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MFG:ADI D/C:09
Part Number: AD780
MFG: ADI
D/C: 09
Description: The AD780 is an ultrahigh precision bandgap reference voltage which provides a 2.5 V or 3.0 V output from inputs betwee...
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AD780
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DataSheet
General Description
AD780 General Description
The AD780 is an ultrahigh precision bandgap reference voltage which provides a 2.5 V or 3.0 V output from inputs between 4.0 V and 36 V. Low initial error and temperature drift combined with low output noise and the ability to drive any value of capacitance make the AD780 the ideal choice for enhancing the performance of high resolution ADCs and DACs and for any general purpose precision reference application. A unique low headroom design facilitates a 3.0 V output from a 5.0 V ± 10% input, providing a 20% boost to the dynamic range of an ADC, over performance with existing 2.5 V references.
The AD780 can be used to source or sink up to 10 mA and can be used in series or shunt mode, thus allowing positive or negative output voltages without external components. This makes it suitable for virtually any high performance reference application. Unlike some competing references, the AD780 has no "region of possible instability." The part is stable under all load conditions when a 1 F bypass capacitor is used on the supply.
A temperature output pin is provided on the AD780. This provides an output voltage that varies linearly with temperature, allowing the AD780 to be configured as a temperature transducer while providing a stable 2.5 V or 3.0 V output. The AD780 is a pin-compatible performance upgrade for the LT1019(A)2.5 and the AD680. The latter is targeted toward low power applications.
The AD780 is available in three grades in plastic DIP, SOIC, and cerdip packages. The AD780AN, AD780AR, AD780BN, AD780BR, and AD780CR are specified for operation from 40°C to +85°C.
AD780 Maximum Ratings
VIN to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 V
Trim Pin to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Temp Pin to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Power Dissipation (25°C) . . . . . . . . . . . . . . . . . . . . . . . . . 500 mW
Storage Temperature . . . . . . . . . . . . . . . . . . . . .65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . . . . .300°C
Output Protection: Output safe for indefinite short to ground
and momentary short to VIN.
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . .Class 1 (1000 V)
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any conditions above those indicated in the operational specification is not implied. Exposure to absolute maximum specifications for extended periods may affect device reliability.
Trim Pin to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Temp Pin to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Power Dissipation (25°C) . . . . . . . . . . . . . . . . . . . . . . . . . 500 mW
Storage Temperature . . . . . . . . . . . . . . . . . . . . .65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . . . . .300°C
Output Protection: Output safe for indefinite short to ground
and momentary short to VIN.
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . .Class 1 (1000 V)
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any conditions above those indicated in the operational specification is not implied. Exposure to absolute maximum specifications for extended periods may affect device reliability.
AD780 Features
Pin-Programmable 2.5 V or 3.0 V Output
Ultralow Drift: 3 ppm/max
High Accuracy: 2.5 V or 3.0 V ±1 mV max
Low Noise: 100 nV/Hz
Noise Reduction Capability
Low Quiescent Current: 1 mA max
Output Trim Capability
Plug-In Upgrade for Present References
Temperature Output Pin
Series or Shunt Mode Operation (±2.5 V, ±3.0 V)
Ultralow Drift: 3 ppm/max
High Accuracy: 2.5 V or 3.0 V ±1 mV max
Low Noise: 100 nV/Hz
Noise Reduction Capability
Low Quiescent Current: 1 mA max
Output Trim Capability
Plug-In Upgrade for Present References
Temperature Output Pin
Series or Shunt Mode Operation (±2.5 V, ±3.0 V)
AD780 Connection Diagram
AD780
PDF/DataSheet Download
- Datasheet: AD780
- File Size: 192759 KB
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