Datasheet for AD652SQ:
- Manufacturer Part Number : AD652SQ
- Manufacturer : AD
- Description : Monolithic Synchronous Voltage-to-Frequency Converter IC
- Series : AD652
- Reference Price : USD 22.896
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- Product Type : Integrated/Special Purpose A/D Converters
- Function : Voltage to Frequency Converters
- Current Suggest : Not Recommended for New Designs
- Status : Production
- ROHS Status : NON-ROHS Leaded
- Package Type : 16-Lead CerDIP
- Pins : 16
- MFG Package Case : Q-16
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 25
- Working Temperature : -55 to 125C
- Other Part Number : AD652SQ
- 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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- Full-Scale Frequency (up to 2 MHz) set by external system clock
- Extremely low linearity error (0.005% max at 1 MHz FS, 0.02% max at 2 MHz FS)
- No critical external components required
- Accurate 5V reference voltage
- Low drift (25 ppm/°C max)
- Dual- or single-supply operation
- Voltage or current input
- MIL-STD-883 compliant versions available
The AD652 uses a variation of the popular charge-balancing technique to perform the conversion function. The AD652 uses an external clock to define the full-scale output frequency, rather than relying on the stability of an external capacitor. The result is a more stable, more linear transfer function, with significant application benefits in both single and multichannel systems.
Gain drift is minimized using a precision low drift reference and low TC on-chip thin-film scaling resistors. Furthermore, the initial gain error is reduced to less than 0.5% by the use of laser-wafer-trimming.
The analog and digital sections of the AD652 have been designed to allow operation from a single-ended power source, simplifying its use with isolated power supplies.
The AD652 is available in five performance grades. The 20-pin PLCC packaged JP and KP grades are specified for operation over the 0°C to +70°C commercial temperature range. The 16- pin cerdip-packaged AQ and BQ grades are specified for operation over the -40°C to +85°C industrial temperature range, and the AD652SQ is available for operation over the full -55°C to +125°C extended temperature range.
This designates products ADI does not recommend broadly for new designs.