LT1636_15 Datasheet, PDF (1/16 Pages) Linear Technology – Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp

FEATURES
■ _{Rail-to-Rail Input and Output}
■ _{Micropower: 50µA IQ, 44V Supply}
■ _{Operating Temperature Range: – 40°C to 125°C}
■ _Over-The-Top^®_{: Input Common Mode Range}
Extends 44V Above V_EE, Independent of V_CC
■ _{Low Input Offset Voltage: 225µV Max}
■ _{Specified on 3V, 5V and ±15V Supplies}
■ _{High Output Current: 18mA}
■ _{Output Shutdown}
■ _{Output Drives 10,000pF with Output Compensation}
■ _{Reverse Battery Protection to 27V}
■ _{High Voltage Gain: 2000V/mV}
■ _{High CMRR: 110dB}
■ _{220kHz Gain-Bandwidth Product}
■ _{8-Lead DFN, MSOP, PDIP and SO Packages}
U
APPLICATIO S
■ _{Battery- or Solar-Powered Systems}
Portable Instrumentation
Sensor Conditioning
■ _{Supply Current Sensing}
■ _{Battery Monitoring}
■ _{MUX Amplifiers}
■ _{4mA to 20mA Transmitters}
TYPICAL APPLICATIO
Over-The-Top Current Source with Shutdown
LT1004-1.2
R*
1M
4V TO
44V
R
SHDN
+
LT1636
–
TPO610
I_OUT
=
1.2
R
I_OUT e.g., 10mA = 120Ω
*OPTIONAL FOR LOW OUTPUT CURRENTS
1636 TA01
LT1636
Over-The-Top
Micropower Rail-to-Rail
Input and Output Op Amp
DESCRIPTIO
The LT^®1636 op amp operates on all single and split supplies
with a total voltage of 2.7V to 44V drawing less than 50µA of
quiescent current. The LT1636 can be shut down, making the
output high impedance and reducing the quiescent current to
4µA. The LT1636 has a unique input stage that operates and
remains high impedance when above the positive supply. The
inputs take 44V both differential and common mode, even
when operating on a 3V supply. The output swings to both
supplies. Unlike most micropower op amps, the LT1636 can
drive heavy loads; its rail-to-rail output drives 18mA. The
LT1636 is unity-gain stable into all capacitive loads up to
10,000pF when a 0.22µF and 150Ω compensation network
is used.
The LT1636 is reverse supply protected: it draws no current
for reverse supply up to 27V. Built-in resistors protect the
inputs for faults below the negative supply up to 22V. There
is no phase reversal of the output for inputs 5V below V_EE or
44V above V_EE, independent of V_CC.
The LT1636 op amp is available in the 8-pin MSOP, PDIP and
SO packages. For space limited applications the LT1636 is
available in a 3mm × 3mm × 0.8mm dual fine pitch leadless
package (DFN).
Over-The-Top is a registered trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Input Bias Current vs Common Mode Voltage
5000
V_S = 5V, 0V
3000
1000
40
30
20
10
0
– 10
4.0
T_A = – 55°C
T_A = 125°C
T_A = 25°C
4.4 4.8 5.2 10 20 30 40 50
COMMON MODE VOLTAGE (V)
1636 G03
1636fc
1