LT1636 Linear Technology, LT1636 Datasheet

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LT1636

Manufacturer Part Number
LT1636
Description
Over-The-Top Micropower Rail-to-Rail Input and Output Op Amp
Manufacturer
Linear Technology
Datasheet

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Rail-to-Rail Input and Output
Micropower: 50 A I
MSOP Package
Over-The-Top
Extends 44V Above V
Low Input Offset Voltage: 225 V 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
Battery- or Solar-Powered Systems
Supply Current Sensing
Battery Monitoring
MUX Amplifiers
4mA to 20mA Transmitters
Portable Instrumentation
Sensor Conditioning
SHDN
Over-The-Top Current Source with Shutdown
R*
+
LT1636
*OPTIONAL FOR LOW OUTPUT CURRENTS
TM
: Input Common Mode Range
U
LT1004-1.2
Q
EE
, 44V Supply
, Independent of V
1M
U
I
OUT
J176
R
I
e.g., 10mA = 120
OUT
4V TO
44V
=
1.2
R
CC
1636 TA01
Input and Output Op Amp
DESCRIPTIO
The LT
with a total voltage of 2.7V to 44V drawing less than 50 A of
quiescent current. The LT1636 can be shut down, making the
output high impedance and reducing the quiescent current to
4 A. 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 0.22 F and 150 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
44V above V
The LT1636 op amp is available in the 8-pin MSOP, PDIP and
SO packages.
Over-The-Top is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
Micropower Rail-to-Rail
1636 op amp operates on all single and split supplies
Input Bias Current vs Common Mode Voltage
5000
3000
1000
–10
40
30
20
10
EE
0
4.0
, independent of V
V
S
= 5V, 0V
T
A
4.4
COMMON MODE VOLTAGE (V)
= – 55 C
U
T
A
T
= 25 C
4.8
A
= 125 C
Over-The-Top
5.2 10 20 30 40
CC
.
1636 G03
50
LT1636
EE
1
or

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LT1636 Summary of contents

Page 1

... There is no phase reversal of the output for inputs 5V below V 44V above V The LT1636 op amp is available in the 8-pin MSOP, PDIP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. Over-The-Top is a trademark of Linear Technology Corporation. ...

Page 2

... 0.1Hz to 10Hz f = 1kHz f = 1kHz ORDER PART TOP VIEW NUMBER 8 NULL LT1636CN8 + 7 V LT1636CS8 6 OUT LT1636IN8 5 SHDN LT1636IS8 N8 PACKAGE S8 PART MARKING S8 PACKAGE 1636 = 130 C/ W (N8 190 C/ W (S8) JA 1636I = 25 C unless otherwise noted. (Note 3) A MIN TYP MAX 50 225 ...

Page 3

... PIN5 5V 10k PIN5 1kHz – – – LT1636 MIN TYP MAX UNITS 110 200 1300 V/mV ...

Page 4

... LT1636 15V ELECTRICAL CHARACTERISTICS V = 15V 0V 0V, Pin 5 = open OUT SYMBOL PARAMETER V Input Offset Voltage OS Input Offset Voltage Drift (Note 8) I Input Offset Current OS I Input Bias Current B Input Noise Voltage e Input Noise Voltage Density n i Input Noise Current Density ...

Page 5

... Note 2: A heat sink may be required to keep the junction temperature below absolute maximum. Note 3: The LT1636C is guaranteed to meet specified performance from and is designed, characterized and expected to meet these extended temperature limits, but is not tested at –40 C and 85 C. The LT1636I is guaranteed to meet the extended temperature limits ...

Page 6

... LT1636 W U TYPICAL PERFOR A CE CHARACTERISTICS 0.1Hz to 10Hz Noise Voltage TIME (SEC) 1636 G07 Open-Loop Gain and Phase Shift vs Frequency 2. PHASE 30 20 GAIN 10 0 –10 –20 –30 1k 10k 100k 1M FREQUENCY (Hz) 1636 G10 ...

Page 7

... FREQUENCY (Hz) 1636 G20 Total Harmonic Distortion + Noise vs Output Voltage R = 10k HALF SUPPLY 1kHz A = – 1. 1. – 3V 3V OUTPUT VOLTAGE (V ) P-P 1636 G23 LT1636 = 1 10k 100k 1635 G18 1k 10k 1636 G21 7 ...

Page 8

... When monitoring voltages within 100mV the PNP should be taken to keep the output from clipping. The output of the LT1636 can be pulled up to 27V beyond + V with less than 1nA of leakage current, provided that V is less than 0.5V. ...

Page 9

... U returned to ground. The typical performance photo of Open-Loop Gain for various loads shows the details. Shutdown The LT1636 can be shut down two ways: using the shutdown pin or bringing V is brought to within 0. output leakage current drop to less than 1nA. When the shutdown pin is brought 1.2V above V ...

Page 10

... OUT 1636 TA05 Optional Output Compensation for Capacitive Loads Greater Than 200pF + V IN LT1636 C – L 0.22 F 150 1636 TA09 Q13 Q10 Q14 Q15 1k Q11 Q12 Q16 D4 D5 NULL 1 MUX Amplifier Waveforms ...

Page 11

... Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.053 – 0.069 0.004 – 0.010 (1.346 – 1.752) (0.101 – 0.254) 0.050 0.014 – 0.019 (0.355 – 0.483) (1.270) TYP LT1636 0.118 0.004* (3.00 0.102 0.118 0.004** 0.192 0.004 (3.00 0.102) (4.88 0.10) MSOP (MS8) 1197 4 ...

Page 12

... V V 120 44V – LT1636 V = 1.25V OUT I 10mA OUT + 1N5711 1M LT1634-1.25 1636 TA04 Over-The-Top Current Sense R1 200 LT1636 V – OUT (0V TO 4.3V) I LOAD OUT I = LOAD (R )(R2/R1) 1636 TA08 S , Gain Bandwidth = 120kHz OS(MAX) , Gain Bandwidth = 200kHz OS(MAX) , 1.5 A Supply Current Max ...

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