Datasheet AD8452 (Analog Devices) - 4

Data Sheet AD8452 SPECIFICATIONS
AVCC = 15 V, AVEE = −15 V, VIN = 24 V, and TA = 25°C, unless otherwise noted.
ANALOG FRONT-END AND CONTROLLER SPECIFICATIONS Table 1. Parameter Test Conditions/Comments Min Typ Max Unit
CURRENT SENSE INSTRUMENTATION AMPLIFIER Gain 66 V/V Gain Error VISMEA = ±10 V ±0.1 % Gain Drift TA = TMIN to TMAX 3 ppm/°C Offset Voltage Referred to Input (RTI) ISREFH pin and ISREFL pin grounded −100 +100 µV Offset Voltage Drift TA = TMIN to TMAX −0.6 −0.1 +0.6 µV/°C Input Bias Current 15 30 nA Input Common-Mode Voltage Range VISVP − VISVN = 0 V AVEE + 2.3 AVCC − 2.4 V Differential Input Impedance 150 GΩ Common-Mode Input Impedance 150 GΩ Output Voltage Swing RL = 10 kΩ AVEE + 1.5 AVCC − 1.2 V Reference Input Voltage Range ISREFH pin and ISREFL pin tied together AVEE + 1.5 AVCC − 1.5 V Reference Bias Current VISVP = VISVN = 0 V 5 µA Output Voltage Level Shift ISREFL pin grounded Maximum ISREFH pin connected to VREF pin 11 12.5 14 mV Scale Factor VISMEA/VISREFH 4.4 5 5.6 mV/V Short-Circuit Current 40 mA Common-Mode Rejection Ratio (CMRR) ΔVCM = 20 V 120 dB Temperature Coefficient TA = TMIN to TMAX 0.01 µV/V/°C Power Supply Rejection Ratio (PSRR) ΔVS = 10 V 122 140 dB Small Signal −3 dB Bandwidth 675 kHz Slew Rate ΔVISMEA = 10 V 5 V/µs VOLTAGE SENSE DIFFERENCE AMPLIFIER Gain 0.4 V/V Gain Error VIN = ±10 V ±0.1 % Gain Drift TA = TMIN to TMAX 3 ppm/°C Offset Voltage Referred to Output (RTO) BVREFH pin and BVREFL pin grounded −250 +250 µV Offset Voltage Drift TA = TMIN to TMAX −2 −0.1 +2 µV/°C Differential Input Voltage Range VBVN = 0 V, VBVREFL = 0 V −17 +17 V Input Common-Mode Voltage Range VBVMEA = 0 V −40 +40 Differential Input Impedance 400 kΩ Input Common-Mode Impedance 140 kΩ Output Voltage Swing RL = 10 kΩ AVEE + 1.5 AVCC − 1.2 V Reference Input Voltage Range BVREFH pin and BVREFL pin connected AVEE + 1.5 AVCC − 1.5 V Output Voltage Level Shift BVREFL pin grounded Maximum BVREFH pin connected to VREF pin 11.0 12.5 14.0 mV Scale Factor VBVMEA/VBVREFH 4.4 5 5.6 mV/V Short-Circuit Current 40 mA CMRR ΔVCM = 10 V, RTO 90 dB Temperature Coefficient TA = TMIN to TMAX 0.05 µV/V/°C PSRR ΔVS = 10 V, RTO 114 123 dB Small Signal −3 dB Bandwidth 3.0 MHz Slew Rate ΔVBVMEA = 10 V 0.9 V/µs Rev. 0 | Page 3 of 34 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Analog Front-End and Controller Specifications Pulse-Width Modulator Specifications Digital Interface Specifications Power Supply Temperature Range Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics In-Amp Characteristics Difference Amplifier Characteristics CC and CV Loop Filter Amplifiers and VSET Buffer (except where Noted) Reference Characteristics Pulse-Width Modulator Theory of Operation Introduction Instrumentation Amplifier (In-Amp) Reversing Polarity When Charging and Discharging In-Amp Offset Option Battery Reversal and Overvoltage Protection Difference Amplifier CC and CV Loop Filter Amplifiers Charging Lithium-Ion (Li-Ion) Cells Concepts of Constant Current (CC) and Constant Voltage (CV) Compensation Charge and Discharge Control Conditions to Charge and Discharge a Battery MODE Pin Input and Output Supply Pins Shutdown Undervoltage Lockout (UVLO) Soft Start PWM Drive Signals Peak Current Protection and Diode Emulation (Synchronous) Peak Current-Limit Detection Diode Emulation/Synchronous Mode Operation Frequency and Phase Control Internal Frequency Control External Frequency Control Operating Frequency Phase Shift Maximum Duty Cycle Fault Input Thermal Shutdown (TSD) Applications Information Analog Controller Functional Description Power Supply Connections Current Sense In-Amp Connections Current Sensors Optional Low-Pass Filter Voltage Sense Differential Amplifier Connections Battery Current and Voltage Control Inputs (ISET and VSET) Loop Filter Amplifiers Selecting Charge or Discharge Options Select RCL and RCLVT for the Peak Current Limit Setting the Operating Frequency and Programming the Synchonization Pin Select RFREQ for Standalone or Master Clock Selecting RFREQ for a Slave Device Programming the External Clock Phase Shift Programming the Dead Time Programming the Maximum Duty Cycle Selecting CSS Additional Information Outline Dimensions Ordering Guide