具有 1.8V 輸入邏輯電平的 1.25W 單聲道、模擬輸入 AB 類音頻放大器
| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (Max) | Mono |
| Power stage supply (Max) (V) | 5.5 |
| Power stage supply (Min) (V) | 2.5 |
| Load (Min) (ohms) | 8 |
| Output power (W) | 1.25 |
| SNR (dB) | 104 |
| THD + N @ 1 kHz (%) | 0.06 |
| Iq (Typ) (mA) | 1.7 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (Min) (V) | 2.5 |
| Analog supply (Max) (V) | 5.5 |
| PSRR (dB) | 90 |
| Operating temperature range (C) | -40 to 85 |
- 1.25 W Into 8-Ω From a 5-V Supply at THD = 1%
(Typical) - Shutdown Pin has 1.8-V Compatible Thresholds
- Low Supply Current: 1.7 mA Typical
- Shutdown Current < 10 μA
- Only Five External Components
- Improved PSRR (90 dB) and Wide Supply
Voltage (2.5 V to 5.5 V) for Direct Battery
Operation - Fully Differential Design Reduces RF
Rectification - Improved CMRR Eliminates Two Input
Coupling Capacitors - C(BYPASS) Is Optional Due to Fully Differential
Design and High PSRR
- Improved PSRR (90 dB) and Wide Supply
- Available in 3-mm × 3-mm QFN Package (DRB)
- Available in an 8-Pin PowerPAD? MSOP (DGN)
- Available in a 2-mm ? 2-mm MicroStar Junior?
BGA Package (ZQV)
The TPA6205A1 device is a 1.25-W mono fully differential amplifier designed to drive a speaker with at least 8-Ω impedance while consuming less than 37 mm2 (ZQV package option) total printed-circuit-board (PCB) area in most applications. This device operates from 2.5 V to 5.5 V, drawing only 1.7 mA of quiescent supply current. The TPA6205A1 is available in the space-saving 2-mm × 2-mm MicroStar Junior BGA package, and the space saving 3-mm × 3-mm QFN (DRB) package.
Features like 85-dB PSRR from 90 Hz to 5 kHz, improved RF-rectification immunity, and small PCB area makes the TPA6205A1 ideal for wireless handsets. A fast start-up time of 4s with minimal pop makes the TPA6205A1 ideal for PDA applications.
