AD694AQ

AD694 is a monolithic current transmitter. The input signal is buffered by an input amplifier that can be used to scale the input signal or buffer the output from a current mode DAC. The output stage compliance extends to within 2V of VS and its special design allows the output voltage to extend below common in dual supply operation. An alarm warns of an open 4–20 mA loop or noncompliance of the output stage. Active laser trimming of the device thin film resistors results in high levels of accuracy without the need for additional adjustments and calibration. An external pass transistor may be used with the device to off-load power dissipation, extending the temperature range of operation.

• Input voltage range is VS –2V typ
• Wide power supply range is 4.5V to 36V
• Wide output compliance
• Input buffer amplifier
• Optional external pass transistor to reduce self-heating errors
• Nonlinearity is 0.005% typ
• Single or dual supply operation, operating temperature is –40°C to +85°C
• Precision voltage reference programmable to 2.000V or 10.000V
• Initial offset voltage is ±150µV
• Packaging style is 16-lead ceramic DIP-glass hermetic seal package [CERDIP]

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party