LT1351 Linear Technology, LT1351 Datasheet

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LT1351

Manufacturer Part Number
LT1351
Description
250uA/ 3MHz/ 200V/us Operational Amplifier
Manufacturer
Linear Technology
Datasheet

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FEATURES
APPLICATIONS
TYPICAL
V
+
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102
TRIM R5 FOR GAIN
TRIM R1 FOR COMMON MODE REJECTION
BW = 30kHz
IN
3MHz Gain Bandwidth
200V/ s Slew Rate
250 A Supply Current
Available in Tiny MSOP Package
C-Load
Unity-Gain Stable
Power Saving Shutdown Feature
Maximum Input Offset Voltage: 600 V
Maximum Input Bias Current: 50nA
Maximum Input Offset Current: 15nA
Minimum DC Gain, R
Input Noise Voltage: 14nV/ Hz
Settling Time to 0.1%, 10V Step: 700ns
Settling Time to 0.01%, 10V Step: 1.25 s
Minimum Output Swing into 1k: 13V
Minimum Output Swing into 500 : 3.4V
Specified at 2.5V, 5V and 15V
Battery-Powered Systems
Wideband Amplifiers
Buffers
Active Filters
Data Acquisition Systems
Photodiode Amplifiers
50k
R1
TM
Op Amp Drives All Capacitive Loads
APPLICATION
+
LT1351
Instrumentation Amplifier
R2
5k
U
L
1.1k
R5
= 2k: 30V/mV
R3
5k
U
+
LT1351
50k
R4
1351 TA01
V
OUT
The LT
operational amplifier with outstanding AC and DC perfor-
mance. The LT1351 features lower supply current, lower
input offset voltage, lower input bias current and higher
DC gain than devices with comparable bandwidth. The
circuit combines the slewing performance of a current
feedback amplifier in a true operational amplifier with
matched high impedance inputs. The high slew rate en-
sures that the large-signal bandwidth is not degraded. The
amplifier is a single gain stage with outstanding settling
characteristics which make the circuit an ideal choice for
data acquisition systems. The output drives a 1k load to
supplies. The amplifier is also stable with any capacitive
load which makes it useful in buffer or cable driver
applications.
The LT1351 is a member of a family of fast, high perfor-
mance amplifiers using this unique topology and employ-
ing Linear Technology Corporation’s advanced
complementary bipolar processing. For dual and quad
amplifier versions of the LT1351 see the LT1352/LT1353
data sheet. For higher bandwidth devices with higher
supply current see the LT1354 through LT1365 data sheets.
Singles, duals and quads of each amplifier are available.
C-Load is a trademark of Linear Technology Corporation.
DESCRIPTION
13V with 15V supplies and a 500 load to 3.4V on 5V
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1351 is a low power, high speed, high slew rate
250 A, 3MHz, 200V/ s
Operational Amplifier
A
V
= –1
Large-Signal Response
U
1351 TA02
LT1351
1

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LT1351 Summary of contents

Page 1

... The amplifier is also stable with any capacitive load which makes it useful in buffer or cable driver applications. The LT1351 is a member of a family of fast, high perfor- mance amplifiers using this unique topology and employ- ing Linear Technology Corporation’s advanced complementary bipolar processing. For dual and quad amplifier versions of the LT1351 see the LT1352/LT1353 data sheet ...

Page 2

... CONDITIONS f = 10kHz f = 10kHz V = 12V CM Differential V = 12V 2. 0. 2.5V to 15V S ORDER PART TOP VIEW NUMBER NULL 8 + LT1351CN8 7 V LT1351CS8 6 V OUT 5 SHDN S8 PART MARKING S8 PACKAGE 8-LEAD PLASTIC SO 1351 = 130 C/ W (N8 190 MIN TYP MAX SUPPLY 15V 0.2 0.6 5V 0.2 0.6 2.5V 0.3 0.8 2.5V to 15V ...

Page 3

... Step, 0.01 – Step, 0.1 – Step, 0.01 – 20kHz V SHDN = V + 0.1V EE SHDN = V CC SHDN = V + 0.1V EE CONDITIONS V SUPPLY (Note 5) 2.5V to 15V 2.5V to 15V 2.5V to 15V LT1351 MIN TYP MAX 15V 40 80 15V 30 60 15V 2. 15V 13.5 14 ...

Page 4

... LT1351 ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CMRR Common Mode Rejection Ratio PSRR Power Supply Rejection Ratio A Large-Signal Voltage Gain VOL V Output Swing OUT I Output Current OUT I Short-Circuit Current SC SR Slew Rate GBW Gain Bandwidth I Shutdown Input Current SHDN I Supply Current S – unless otherwise noted (Note 6) ...

Page 5

... Note 4: Full-power bandwidth is calculated from the slew rate measurement: FPBW = (Slew Rate)/2 V Note 5: This parameter is not 100% tested. Note 6: The LT1351 is designed, characterized and expected to meet these extended temperature limits, but is not tested at – and Guaranteed I grade parts are available; consult factory. ...

Page 6

... LT1351 W U TYPICAL PERFORMANCE CHARACTERISTICS Input Bias Current vs Temperature 15V – 125 –50 – 100 TEMPERATURE ( C) 1351 G04 Open-Loop Gain vs Temperature 100 V = 15V 12V – ...

Page 7

... Power Supply Rejection Ratio vs Frequency 50 120 48 100 – PSRR = +PSRR 10k 100k 100 FREQUENCY (Hz) LT1351 Frequency Response vs Capacitive Load 15V – 500pF 100pF 10pF –2 – ...

Page 8

... LT1351 W U TYPICAL PERFORMANCE CHARACTERISTICS Slew Rate vs Supply Voltage 200 – – ( )/2 150 100 SUPPLY VOLTAGE ( V) 1351 G22 Total Harmonic Distortion vs Frequency 15V P-P 0.1 0. –1 ...

Page 9

... Layout and Passive Components The LT1351 amplifier is easy to apply and tolerant of less than ideal layouts. For maximum performance (for ex- ample fast settling time) use a ground plane, short lead lengths and RF-quality bypass capacitors (0. 0.1 F). For high drive current applications use low ESR bypass capacitors ( tantalum) ...

Page 10

... Handling and the transient response photos clearly show these effects. Input Considerations Each of the LT1351 inputs is the base of an NPN and a PNP transistor whose base currents are of opposite polarity and provide first-order bias current cancellation. Because of variation in the matching of NPN and PNP beta, the polarity of the input bias current can be positive or negative ...

Page 11

... Q2 Q4 Q13 C Q15 Q14 20kHz, 4th Order Butterworth Filter 4.64k 470pF – 5.49k 11.3k LT1351 + 4700pF R2 R3 Q12 Q20 Q21 C1 R6 Q19 C Q17 OUTPUT Q18 R7 Q22 C2 T Q16 Q23 Q24 R4 R5 5.49k 220pF – V LT1351 OUT + 1351 TA03 LT1351 1351 SS 11 ...

Page 12

... LT1351 U TYPICAL APPLICATIONS INPUTS Shutdown Circuit 3 + LT1351 2 – 1N4148 SHDN SST177 DAC I-to-V Converter 10pF 12 5k DAC – LT1351 565A TYPE + V 5k OUT + I ( < 0.5LSB OS A VOL SST177 D – V 1351 TA04 V OUT 1351 TA05 ...

Page 13

... Dimensions in inches (millimeters) unless otherwise noted. MS8 Package 8-Lead Plastic MSOP (LTC DWG # 05-08-1660) 0.118 0.004* (3.00 0.102) 0.192 0.004 (4.88 0.10) 1 0.040 0.006 (1.02 0.15) 0 – 6 TYP SEATING PLANE 0.012 (0.30) 0.0256 REF (0.65) TYP LT1351 0.118 0.004** (3.00 0.102 0.034 0.004 (0.86 0.102) 0.006 0.004 (0.15 0.102) MSOP (MS8) 1197 13 ...

Page 14

... LT1351 PACKAGE DESCRIPTION 0.300 – 0.325 (7.620 – 8.255) 0.009 – 0.015 (0.229 – 0.381) +0.035 0.325 –0.015 +0.889 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 Dimensions in inches (millimeters) unless otherwise noted. ...

Page 15

... Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 8 0.228 – 0.244 (5.791 – 6.197) 1 0.053 – 0.069 (1.346 – 1.752) 0 – 8 TYP 0.014 – 0.019 (0.355 – 0.483) LT1351 0.189 – 0.197* (4.801 – 5.004 0.150 – 0.157** (3.810 – 3.988 0.004 – ...

Page 16

... McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com Low Power Sample-and-Hold – – LTC201 LT1351 + LT1351 + 2000pF DROOP: 20nA/2000pF = 10mV/ms ACQUISITION TIME: 10V, 0. CHARGE INJECTION ERROR: 8pC/2000pF = 4mV COMMENTS Good DC Precision, Stable with All Capacitive Loads Good DC Precision, Stable with All Capacitive Loads ...

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