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AD8253 Datasheet(PDF) 1 Page - Analog Devices |
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AD8253 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 34 page  LTC6373 1 Rev. 0 For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION 36V Fully-Differential Programmable-Gain Instrumentation Amplifier with 25pA Input Bias Current The LTC®6373 is a precision instrumentation amplifier with fully differential outputs which includes a closely- matched internal resistor network to achieve excellent CMRR, offset voltage, gain error, gain drift, and gain non- linearity. The user can easily program the gain to one of seven available settings through a 3-bit parallel inter- face (A2 to A0). The 8th state puts the part in shutdown which reduces the current consumption to 220μA. Unlike a conventional voltage feedback amplifier, the LTC6373 maintains nearly the same bandwidth across all its gain settings. The LTC6373 features fully differential outputs to drive high performance, differential-input ADCs. The output common mode voltage is independently adjustable via the VOCM pin. The combination of high impedance inputs, DC precision, low noise, low distortion, and high-speed differential ADC drive makes the LTC6373 an ideal candi- date for optimizing data acquisition systems. The LTC6373 is available in a 12-lead 4mm × 4mm DFN (LFCSP) package and is fully specified over the −40°C to 125°C temperature range. Interfacing a 40VP-P Ground-Referenced Differential Input Signal to a 5V ADC Gain vs Frequency APPLICATIONS n Pin-Programmable Gains: G = 0.25, 0.5, 1, 2, 4, 8, 16V/V + Shutdown n Fully Differential Outputs n Gain Error: 0.012% (Max) n Gain Error Drift: 1ppm/°C (Max) n CMRR: 103dB (Min), G = 16 n Input Bias Current: 25pA (Max) n Input Offset Voltage: 92μV (Max), G = 16 n Input Offset Voltage Drift: 1.7μV/°C (Max), G = 16 n –3dB Bandwidth: 4MHz, G = 16 n Input Noise Density: 8nV/√Hz, G = 16 n Slew Rate: 12V/μs, G = 16 n Adjustable Output Common Mode Voltage n Quiescent Supply Current: 4.4mA n Supply Voltage Range: ±4.5V to ±18V n –40°C to 125°C Specified Temperature Range n Small 12-Lead 4mm × 4mm DFN (LFCSP) Package n Data Acquisition Systems n Biomedical Instrumentation n Test and Measurement Equipment n Differential ADC Drivers n Single-Ended-to-Differential Conversion n Multiplexed Applications All registered trademarks and trademarks are the property of their respective owners. RL= 2kΩ FREQUENCY (MHz) 0.01 0.1 1 10 100 –24 –18 –12 –6 0 6 12 18 24 30 36 Gain vs Frequency 6373 TA01b G = 16 G = 8 G = 4 G = 2 G = 1 G = 0.5 G = 0.25 6373 TA01a 887 887 2.5V + – LTC6373 V– V+ 15V G = 0.25 –15V 10V 5V –10V 10V –10V 0V GND AD4020 SAR ADC 5V 0V 180pF V+IN V–IN 180pF IN– VDD VREF 1.8V 20-BIT 0.6Msps 5V IN+ 180pF VOCM MEASURED SIGNAL CHAIN PERFORMANCE: INPUT: fIN =1kHz, –0.5dBFS SNR: 96.5dB THD: –122dB |
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