| Audio input type | Digital Input |
| Architecture | Class-D Boosted, Smart Amp |
| Speaker channels (Max) | Mono |
| Power stage supply (Max) (V) | 16 |
| Power stage supply (Min) (V) | 2.7 |
| Load (Min) (ohms) | 6.4 |
| Output power (W) | 7 |
| SNR (dB) | 110 |
| THD + N @ 1 kHz (%) | 0.01 |
| Iq (Typ) (mA) | 11.6 |
| Control interface | I2C |
| Closed/open loop | Closed |
| Analog supply (Min) (V) | 2.7 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 108 |
| Operating temperature range (C) | -40 to 85 |
- Key Features
- 256 Level, 13-V Class-H Boost
- Speaker Current and Voltage Sense
- Inter Chip Alignment (ICLA) of gain across devices.
- Output Power
- 7-W 0.1% THD+N (8 Ω at 3.8 V)
- Power Consumption (1% THD+N, 4.2 V into 8 Ω)
- 83.5% efficiency at 1 W
- <1uA HW shutdown VBAT Current
- Power Supplies
- VBAT: 2.7 V to 5.5 V
- VDD: 1.65 V to 1.95 V
- Digital (1.5 V) is internally generated from VDD.
- IO and Analog supplies are internally shorted to VDD.
- Protections
- Battery: Advanced Brown Out
- Clipping: VBAT Tracking Peak Voltage Limiter
- Transducer: DC Detection and Prevention
- Device: Thermal and Over Current Protection
- Interfaces and Control
- I2S/TDM: 8 Channels of 32 bit each up to 96 KSPS
- I2C: 4 selectable addresses
- 16 KSPS to 192 KSPS Sample Rates
- MCLK Free operation
- Performance
- Speaker/Receiver Mode with Dynamic Noise Control of Idle Channel Noise (ICN)
- Receiver Mode: 10 μVrms ICN
- Speaker Mode: 15 μVrms ICN
- Spread Spectrum Low EMI Mode
- 110 dB SNR at 1% THD+N(8Ω)
The TAS2564 is a digital input, Class-D audio amplifier with a 256 level, 13 V Class-H boost. The robust 13 V Class-H boost provides the power needed for peak output while the algorithmically-controlled 256 level boost reduces the average power consumption. The boost is easily configured with PurePath Console GUI.
The Class-D amplifier is capable of delivering 7 W of peak power into an 8 Ω. TAS2564 is 83.5% efficient at 1 W output level. Integrated speaker voltage and current sense provides real time monitoring to keep speakers in the safe operation area.
Battery tracking peak voltage limiter with brown-out prevention optimizes amplifier headroom over the entire battery discharge. Up to four devices can share a common bus via I2S/TDM + I 2C interfaces.
