Datasheet LT1990-10 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | ±250V Input Range, 100kHz, G =10, Micropower, Difference Amplifier |
| 页数 / 页 | 16 / 1 — FEATURES. DESCRIPTION. Gain = 10. –3dB Bandwidth = 100kHz. APPLICATIONS. … |
| 文件格式/大小 | PDF / 271 Kb |
| 文件语言 | 英语 |
FEATURES. DESCRIPTION. Gain = 10. –3dB Bandwidth = 100kHz. APPLICATIONS. TYPICAL APPLICATION. Full-Bridge Load Current Monitor
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LT1990-10 ±250V Input Range, 100kHz, G =10, Micropower, Difference Amplifier
FEATURES DESCRIPTION
n
Gain = 10
The LT®1990-10 is a micropower precision difference am- n
–3dB Bandwidth = 100kHz
plifier with a very high common mode input voltage range, n High Common Mode Voltage Range: a fixed gain of 10 and 100kHz bandwidth. The LT1990-10 n ±250V (VS = ±15V) operates over a ±250V common mode voltage range on a n 85V Window (VS = 5V, 0V) ±15V supply. The inputs are fault protected from common n Common Mode Rejection Ratio: 60dB Min mode voltage transients up to ±350V and differential n Input Protection to ±350V voltages up to ±500V. The LT1990-10 is ideally suited for n Gain Error: 0.8% Max both high side and low side current or voltage monitoring. n PSRR: 82dB Min On a single 5V supply, the LT1990-10 has an adjustable n High Input Impedance: 2MΩ Differential, 85V input range, 60dB min CMRR and draws less than 500kΩ Common Mode 180µA supply current. The rail-to-rail output maximizes n Micropower: 180µA Max Supply Current the dynamic range, especially important for single sup- n Wide Supply Range: 2.7V to 36V plies as low as 2.7V. n Rail-to-Rail Output n 8-pin SO and pin FMEA Compatible MSOP Packages The LT1990-10 is specified for single 3V, 5V and ±15V supplies over the industrial temperature range.
APPLICATIONS
The LT1990-10 is available in the 8-pin SO and pin FMEA n Battery Cell Voltage Monitoring compatible MSOP packages. n High Voltage Current Sensing All registered trademarks and trademarks are the property of their respective owners. n Signal Acquisition in Noisy Environments n Input Protection n Fault Protected Front Ends n Level Sensing n Isolation
TYPICAL APPLICATION Full-Bridge Load Current Monitor
+VSOURCE 5V LT1990-10 900k 10k 1M 100k – RS V – + 1M OUT + IL VREF = 1.5V 10k IN OUT 54.9k 1nF LT6650 40k 40k 900k 100k GND FB –12V ≤ VCM ≤ 73V 20k VOUT = VREF ± (10 • IL • RS) 199010 TA01 1µF Rev 0 For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 3V/5V Electrical Characteristics Electrical Characteristics ±15V Electrical Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Typical Applications Related Parts
FEATURES DESCRIPTION
n
Gain = 10
The LT®1990-10 is a micropower precision difference am- n
–3dB Bandwidth = 100kHz
plifier with a very high common mode input voltage range, n High Common Mode Voltage Range: a fixed gain of 10 and 100kHz bandwidth. The LT1990-10 n ±250V (VS = ±15V) operates over a ±250V common mode voltage range on a n 85V Window (VS = 5V, 0V) ±15V supply. The inputs are fault protected from common n Common Mode Rejection Ratio: 60dB Min mode voltage transients up to ±350V and differential n Input Protection to ±350V voltages up to ±500V. The LT1990-10 is ideally suited for n Gain Error: 0.8% Max both high side and low side current or voltage monitoring. n PSRR: 82dB Min On a single 5V supply, the LT1990-10 has an adjustable n High Input Impedance: 2MΩ Differential, 85V input range, 60dB min CMRR and draws less than 500kΩ Common Mode 180µA supply current. The rail-to-rail output maximizes n Micropower: 180µA Max Supply Current the dynamic range, especially important for single sup- n Wide Supply Range: 2.7V to 36V plies as low as 2.7V. n Rail-to-Rail Output n 8-pin SO and pin FMEA Compatible MSOP Packages The LT1990-10 is specified for single 3V, 5V and ±15V supplies over the industrial temperature range.
APPLICATIONS
The LT1990-10 is available in the 8-pin SO and pin FMEA n Battery Cell Voltage Monitoring compatible MSOP packages. n High Voltage Current Sensing All registered trademarks and trademarks are the property of their respective owners. n Signal Acquisition in Noisy Environments n Input Protection n Fault Protected Front Ends n Level Sensing n Isolation
TYPICAL APPLICATION Full-Bridge Load Current Monitor
+VSOURCE 5V LT1990-10 900k 10k 1M 100k – RS V – + 1M OUT + IL VREF = 1.5V 10k IN OUT 54.9k 1nF LT6650 40k 40k 900k 100k GND FB –12V ≤ VCM ≤ 73V 20k VOUT = VREF ± (10 • IL • RS) 199010 TA01 1µF Rev 0 For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information 3V/5V Electrical Characteristics Electrical Characteristics ±15V Electrical Characteristics Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Typical Applications Related Parts