AK4371 Datasheet | Asahi Kasei Microdevices

DESCRIPTION The AK4371 is a 24-bit DAC with an integrated PLL and headphone amplifier. The PLL input frequency is synchronized to typical mobile phone clock frequencies. The AK4371 features an analog mixing circuit that allows easy interfacing in mobile phone and portable munication designs. The integrated headphone amplifier features “pop-noise free” power-on/off, a mute control, and it delivers 40m W of power into 16Ω. The AK4371 is packaged in a 32-pin QFN (4mm×4mm) package, ideal for portable applications. FEATURE † Multi-bit ΔΣ DAC † Sampling Rate - 8k Hz, 11.025k Hz, 12k Hz, 16k Hz, 22.05k Hz, 24k Hz, 32k Hz, 44.1k Hz and 48k Hz † On chip perfect filtering 8 times FIR interpolator - Passband: 20k Hz - Passband Ripple: ±0.02d B - Stopband Attenuation: 54d B † Digital De-emphasis Filter: 32k Hz, 44.1k Hz and 48k Hz † System Clock - PLL Mode (MCKI): 27MHz, 26MHz, 19.8MHz, 19.68MHz, 19.2MHz, 15.36MHz, 14.4MHz, 13MHz, 12MHz and 11.2896MHz - PLL Mode (BICK or LRCK): 64fs, 32fs or fs - EXT Mode: 256fs/384fs/512fs/768fs/1024fs - Input Level: AC Couple Input Available † Audio I/F Format: MSB First, 2’s plement - I2S, 24bit MSB justified, 24bit/20bit/16bit LSB justified - Master/Slave Mode † Digital Mixing: LR, LL, RR, (L+R)/2 † Bass Boost Function † Digital ATT † Analog Mixing Circuit: 6 Inputs (Single-ended or Full-differential) † Stereo Lineout - S/N: 90d B@3.3V - Output Volume: +6 to - 24d B (or 0 to - 30d B), 2d B step † Mono Hands-free Output - Output Power: 0.8m W @ 600Ω 3.3V - Output Volume: +6 to - 24d B (or 0 to - 30d B), 2d B step † Headphone Amplifier - Output Power: 40m W x 2ch @16Ω, 3.3V - S/N: 92d B@3.3V - Pop Noise Free at Power-ON/OFF and Mute - Output Volume: 0 ~ - 63d B & +12/+6/0 d B Gain 1.5d B step (0 ~ - 30d B), 3d B step (- 30 ~ - 63d B) † μP Interface: 3-wire/I2C † Power Supply: 1.6V ∼ 3.6V † Power Supply Current: 3.8m A @1.8V (6.8m W, DAC+HP, No output) † Ta: - 30 ∼ 85°C † Small Package: 32pin QFN (4mm x 4mm, 0.4mm pitch) † Register patible with AK4368 MS0596-E-00 -1- 2007/04 -...