| Power Supply (Min) (V) |
2.3 |
| Power Supply (Max) (V) |
5.5 |
| Digital Supply (Min) (V) |
1.65 |
| Digital Supply (Max) (V) |
1.95 |
| IO Supply (Min) (V) |
1.2 |
| IO Supply (Max) (V) |
1.8 |
| PVDD Voltage(V) |
12 |
| Boost Type |
Adaptive Boost |
| PO(W)
（8&THD=1%） |
6.9W@4.4V |
| SPK
Noise(uV) |
9 |
| DSP |
NO |
| Protection |
MEC+TPC |
| Control Interface |
IIC
IIS |
| RCV mode |
YES |
| RCV
Noise(uV) |
7 |
| Temperature |
-40℃~85℃ |
| Package (mm) |
WLCSP 2.33X2.33-36B |
Smart amplifier with total efficiency up to 89%
Output noise：
Speaker mode: 9μV
Receiver mode: 7μV
THD+N: 0.02%
Speaker Voltage and Current monitor and
feedback with I2S/TDM interface
Power Saving Mode (PSM)
Supports 4Ω Speaker
Extensive Pop-Click Suppression
Volume control (from -96dB to 0dB)
I2S/TDM interface：
I2S, Left-Justified and Right-Justified
Supports 1/2/4/6/8/16 slots TDM
Input Sample Rates from 8kHz to 192kHz
Data Width: 16, 20, 24, 32 Bits
Ultrasonic support with sample frequency ≥ 48kHz(48kHz/96kHz/192kHz)
I2C-bus control interface(≤1MHz)
Power Supplies：
VBAT: 2.3V-5.5V
VDDA: 1.65V~1.95V
VDDIO: 1.2V / 1.8V
Battery Brown Out Protection
Short-Circuit Protection, Over-Temperature
Protection, Under-Voltage Protection and
Over-Voltage Protection
WLCSP 2.33mm x 2.33mm -36B Package
The AW88470CSR is an I2S/TDM input, high efficiency digital Smart K audio amplifier with an integrated 12V smart boost converter. Due to its 7μV noise floor and ultra-low distortion, clean listening is guaranteed. It can deliver 6.9W output power into an 8Ω speaker at a battery voltage of 4.4V.
The AW88470CSR integrates a high-efficiency smart boost converter as the Class-D amplifier supply rail. The output voltage of boost converter can be adjusted smartly according to the input amplitude, which extremely improves the efficiency without clipping distortion.
The AW88470CSR features high RF suppression and eliminates TDD noise completely benefited from the digital audio input interface. General settings are communicated via an I2C-bus interface, and the device address is configurable.
The AW88470CSR offers Short Circuit Protection, Over-Temperature Protection, Under-Voltage Protection and Over-Voltage Protection to protect the device.
The AW88470CSR features Power Saving Mode (PSM), a feature developed specifically for batteries life extension, which helps reduce power consumption and noise during small output. By switching output power rail according to different input amplitude, system can achieve a better performance of efficiency and noise.
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