LT1635_15 Datasheet, PDF (1/12 Pages) Linear Technology – Micropower Rail-to-Rail Op Amp and Reference

FEATURES
s _{Guaranteed Operation at 1.2V}
s _{Op Amp and Reference on Single Chip}
s _{Micropower: 130µA Supply Current}
s _{Industrial Temperature Range SO-8 Packages}
s _{Rail-to-Rail Output}
s _{High Output Current: 20mA Min}
s _{Output Drives 1000pF}
s _{Capable of Floating Mode Operation}
s _{Specified for 5V and ±5V Supplies}
s _{Low Reference Drift: 30ppm/°C}
s _{Industry Standard LM10 Pinout}
U
APPLICATIO S
s _{Battery- or Solar-Powered Systems}
Portable Instrumentation
Sensor Conditioning
s _{Precision Current Regulators}
s _{Precision Voltage Regulators}
s _{Battery Level Indicator}
s _{Thermocouple Transmitter}
TYPICAL APPLICATIO
0V to 5V Regulator
C1
0.01µF
R1
V_IN > 5.2V
100k
2– 7
6
LT1635
3+
4
R2
8
3.9k
1
V_OUT
0V TO 5V
V_OUT
ADJ
R3
5k
1635 TA01
LT1635
Micropower Rail-to-Rail
Op Amp and Reference
DESCRIPTIO
The LT^®1635 is a new analog building block that includes a
rail-to-rail output op amp, a precision reference and reference
buffer. The device operates from supplies as low as a single
1.2V or up to ±5V, yet it consumes only 130µA of supply
current.
The input common mode range of the op amp includes
ground and incorporates phase reversal protection to pre-
vent false outputs from occurring when the input is below
the negative supply. The rail-to-rail output stage can swing to
within 15mV of each rail with no load and can swing to within
250mV of each rail while delivering 10mA of output current.
The gain bandwidth of the op amp is 175kHz and it is unity-
gain stable with up to 1000pF load capacitance.
The 0.2V reference is referred to V ^– and includes a buffer
amplifier to enhance flexibility. The reference and buffer
combine to achieve a drift of 30ppm/°C, a line regulation of
20ppm/V and a load regulation of 150ppm/mA.
The LT1635 is available in 8-pin PDIP and SO packages, and
has the industry standard LM10 pinout.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Typical Distribution of Input Offset Voltage
25
V_S = 5V, 0V
T_A = 25°C
20
15
10
5
0
– 1.0
– 0.6 – 0.2 0.2 0.6 1.0
INPUT OFFSET VOLTAGE (mV)
1635 TA02
1