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AK4371 Datasheet, PDF (1/62 Pages) Asahi Kasei Microsystems – DAC with built-in PLL & HP-AMP | |||
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[AK4371]
AK4371
DAC with built-in PLL & HP-AMP
GENERAL 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 communication designs. The integrated
headphone amplifier features âpop-noise freeâ power-on/off, a mute control, and it delivers 40mW of
power into 16Ω. The AK4371 is packaged in a 32-pin QFN (4mmÃ4mm) package, ideal for portable
applications.
FEATURE
 Multi-bit ÎΣ DAC
 Sampling Rate
- 8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz and 48kHz
 On chip perfect filtering 8 times FIR interpolator
- Passband: 20kHz
- Passband Ripple: ±0.02dB
- Stopband Attenuation: 54dB
 Digital De-emphasis Filter: 32kHz, 44.1kHz and 48kHz
 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, 2âs Complement
- 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: 90dB@3.3V
- Output Volume: +6 to â24dB (or 0 to â30dB), 2dB step
 Mono Hands-free Output
- Output Power: 0.8mW @ 600Ω 3.3V
- Output Volume: +6 to â24dB (or 0 to â30dB), 2dB step
 Headphone Amplifier
- Output Power: 40mW x 2ch @16Ω, 3.3V
- S/N: 92dB@3.3V
- Pop Noise Free at Power-ON/OFF and Mute
- Output Volume: 0 ~ â63dB & +12/+6/0 dB Gain
1.5dB step (0 ~ â30dB), 3dB step (â30 ~ â63dB)
 μP Interface: 3-wire/I2C
 Power Supply: 1.6V ⼠3.6V
 Power Supply Current: 3.8mA @1.8V (6.8mW, DAC+HP, No output)
 Ta: â30 â¼ 85°C
 Small Package: 32pin QFN (4mm x 4mm, 0.4mm pitch)
 Register Compatible with AK4368
MS0596-E-00
-1-
2007/04
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