withreliable polyfuse technology. Output offset voltage is also digitallyprogrammable and is ratiometric to the supply voltage.
In addition to extremely low input offset voltage and inputoffset voltage drift and very high dc and ac CMRR, the AD8557also includes a pull-up current source at the input pins and apull-down current source at the VCLAMP pin. Output clampingset via an external reference voltage allows the AD8557 to drivelower voltage analog-to-digital converters (ADCs) safely andaccurately.
When used in conjunction with an ADC referenced to the samesupply, the system accuracy becomes immune to normal supplyvoltage variations. Output offset voltage can be adjusted with aresolution of better than 0.4% of the difference between VDDand VSS. A lockout trim after gain and offset adjustmentfurther ensures field reliability.
The AD8557 is fully specified from −40°C to +125°C.Operating from single-supply voltages of 2.7 V to 5.5 V, theAD8557 is offered in an 8-lead SOIC, and a 4 mm × 4 mm,16-lead LFCSP.
Applications
- Automotive sensors
- Pressure and position sensors
- Precision current sensing
- Thermocouple amplifiers
- Industrial weigh scales
- Strain gages
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
