Datasheet LT1677 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | Low Noise, Rail-to-Rail Precision Op Amp |
| 页数 / 页 | 20 / 1 — FEATURES. DESCRIPTIO. Rail-to-Rail Input and Output. 100% Tested Low … |
| 文件格式/大小 | PDF / 561 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTIO. Rail-to-Rail Input and Output. 100% Tested Low Voltage Noise:. 3.2nV/. Hz Typ at 1kHz. 4.5nV/. Hz Max at 1kHz
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LT1677 Low Noise, Rail-to-Rail Precision Op Amp
U FEATURES DESCRIPTIO
■
Rail-to-Rail Input and Output
The LT®1677 features the lowest noise performance avail- ■
100% Tested Low Voltage Noise:
able for a rail-to-rail operational amplifier: 3.2nV/√Hz
3.2nV/
√
Hz Typ at 1kHz
wideband noise, 1/f corner frequency of 13Hz and 90nV
4.5nV/
√
Hz Max at 1kHz
peak-to-peak 0.1Hz to 10Hz noise. Low noise is combined ■
Offset Voltage: 60
µ
V Max
with outstanding precision: 20µV offset voltage and ■ Low VOS Drift: 0.2µV/°C Typ 0.2µV/°C drift, 130dB common mode and power supply ■ Low Input Bias Current: 20nA Max rejection and 7.2MHz gain bandwidth product. The com- ■ Wide Supply Range: 3V to ±18V mon mode range exceeds the power supply by 100mV. ■ High AVOL: 7V/µV Min, RL = 10k The voltage gain of the LT1677 is extremely high, 19 million ■ High CMRR: 109dB Min (typical) driving a 10k load. ■ High PSRR: 108dB Min ■ Gain Bandwidth Product: 7.2MHz In the design, processing and testing of the device, particular ■ Slew Rate: 2.5V/µs attention has been paid to the optimization of the entire ■ Operating Temperature Range: – 40°C to 85°C distribution of several key parameters. Consequently, the specifications have been spectacularly improved compared
U
to competing rail-to-rail amplifiers.
APPLICATIO S
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ■ Low Noise Signal Processing All other trademarks are the property of their respective owners. ■ Microvolt Accuracy Threshold Detection ■ Strain Gauge Amplifiers ■ Tape Head Preamplifiers ■ Direct Coupled Audio Gain Stages ■ Infrared Detectors ■ Battery-Powered Microphones
U TYPICAL APPLICATIO Distribution of Offset Voltage
25
3V Electret Microphone Amplifier
TA = 25°C VS = ±15V 20 A R3 V = –100 1.5V 1M 15 R1 C1 R2 1.5V PANASONIC 10k 0.68µF TO PA 10k ELECTRET 2 – OR 7 CONDENSER HEADPHONES 10 6 MICROPHONE LT1677 PERCENT OF UNITS WM-61 3 + www.panasonic.com/pic 23Hz 4 5 (714) 373-7334 HIGHPASS –1.5V 1677 TA01 0 –40 –30 –20 –10 0 10 20 30 40 INPUT OFFSET VOLTAGE (µV) 1677 TA02 1677fa 1
U FEATURES DESCRIPTIO
■
Rail-to-Rail Input and Output
The LT®1677 features the lowest noise performance avail- ■
100% Tested Low Voltage Noise:
able for a rail-to-rail operational amplifier: 3.2nV/√Hz
3.2nV/
√
Hz Typ at 1kHz
wideband noise, 1/f corner frequency of 13Hz and 90nV
4.5nV/
√
Hz Max at 1kHz
peak-to-peak 0.1Hz to 10Hz noise. Low noise is combined ■
Offset Voltage: 60
µ
V Max
with outstanding precision: 20µV offset voltage and ■ Low VOS Drift: 0.2µV/°C Typ 0.2µV/°C drift, 130dB common mode and power supply ■ Low Input Bias Current: 20nA Max rejection and 7.2MHz gain bandwidth product. The com- ■ Wide Supply Range: 3V to ±18V mon mode range exceeds the power supply by 100mV. ■ High AVOL: 7V/µV Min, RL = 10k The voltage gain of the LT1677 is extremely high, 19 million ■ High CMRR: 109dB Min (typical) driving a 10k load. ■ High PSRR: 108dB Min ■ Gain Bandwidth Product: 7.2MHz In the design, processing and testing of the device, particular ■ Slew Rate: 2.5V/µs attention has been paid to the optimization of the entire ■ Operating Temperature Range: – 40°C to 85°C distribution of several key parameters. Consequently, the specifications have been spectacularly improved compared
U
to competing rail-to-rail amplifiers.
APPLICATIO S
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ■ Low Noise Signal Processing All other trademarks are the property of their respective owners. ■ Microvolt Accuracy Threshold Detection ■ Strain Gauge Amplifiers ■ Tape Head Preamplifiers ■ Direct Coupled Audio Gain Stages ■ Infrared Detectors ■ Battery-Powered Microphones
U TYPICAL APPLICATIO Distribution of Offset Voltage
25
3V Electret Microphone Amplifier
TA = 25°C VS = ±15V 20 A R3 V = –100 1.5V 1M 15 R1 C1 R2 1.5V PANASONIC 10k 0.68µF TO PA 10k ELECTRET 2 – OR 7 CONDENSER HEADPHONES 10 6 MICROPHONE LT1677 PERCENT OF UNITS WM-61 3 + www.panasonic.com/pic 23Hz 4 5 (714) 373-7334 HIGHPASS –1.5V 1677 TA01 0 –40 –30 –20 –10 0 10 20 30 40 INPUT OFFSET VOLTAGE (µV) 1677 TA02 1677fa 1