ASAHI KASEI
[AK5700]
16-Bit
ΔΣ
Mono ADC with PLL & MIC-AMP
GENERAL DESCRIPTION
The AK5700 features a 16-bit mono ADC. Input circuits include a Microphone-Amplifier and an ALC (Auto
Level Control) circuit that is suitable for portable application with recording function. On-chip PLL supports
base-band clock of mobile phone, therefore it is easy to connect with DSP. The AK5700 is available in a
24pin QFN, utilizing less board space than competitive offerings.
FEATURES
1. Resolution: 16bits
2. Recording Function
- Input Selector
- Full-differential or Single-ended Input
- MIC Amplifier (+30dB/+15dB or 0dB)
- Input Voltage: 1.8Vpp@AVDD=3.0V (= 0.6 x AVDD)
- ADC Performance: S/(N+D): 78dB, DR, S/N: 89dB@MGAIN=0dB
S/(N+D): 77dB, DR, S/N: 87dB@MGAIN=+15dB
S/(N+D): 72dB, DR, S/N: 77dB@MGAIN=+30dB
- Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
- Digital ALC (Automatic Level Control)
(+36dB
∼ −54dB,
0.375dB Step, Mute)
3. Sampling Rate:
- PLL Slave Mode (EXLRCK pin): 7.35kHz
∼
48kHz
- PLL Slave Mode (EXBCLK pin): 7.35kHz
∼
48kHz
- PLL Slave Mode (MCKI pin):
8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
- PLL Master Mode:
8kHz, 11.025kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz
- EXT Slave Mode:
7.35kHz
∼
48kHz (256fs), 7.35kHz
∼
26kHz (512fs), 7.35kHz
∼
13kHz (1024fs)
4. PLL Input Clock:
- MCKI pin:
27MHz, 26MHz, 24MHz, 19.2MHz, 13.5MHz, 13MHz, 12.288MHz, 12MHz,
11.2896MHz
- EXLRCK pin: 1fs
- EXBCLK pin: 32fs/64fs
5. Master/Slave mode
6. Audio Interface Format: MSB First, 2’s complement
- DSP Mode, 16bit MSB justified, I
2
S
7.
μP
I/F: 3-wire Serial
8. Power Supply:
- AVDD: 2.4
∼
3.6V
- DVDD: 1.6
∼
3.6V
9. Power Supply Current: 6mA
10. Ta =
−30 ∼
85°C
11. Package: 24pin QFN (4mm x 4mm)
12. Pin and Register compatible with AK5701 Stereo Version
AK5700
MS0569-E-01
-1-
2006/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
