Texas Instruments LMP7721
The LMP7721 is the industry’s lowest specified input bias current precision amplifier. The ultra-low input bias current is 3 fA, with a specified limit of ±20 fA at 25°C and ±900 fA at 85°C. This is achieved with the latest patent-pending technology of input bias current cancellation amplifier circuitry.| Part No. | LMP7721 |
|---|---|
| Datasheet | LMP7721 Download |
| Manufacturer |  Texas Instruments |
| Description | 3-Femtoampere Input Bias Current Precision Amplifier |
| Buy | Stock & Price |
FEATURES
●1 Unless Otherwise Noted, Typical Values at TA = 25°C, VS = 5 V.● Input Bias Current (VCM = 1 V) – Maximum at 25°C ±20 fA – Maximum at 85°C ±900 fA
● Offset Voltage ±26 µV
● Offset Voltage Drift −1.5 μV/°C
● DC Open-Loop Gain 120 dB
● DC CMRR 100 dB
● Input Voltage Noise (at f = 1 kHz) 6.5 nV/√Hz
● THD 0.0007%
● Supply Current 1.3 mA
● GBW 17 MHz
● Slew Rate (Falling Edge) 12.76 V/μs
● Supply Voltage 1.8 V to 5.5 V
● Operating Temperature Range −40°C to 125°C
● 8-Pin SOIC 2
APPLICATIONS
● Photodiode Amplifier● High Impedance Sensor Amplifier
● Ion Chamber Amplifier
● Electrometer Amplifier
● pH Electrode Amplifier
● Transimpedance Amplifier Ultra-Low Input Bias Current 5 0 INPUT BIAS (fA) -5 -10 -15 V+ = 5V V- = 0V TA = 25°C -20 0 0.5 1 1.5 2 2.5 3 3.5 VCM (V) 3
DESCRIPTION
This technology also maintains the ultra-low input bias current over the entire input common-mode voltage range of the amplifier. Other outstanding features, such as low voltage noise (6.5 nV/√Hz), low D...
