Datasheet
AD780–SPECIFICATIONS
AD780AN/AR AD780CR AD780BN/BR
Parameter Min Typ Max Min Typ Max Min Typ Max Unit
OUTPUT VOLTAGE
2.5 V Out 2.495 2.505 2.4985 2.5015 2.499 2.501 Volts
3.0 V Out 2.995 3.005 2.9950 3.0050 2.999 3.001 Volts
OUTPUT VOLTAGE DRIFT
1
–40°C to +85°C 7 7 3 ppm/°C
–55°C to +125°C 20 20 ppm/°C
LINE REGULATION
2.5 V Output, 4 V ≤ +V
IN
≤ 36 V
T
MIN
to T
MAX
10 * * µV/V
3.0 V Output, 4.5 V ≤ +V
IN
≤ 36 V
T
MIN
to T
MAX
10 * * µV/V
LOAD REGULATION, SERIES MODE
Sourcing 0 < I
OUT
< 10 mA 50 * * µV/mA
T
MIN
to T
MAX
75 * * µV/mA
Sinking –10 < I
OUT
< 0 mA 75 * * µV/mA
–40°C to +85°C75**µV/mA
–55°C to +125°C 150 * * µV/mA
LOAD REGULATION, SHUNT MODE
I < I
SHUNT
< 10 mA 75 * * µV/mA
QUIESCENT CURRENT, 2.5 V SERIES MODE
2
–40°C to +85°C 0.75 1.0 * * * * mA
–55°C to +125°C 0.8 1.3 * * * * mA
MINIMUM SHUNT CURRENT 0.7 1.0 * * * * mA
OUTPUT NOISE
0.1 Hz to 10 Hz 4 * * * * µV p-p
Spectral Density, 100 Hz 100 * * * * nV/√Hz
LONG TERM STABILITY
3
20 * * ±ppm/
1000 Hr
TRIM RANGE 4.0 * * ± %
TEMPERATURE PIN
Voltage Output @ 25°C 500 560 620 * * * * * * mV
Temperature Sensitivity 1.9 * * mV/°C
Output Resistance 3 * * kΩ
SHORT CIRCUIT CURRENT TO GROUND 30 * * mA
TEMPERATURE RANGE
Specified Performance (A, B, C) –40 +85 * * * * °C
Operating Performance (A, B, C)
4
–55 +125 * * * * °C
Specified Performance (S) –55 +125 * * * * °C
Operating Performance (S) –55 +125 * * * * °C
NOTES
1
Maximum output voltage drift is guaranteed for all packages.
2
3.0 V mode typically adds 100 µA to the quiescent current. Also, Iq increases by 2 µA/V above an input voltage of 5 V.
3
The long term stability specification is noncumulative. The drift in subsequent 1000 hr. periods is significantly lower than in the first 1000 hr. period.
4
The operating temperature range is defined as the temperature extremes at which the device will still function. Parts may deviate from their specified performance
outside their specified temperature range.
*Same as AD780AN/AR specification.
Specifications subject to change without notice.
REV. B
–2–
(T
A
= +25C, V
IN
= +5 V unless otherwise noted)