Overview
The LMC6001AIN/NOPB, produced by Texas Instruments, is an ultra-low input current operational amplifier. This device is renowned for its extremely low input current of 25 fA, making it ideal for applications requiring minimal input leakage. The LMC6001 features low power consumption of 750 μA, low input offset voltage of 350 μV, and ultra-low input current noise of 0.13 fA/√Hz. These characteristics enable the amplifier to provide almost noiseless amplification of high-resistance signal sources. The device also includes ESD protection of 2000 V and operates over a wide supply voltage range of 4.5 to 15.5 V.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Current (IB) | Either Input, VCM = 0 V, VS = ±5 V | 10 | 25 | 2000 | fA |
| Input Offset Voltage (VOS) | VS = ±5 V, VCM = 0 V | 0.35 | 1.35 | 2.0 | mV |
| Input Offset Current (IOS) | At temperature extremes | 5 | 1000 | 2000 | fA |
| Input Resistance (RIN) | >1 Tera Ω | TΩ | |||
| Common Mode Rejection Ratio (CMRR) | 0 V ≤ VCM ≤ 7.5 V | 72 | 83 | 83 | dB |
| Power Supply Rejection Ratio (+PSRR) | 5 V ≤ V+ ≤ 15 V | 70 | 80 | 94 | dB |
| Power Supply Rejection Ratio (-PSRR) | 0 V ≥ V− ≥ −10 V | 63 | 71 | 94 | dB |
| Large Signal Voltage Gain (AV) | Sourcing, RL = 2 kΩ | 300 | 400 | 1400 | V/mV |
| Slew Rate (SR) | V+ = 15 V, connected as voltage follower | 0.6 | 1.5 | V/μs | |
| Gain-Bandwidth Product (GBW) | 1.3 | MHz |
Key Features
- Ultra-Low Input Current: 25 fA maximum, ensuring minimal input leakage.
- Low Power Consumption: 750 μA, suitable for low-power applications.
- Low Input Offset Voltage: 350 μV, contributing to high precision.
- Ultra-Low Input Current Noise: 0.13 fA/√Hz, enabling almost noiseless amplification.
- High Input Resistance: Greater than 1 Tera Ω, ideal for high-impedance applications.
- ESD Protection: 2000 V, enhancing device reliability.
- Wide Supply Voltage Range: 4.5 to 15.5 V, offering flexibility in system design.
- Rail-to-Rail Output Swing: Maintains output swing even when driving large loads.
- Latch-Up Prevention: Designed to withstand 100-mA surge current on I/O pins.
Applications
- Electrometer Amplifiers: Ideal for applications requiring ultra-low input leakage.
- Photodiode Preamplifiers: Suitable for sensitive photodetection and transimpedance amplifiers.
- Sensor Amplifiers: Used in various sensor applications where low input current is crucial.
- Ion Detectors: Applicable in ion detection systems due to its low noise and high input impedance.
- A.T.E. Leakage Testing: Utilized in automated testing equipment for leakage testing.
- Long Interval Integrators and Ultra-High Input Impedance Instrumentation Amplifiers: Suitable for precise measurement and integration tasks.
- Sensitive Electrical-Field Measurement Circuits: Ideal for applications requiring high sensitivity and low noise.
Q & A
- What is the maximum input current of the LMC6001?
The maximum input current of the LMC6001 is 25 fA.
- What is the typical input offset voltage of the LMC6001?
The typical input offset voltage is 1.35 mV.
- What is the input resistance of the LMC6001?
The input resistance is greater than 1 Tera Ω.
- What is the ESD protection rating of the LMC6001?
The ESD protection rating is 2000 V.
- What is the operating power consumption of the LMC6001?
The operating power consumption is 750 μA.
- What are the typical applications of the LMC6001?
The LMC6001 is typically used in electrometer amplifiers, photodiode preamplifiers, sensor amplifiers, ion detectors, and A.T.E. leakage testing.
- How does the LMC6001 handle latch-up susceptibility?
The LMC6001 is designed to withstand 100-mA surge current on I/O pins and includes methods to prevent latch-up, such as limiting current to the supply pins.
- What is the gain-bandwidth product of the LMC6001?
The gain-bandwidth product is 1.3 MHz.
- What is the slew rate of the LMC6001?
The slew rate is typically 1.5 V/μs.
- How does the LMC6001 maintain stability over a wide range of operating conditions?
The LMC6001 uses special feed-forward compensation design techniques to maintain stability over a wider range of operating conditions than traditional op amps.
