TA2131FN

TA2131FN TOSHIBA Bipolar Linear IC Silicon Monolithic TA2131FN Low Current Consumption Headphone Amplifier for Portable MD Player (With Bass Boost www.datasheet4u.com Function) The TA2131FN is a low current consumption headphone amplifier developed for portable digital audio. It is particularly well suited to portable MD players that are driven by a single dry cell. It also features a built-in bass boost function with AGC, and is capable of bass amplification of DAC output and analog signals such as tuner. Features · · · · · · · · · Low current consumption: ICCQ (VCC1) = 0.55 mA (typ.) ICCQ (VCC2) = 0.20 mA (typ.) Output power: Po = 8 mW (typ.) (VCC1 = 2.8 V, VCC2 = 1.2 V, f = 1 kHz, THD = 10%, RL = 16 Ω) Low noise: Vno = −102dBV (typ.) Built-in low-pass boost (with AGC) I/O pin for beep sound Outstanding ripple rejection ratio Built-in power mute Built-in power ON/OFF switch Operating supply voltage range (Ta = 25°C): VCC1 = 1.8~4.5 V VCC2 = 0.9~4.5 V Weight: 0.14 g (typ.) 1 2002-04-19 TA2131FN Block Diagram BEEP OFF www.datasheet4u.com Vref Vref VCC1 VCC1 DAC OUT (2.8 V) ON Vref IN 22 Vref BST BEEP GND IN SW 21 20 19 18 OFF ON OFF ON BST NF1 LPF1 24 23 Vref MT SW 17 PW SW 16 PW SW MT TC VCC1 15 14 INB 13 Vref BEEP BOOST MUTE SW SW BST1 BST2 BST AGC PW B PW A LPF2 1 BST NF2 2 BST OUT 3 AGC IN 4 DET 5 OUTB 6 PWR GND 7 OUTA 8 VCC2 9 BEEP OUTA 10 BEEP OUTB 11 INA 12 Vref RL Vref Vref RL +B (1.2 V) DAC OUT 2 2002-04-19 TA2...