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Details, datasheet, quote on part number:LM725
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| Part: | LM725 |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers => General Purpose |
| Description: | LM725 - Operational Amplifier, Package: TO-5, Pin Nb=8 |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LM725 datasheet File size : 518 kB |
| Request For quote: | Find where to buy LM725
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Datasheet text preview:
LM725 Operational Amplifier
August 2000
LM725 Operational Amplifier
General Description
The LM725/LM725A/LM725C are operational amplifiers featuring superior performance in applications where low noise, low drift, and accurate closed-loop gain are required. With high common mode rejection and offset null capability, it is especially suited for low level instrumentation applications over a wide supply voltage range. The LM725A has tightened electrical performance with higher input accuracy and like the LM725, is guaranteed over a -55°C to +125°C temperature range. The LM725C has slightly relaxed specifications and has its performance guaranteed over a 0°C to 70°C temperature range.
Features
n n n n n n n n n High open loop gain 3,000,000 Low input voltage drift 0.6 µV/°C High common mode rejection 120 dB Low input noise current 0.15 pA/Hz Low input offset current 2 nA High input voltage range ± 14V Wide power supply range ± 3V to ± 22V Offset null capability Output short circuit protection
Connection Diagram
Metal Can Package
Typical Applications
Thermocouple Amplifier
DS010474-1
Order Number LM725H/883, LM725CH or LM725AH/883 See NS Package Number H08C Dual-In-Line Package
DS010474-10
DS010474-2
Order Number LM725CN See NS Package Number N08E
© 2000 National Semiconductor Corporation
DS010474
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LM725
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Internal Power Dissipation (Note 2) Differential Input Voltage Input Voltage (Note 3) Storage Temperature Range
Lead Temperature (Soldering, 10 Sec.) Maximum Junction Temperature Operating Temperature Range LM725 LM725A LM725C TA(MIN) -55°C -55°C 0°C to to to
260°C 150°C TA(MAX) +125°C +125°C +70°C
± 22V
500 mW ± 5V ± 22V -65°C to +150°C
Electrical Characteristics (Note 4)
Parameter Input Offset Voltage (Without External Trim) Input Offset Current Input Bias Current Input Noise Voltage Conditions Min TA = 25°C, RS 10 k TA = 25°C TA = 25°C TA = 25°C fo = 10 Hz fo = 100 Hz fo = 1 kHz Input Noise Current TA = 25°C fo = 10 Hz fo = 100 Hz fo = 1 kHz Input Resistance Input Voltage Range Large Signal Voltage Gain Common-Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing TA = 25°C TA = 25°C TA = 25°C, RL 2 k, VOUT = ± 10V TA = 25°C, RS 10 k TA = 25°C, RS 10 k TA = 25°C, RL 10 k RL 2 k Power Consumption Input Offset Voltage (Without External Trim) Average Input Offset Voltage Drift (Without External Trim) Average Input Offset Voltage Drift (With External Trim) Input Offset Current Average Input Offset Current Drift Input Bias Current TA = TMAX TA = TMIN
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LM725A Typ Max 0.5 2.0 42 15 9.0 8.0 1.0 0.3 0.15 1.5 5.0 80 Min
LM725 Typ Max 0.5 2.0 42 15 9.0 8.0 1.0 0.3 0.15 1.5 1.0 20 100 Min
LM725C Typ Max 0.5 2.0 42 15 9.0 8.0 1.0 0.3 0.15 1.5 2.5 35 125
Units mV nA nA nV/Hz nV/Hz nV/Hz pA/Hz pA/Hz pA/Hz M V V/mV dB 35 µV/V
± 13.5
1000 120
± 14
3000
± 13.5
1000 110
± 14
3000 120 2.0 10
± 13.5
250 94
± 14
3000 120 2.0
2.0
5.0
± 12.5 ± 12.0
± 13.5 ± 13.5
80 105 0.7
± 12 ± 10
± 13.5 ± 13.5
80 105 1.5
± 12 ± 10
± 13.5 ± 13.5
80 150 3.5
V V mW mV
TA = 25°C RS 10 k RS = 50
2.0 RS = 50 0.6 TA = TMAX TA = TMIN 1.2 7.5 35 20 80 1.0 4.0 18.0 90 70 180
2
2.0
5.0
2.0
µV/°C
0.6 1.2 7.5 35 20 80 20 40 150 100 200
0.6 1.2 4.0 10 125 250 35 50
µV/°C nA nA pA/°C nA nA
LM725
Electrical Characteristics (Note 4)
Parameter Large Signal Voltage Gain Conditions Min R L 2 k TA = TMAX RL 2 k TA = TMIN Common-Mode Rejection Ratio Power Supply Rejection Ratio Output Voltage Swing RL 2 k RS 10 k RS 10 k
(Continued) LM725 Min 1,000,000 250,000 100 8.0 20 Typ Max Min 125,000 125,000 115 20 LM725C Typ Max V/V V/V dB µV/V V Units
LM725A Typ Max
1,000,000 500,000 110
± 12
± 10
± 10
Note 1: "Absolute Maximum Ratings" indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Note 2: Derate at 150°C/W for operation at ambient temperatures above 75°C. Note 3: For supply voltages less than ± 22V, the absolute maximum input voltage is equal to the supply voltage. Note 4: These specifications apply for VS = ± 15V unless otherwise specified. Note 5: For Military electrical specifications RETS725AX are available for LM725AH and RETS725X are available for LM725H.
Schematic Diagram
DS010474-5
3
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