PAC2514x Users Guide Preview
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Rev. 1.3 12 December 2023 © 2023 Qorvo US, Inc.
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7
CONFIGURABLE ANALOG FRONT-END
7.1
Overview
The device includes a Configurable Analog Front End (CAFE, Figure 7-1). The CAFE can be
used to sense battery pack current using an integrated Differential Amplifier and 16-bit Sigma-
Delta ADC. The CAFE can configure three independent DACs to set three comparator
thresholds for over-current detection for the battery pack.
The CAFE can also sense cell voltages via a 16-bit Sigma Delta ADC and MUX which contains
inputs for each of the cell balance channels. Internal power supply rails, temperature, and
other signals can be selected using the AFE Mux and sampled using the MCU 12-bit SAR ADC.
7.2
Features
■
16-bit Sigma-Delta ADC for current sense
■
Current Sense Differential Programmable-Gain Amplifier
■
Analog input/output gain amplifier with ADC Input or signal output selection
■
Three comparators with DACs for programmable references for configurable OC
warning or fault handling
■
16-bit Sigma-Delta ADC for Voltage Sampling of up to 20 cell voltages
■
12-bit Successive Approximation Register for Temperature sense and Pin ADC input
and internal power supplies
■
Internal Temperature warning and fault protection
■
Push-Button (PB) input for exiting hibernate mode
■
PACK+ Charge detection and Load detection
■
2kHz independent clock source
