The CS4461 is a multi-bit analog-to-digital converter from Cirrus Logic that supports 5.0V and 3.3V logic levels and can convert analog signals to digital signals at up to 7.5MHz, making it ideal for use in high-power audio systems.
The CS4461 is a complete analog‑to‑digital converter designed for class‑D real‑time PSR feedback. It uses a 5th‑order multi‑bit delta‑sigma architecture, supports 3.3 V‑5.0 V logic levels, and provides differential analog input with low noise and high power‑supply rejection.
The datasheet lists electrical characteristics, pin descriptions, a typical connection diagram, recommended analog input buffering, package dimensions, ordering information and revision history. It also includes commercial and automotive temperature ranges and power‑consumption figures for normal and power‑down modes.
| Power Supply Current (VA) Normal Operation | 17.5 mA – 21 mA |
|---|---|
| Digital Power Supply Current (VDP) at 5.0 V | 22 mA – 26 mA |
| Power Consumption at 5.0 V (Normal) | 198 mW – 235 mW |
| ADC Power Supply Rejection Ratio (1 kHz) | ≥ 65 dB |
| Maximum Differential Analog Input Voltage | 3.9 V |
The device consumes between 198 mW and 235 mW in normal operation at a 5.0 V supply.
The CS4461 is offered in a 24‑pin TSSOP package.
The differential analog input should not exceed 3.9 V across AIN+ and AIN‑.