LT1492 Linear Technology, LT1492 Datasheet

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LT1492

Manufacturer Part Number
LT1492
Description
5MHz/ 3V/us/ Low Power Single Supply/ Dual and Quad Precision Op Amps
Manufacturer
Linear Technology
Datasheet

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APPLICATIONS
FEATURES
TYPICAL
Gain-Bandwidth Product: 5MHz Typ
Slew Rate: 3V/ s Typ
Low Supply Current per Amplifier: 0.55mA Max
Input Offset Voltage: 180 V Max
Input Offset Voltage Drift: 3 V/ C Max
Input Offset Current: 20nA Max
Input Bias Current: 100nA Max
Open-Loop Gain: 1500V/mV Min (V
Low Input Noise Voltage: 16.5nV/ Hz
Low Input Noise Current: 0.14pA/ Hz
Large Output Drive Current: 20mA Min
Single Supply Operation
Wide Supply Voltage Range: 2.5V to 36V
Specified on 3.3V, 5V and 15V
Dual in 8-Pin PDIP and SO Package
Quad in a Narrow 16-Pin SO Package
Battery-Powered Systems
Active Filters
Photodiode Amplifiers
DAC Current to Voltage Amplifiers
V
IN
Input Voltage Range Includes Ground
Output Swings to Ground While Sinking Current
Portable Instrumentation
Precision AC to DC Converter (Full Wave Rectifier and Filter)
10k
APPLICATION
+
1/2 LT1492
U
4.99k
5V
15k
U
6.49k
+
1/2 LT1492
S
= 15V)
V
< 1% ERROR FROM 100mV TO 1V, f = 1kHz
10% ERROR AT 10mV, f = 1kHz
1% ERROR AT 5kHz, V
10% ERROR AT 30kHz, V
10k
S
= 5V, 0V
10k
Single Supply, Dual and Quad
+
IN
= 100mV
IN
= 100mV
10 F
V
OUT
DESCRIPTION
The LT
ply precision op amps with 5MHz gain-bandwidth product,
3V/ s slew rate and only 450 A of quiescent supply current
per amplifier.
With a maximum input offset voltage of only 180 V, the
LT1492/LT1493 eliminate trims in most systems while pro-
viding high frequency performance not usually found in low
power single supply amplifiers.
The LT1492/LT1493 will operate on any supply greater than
2.5V and less than 36V total, and are specified on single 3.3V,
single 5V and 15V supplies. Even with their low quiescent
supply current the minimum output drive is 20mA, ideal for
driving low impedance loads.
The inputs can be driven beyond the supplies without
damage or phase reversal of the output. The low operating
voltage and wide input and output range make the LT1492/
LT1493 amplifiers ideal for battery-powered applications.
For applications requiring faster precision single supply
amplifiers, see the 14MHz, 7V/ s LT1211/LT1212, the
28MHz, 12V/ s LT1213/LT1214 or the 23MHz, 50V/ s
LT1215/LT1216.
RMS
DC
RMS
, LTC and LT are registered trademarks of Linear Technology Corporation.
5MHz, 3V/ s, Low Power
1492/93 TA01
®
1492/LT1493 are dual/quad, low power, single sup-
Precision Op Amps
U
50
40
10
OFFSET VOLTAGE DRIFT WITH TEMPERATURE ( V/ C)
30
20
0
– 2.5
V
LT1492 N8, S8 PACKAGES
LT1493 S16 PACKAGE
Distribution of Offset Voltage
S
– 2
= 5V, 0V
Drift with Temperature
–1.5
LT1492/LT1493
–1
– 0.5
0
0.5
1
1.5
1492/93 G02
2
2.5
1

Related parts for LT1492

LT1492 Summary of contents

Page 1

... The inputs can be driven beyond the supplies without damage or phase reversal of the output. The low operating voltage and wide input and output range make the LT1492/ LT1493 amplifiers ideal for battery-powered applications. For applications requiring faster precision single supply ...

Page 2

... Specified Temperature Range (Note 2) .....– Junction Temperature ........................................... 150 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER 1 OUT A 2 –IN A LT1492CN8 + LT1492CS8 + + – OUT B S8 PART MARKING NC 8 1492 16-LEAD PLASTIC SO ...

Page 3

... 2.5V to 12. 0.05V to 3.7V Output High, No Load Output High 1mA SOURCE Output High 15mA SOURCE Output Low, No Load Output Low 1mA SINK Output Low 15mA SINK LT1492/LT1493 MIN TYP MAX UNITS 175 350 V/mV 4.2 4.35 V 4.1 4.25 V 3.0 3.15 V 0.003 0.006 V 0.062 0.075 V 0.362 ...

Page 4

... LT1492/LT1493 5V ELECTRICAL CHARACTERISTICS V = 5V, 0V 0.5V 0.5V, – OUT SYMBOL PARAMETER V Input Offset Voltage OS V Input Offset Voltage Drift (Note Input Offset Current OS I Input Bias Current B Input Voltage Range CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio ...

Page 5

... SINK 85 C, unless otherwise noted. (Note 2) A CONDITIONS V = – 15V to 13. 16V 10V Output High 15mA SOURCE Output Low 15mA SINK LT1492/LT1493 MIN TYP MAX UNITS 160 550 120 nA 13.4 13.5 V – 15.0 – 15.1 ...

Page 6

... Note 1: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. Note 2: The LT1492/LT1493 are designed, characterized and expected to meet these extended temperature limits, but are not tested at – and 85 C. Guaranteed I grade parts are available. Consult factory. ...

Page 7

... W U TYPICAL PERFORMANCE CHARACTERISTICS Distribution of Input Offset Voltage 5V LT1492 N8, S8 PACKAGES 35 LT1493 S16 PACKAGE –200 –150 –100 – 100 150 200 INPUT OFFSET VOLTAGE ( V) 1492/93 G01 Voltage Gain, Phase vs Frequency 80 70 PHASE 15V S 50 ...

Page 8

... LT1492/LT1493 W U TYPICAL PERFORMANCE CHARACTERISTICS Undistorted Output Swing vs Frequency 15V – 15V 100k L DISTORTION 10k 100k FREQUENCY (Hz) 1492/93 G10 Open-Loop Gain OUTPUT (V) 1492/93 G13 Open-Loop Gain 15V ...

Page 9

... – 15V Large-Signal Response 1492/93 G26 V = 15V 5 s/DIV – LT1492/LT1493 5V Small-Signal Response 1492/93 G21 500ns/DIV 15V Small-Signal Response 1492/93 G24 500ns/DIV V = 15V Settling Time to 1mV vs Output Step 15V ...

Page 10

... LT1492/LT1493 W U TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Temperature 0.65 0. 15V 0.35 0.25 – 50 – 100 125 TEMPERATURE ( C) 1492/93 G28 Input Bias Current vs Temperature 5V – – 50 – 100 125 TEMPERATURE ( C) ...

Page 11

... There are no clamps across the inputs of the LT1492/ LT1493 and therefore each input can be forced to any voltage between the supplies. The input current will re- main constant at about 50nA over most of this range ...

Page 12

... When operating the LT1492/LT1493 on a single 3. supply, the output interfaces directly with most TTL and CMOS logic. The response time of the LT1492/LT1493 is a strong function of the amount of input overdrive as shown in the following photos. These amplifiers are unity-gain stable op amps and not fast comparators, therefore, the logic being driven may oscillate due to the long transition time ...

Page 13

... TA07 LT1492/LT1493 I 6 BIAS Q13 Q14 Q15 Q12 Q16 1492/ Voltage-Controlled Current Sink + OUT + IN 100 1/2 Si9410DY LT1492 N-CHANNEL – 100pF OUT 1 t < 1492/93 TA06 + V OUT – ...

Page 14

... LT1492/LT1493 PACKAGE DESCRIPTION 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.025 0.325 –0.015 +0.635 8.255 –0.381 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) 0.010 – 0.020 45 (0.254 – ...

Page 15

... DWG # 05-08-1610 0.228 – 0.244 (5.791 – 6.197 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LT1492/LT1493 0.386 – 0.394* (9.804 – 10.008 0.150 – 0.157** (3.810 – 3.988 0.004 – ...

Page 16

... FAX: (408) 434-0507 TELEX: 499-3977 www.linear-tech.com + 5.23k 47pF V 5.23k 10.2k – V 1/2 LT1492 1000pF + 1492/93 TA03 COMMENTS High DC Accuracy, 10 GBW, 1V/ s Slew Rate, Max Supply Current 2.2mA Input Common Mode Includes Ground, 275 Max Drift, Max Supply Current 1.8mA per Amplifier Input Common Mode Includes Ground, 275 Max Drift, Max Supply Current 3 ...

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