AS1705-T

AS1702 - AS1705 1.8W Single-Channel Audio Power Amplifiers D a ta S he e t 1 General Description The AS1702 - AS1705 are single-channel differential audio power-amplifiers designed to drive 4 and 8Ω loads. The integrated gain circuitry of these amplifiers and their small size make them ideal for 2.7- to 5V-powered portable audio devices. The differential input design improves noise rejection and provides common-mode rejection. A bridge-tied load (BTL) design minimizes external component count, while providing high-fidelity audio power amplification. The devices deliver 1.8W continuous average power per channel to a 4Ω load with less than 1% total harmonic distortion (plus noise), while operating from a single 2.7 to 5V supply. For reduced component designs, the devices are available with different gain levels as shown in Table 1. Table 1. Standard Products Model AS1702 AS1703 AS1704 AS1705 Gain Adjustable (via external components) AV = 0dB AV = 3dB AV = 6dB 2 Key Features ! 2.7 to 5.5V (VCC) Single-Supply Operation THD+N: 1.8W into 4Ω at 1% (per Channel) Differential Input Adjustable Gain Option (AS1702) Internal Fixed Gain to Reduce External Component Count (AS1703, AS1704, AS1705)