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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- Product Details
- The AD8494/AD8495/AD8496/AD8497 are precision instrumentation amplifiers with thermocouple cold junction compensators on an integrated circuit. They produce a high level (5 mV/°C) output directly from a thermocouple signal by combining an ice point reference with a precalibrated amplifier. They can be used as standalone thermometers or as switched output setpoint controllers using either a fixed or remote setpoint control.
- The AD8494/AD8495/AD8496/AD8497 can be powered from a single-ended supply (less than 3 V) and can measure temperatures below 0°C by offsetting the reference input. To minimize self-heating, an unloaded AD849x typically operates with a total supply current of 180 μA, but it is also capable of delivering in excess of ±5 mA to a load.
- The AD8494 and AD8496 are precalibrated by laser wafer trimming to match the characteristics of J type (iron-constantan) thermocouples; the AD8495 and AD8497 are laser trimmed to match the characteristics of K type (chromel-alumel) thermo-couples. See Table 1 on the data sheet for the optimized ambient temperature range of each part.
- The AD8494/AD8495/AD8496/AD8497 allow a wide variety of supply voltages. With a 5 V single supply, the 5 mV/°C output allows the devices to cover nearly 1000 degrees of a thermo-couple’s temperature range.
- The AD8494/AD8495/AD8496/AD8497 work with 3 V supplies, allowing them to interface directly to lower supply ADCs. They can also work with supplies as large as 36 V in industrial systems that require a wide common-mode input range.
- **Product Highlights**
- 1. Complete, precision laser wafer trimmed thermocouple signal conditioning system in a single IC package.
- 2. Flexible pinout provides for operation as a setpoint controller or as a standalone Celsius thermometer.
- 3. Rugged inputs withstand 4 kV ESD and provide over-voltage protection (OVP) up to VS ± 25 V.
- 4. Differential inputs reject common-mode noise on the thermocouple leads.
- 5. Reference pin voltage can be offset to measure 0°C on single supplies.
- 6. Available in a small, 8-lead MSOP that is fully RoHS compliant.
- **
- Applications*
- K type thermocouple temperature measurement
- Setpoint controller
- Celsius thermometer
- Universal cold junction compensator
- White goods (oven, stove top) temperature measurements
- Exhaust gas temperature sensing
- Catalytic converter temperature sensing
- ### Features and Benefits
- Low cost and easy to use
- Pretrimmed for K type thermocouples
- Internal cold junction compensation
- High impedance differential input
- Standalone 5 mV/°C thermometer
- Reference pin allows offset adjustment
- Thermocouple break detection
- See data sheet for additional features.
AD8497CRMZ Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Surface Mount |
| Number of Pins | 8 Pin |
| Case/Package | MSOP-8 |
| Supply Current | 250 µA |
| Number of Positions | 8 Position |
| Gain Bandwidth Product | 25 kHz |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage (Max) | 36 V |
| Supply Voltage (Min) | 2.7 V |
| Show | |
| Size-Length | 3.2 mm |
| Size-Width | 3.2 mm |
| Size-Height | 0.95 mm |
| Operating Temperature | 25℃ ~ 100℃ |
| Product Lifecycle Status | Active |
| Packaging | Tube |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
| REACH SVHC Compliance Edition | 2015/12/17 |
| ECCN Code | EAR99 |
Order guide
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- Delivery date: usually 2 to 7 working days.
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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