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589 / AD589JR / AD589 / two-terminal ic
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Please note: This spec sheet may cover several different parts.
* Superior Replacement for Other 1.2 V References
Wide Operating Range: 50 mA to 5 mA
* Low Power: 60 mW Total PD at 50 mA
* Low Temperature Coefficient: 10 ppm/8C max, 08C to +708C (AD589M) 25 ppm/8C max, –558C to +1258C (AD589U)
* Two-Terminal “Zener†Operation
* Low Output Impedance: 0.6 V
* No Frequency Compensation Required
The AD589 is a two-terminal, low cost, temperature compensated bandgap voltage reference which provides a fixed 1.23 V output voltage for input currents between 50 mA and 5.0 mA.
The high stability of the AD589 is primarily dependent upon the matching and thermal tracking of the on-chip components.
Analog Devices’ precision bipolar processing and thin-film technology combine to provide excellent performance at low cost.
Additionally, the active circuit produces an output impedance ten times lower than typical low-TC Zener diodes. This feature allows operation with no external components required to maintain full accuracy under changing load conditions.
1. The AD589 is a two-terminal device which delivers a constant reference voltage for a wide range of input current.
2. Output impedance of 0.6 W and temperature coefficients as low as 10 ppm/°C insure stable output voltage over a wide range of operating conditions.
3. The AD589 can be operated as a positive or negative reference. “Floating†operation is also possible.
4. The AD589 will operate with total current as low as 50 mA (60 mW total power dissipation), ideal for battery powered instrument applications.
5. The AD589 is an exact replacement for other 1.2 V references, offering superior temperature performance and reduced sensitivity to capacitive loading.
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