AD780BRZ-REEL7

The AD780 is an ultrahigh precision band gap reference voltage
that 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 analog-to-digital converters (ADCs) and digital-toanalog converters (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 µF bypass capacitor is used on the supply.
A temperature output pin on the AD780 provides an output voltage
that varies linearly with temperature, allowing the part 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 PDIP and SOIC
packages. The AD780AN, AD780AR, AD780BN, AD780BR, and
AD780CR are specified for operation from −40°C to +85°C.