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PDF AK4635 Data sheet ( Hoja de datos )
| Número de pieza | AK4635 | |
| Descripción | 16-Bit Mono CODEC | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4635]
= Preliminary =
AK4635
16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP
GENERAL DESCRIPTION
The AK4635 is a 16-bit mono CODEC with Microphone-Amplifier, Speaker-Amplifier and Video-
Amplifier. Input circuits include a Microphone-Amplifier and an ALC (Automatic Level Control) circuit.
Output circuits include a Speaker-Amplifier and Mono Line Output. Video circuits include a LPF and
Video-Amplifier. The AK4635 suits a moving picture of Digital Still Camera and etc. This
speaker-Amplifier supports a Piezo Speaker. The AK4635 is housed in a space-saving 29-pin Wafer
Level CSP 2.5mm x 3.0mm package.
FEATURE
1. 16-Bit Delta-Sigma Mono CODEC
2. Recording Function
• 1ch Mono Input
• MIC Amplifier: (0dB/+3dB/+6dB/+10dB/ +17dB/+20dB/+23dB/+26dB/+29dB/+32dB)
• Digital ALC (Automatic Level Control)
(+36dB ∼ -54dB, 0.375dB Step, Mute)
• ADC Performance (MIC-Amp=+20dB)
- S/(N+D): 84dB
- DR, S/N: 86dB
• Wind-noise Reduction Emphasis
• 5 band notch Filter
3. Playback Function
• Digital ALC (Automatic Level Control)
(+36dB ∼ -54dB, 0.375dB Step, Mute)
• Mono Line Output: S/(N+D) : 85dB, S/N : 93dB
• Mono Class-D Speaker-Amp
- BTL Output
- Output Power: 400mW @ 8Ω (SVDD=3.3V)
- S/(N+D): 55dB (150mW@8Ω)
• Beep Generator
4. Video Function
• A Composite Video Input
• Gain Control (-1.0dB ∼ +10.5dB, 0.5dB Step)
• Low Pass Filter
• A Video-Amp for Composite Video Signal(+6dB)
• DC Direct Output or Sag Compensation Output
5. Power Management
6. PLL Mode:
• Frequencies:
12MHz, 13.5MHz, 24MHz, 27MHz (MCKI pin)
1fs (FCK pin)
16fs, 32fs or 64fs (BICK pin)
7. EXT Mode:
• Frequencies: 256fs, 512fs or 1024fs (MCKI pin)
8. Sampling Rate:
• PLL Slave Mode (FCK pin): 7.35kHz ~ 48kHz
• PLL Slave Mode (BICK pin): 7.35kHz ~ 48kHz
• PLL Slave Mode (MCKI pin):
Rev. 0.6
2007/10
-1-
1 page  
[AK4635]
PIN/FUNCTION
No. Pin Name
D2 VCOM
C1 VSS1
D1 AVDD
E2 VCOC
A2 PDN
A6 I2C
B2
CSN
SDA
B3
CCLK
SCL
C3 CDTIO
B4 SDTI
A5 SDTO
A3 FCK
A4 BICK
B6 DVDD
C6 VSS2
C4 MCKI
B5 MCKO
E5 SPP
C5 SPN
D6 VSS3
D5 SVDD
D4 AOUT
D3 MPI
E3 MIC
MICP
E4 LIN
MICN
E1 VIN
C2 VOUT
A1 VSAG
E6 NC
I/O Function
O
Common Voltage Output Pin, 0.45 x AVDD
Bias voltage of ADC inputs and DAC outputs.
- Ground Pin
- Analog Power Supply Pin
O
Output Pin for Loop Filter of PLL Circuit
This pin should be connected to VSS1 with one resistor and capacitor in series.
Power-Down Mode Pin
I “H”: Power up, “L”: Power down reset and initialize the control register.
AK4635 should always be reset when powered-up.
I
Control Mode Select Pin
“H”:I2C Bus, “L”:3-wire Serial
I Chip Select Pin (I2C pin = “L”)
I/O Control Data Input/Output Pin (I2C pin = “H”)
I Control Data Clock Pin (I2C pin = “L”)
I Control Data Clock Pin (I2C pin = “H”)
I/O
Control Data Input/Output Pin (I2C pin = “L”)
This pin should be connected to the ground. (I2C pin = “H”)
I Audio Serial Data Input Pin
O Audio Serial Data Output Pin
I/O Frame Clock Pin
I/O Audio Serial Data Clock Pin
- Digital Power Supply Pin
- Ground Pin
I External Master Clock Input Pin
O Master Clock Output Pin
O Speaker Amp Positive Output Pin
O Speaker Amp Negative Output Pin
- Ground Pin
- Speaker Amp Power Supply Pin
O Mono Line Output Pin
O MIC Power Supply Pin for Microphone
I Microphone Input Pin for Single Ended Input
(MDIF bit = “0”)
I Microphone Positive Input Pin for Differential Input
(MDIF bit = “1”)
I Line Input Pin for Single Ended Input
(MDIF bit = “0”)
I Microphone Negative Input Pin for Differential Input (MDIF bit = “1”)
I Composite Video Signal Input Pin
O Composite Video Signal Driver Pin
I Composite Video Signal Output Feedback Input Pin
-
No Connection
No internal bonding. This pin should be connected to the ground.
Note : All input pins except analog input pins (MIC/MICP, LIN/MICN, VIN, VSAG pins) must not be left floating
Rev. 0.6
2007/10
-5-
5 Page 
[AK4635]
FILTER CHRACTERISTICS
(Ta = −30 ∼ 85°C; AVDD = 2.8 ∼ 3.6V; DVDD = 1.6 ∼ 3.6V, SVDD = 2.2 ∼ 4.0V; fs=8kHz)
Parameter
Symbol
min
typ
ADC Digital Filter (Decimation LPF):
Passband
(Note 26) ±0.16dB
PB
0
-
−0.66dB
- 3.5
−1.1dB
- 3.6
−6.9dB
- 4.0
Stopband
(Note 26)
SB 4.7
-
Passband Ripple
PR -
-
Stopband Attenuation
SA 73
-
Group Delay
(Note 27)
GD -
16
Group Delay Distortion
ΔGD
-
0
DAC Digital Filter (Decimation LPF):
Passband
(Note 26) ±0.16dB
PB
0
-
−0.54dB
- 3.5
−1.0dB
- 3.6
−6.7dB
- 4.0
Stopband
(Note 26)
SB 4.7
-
Passband Ripple
PR -
-
Stopband Attenuation
SA 73
-
Group Delay
(Note 27)
GD -
16
Group Delay Distortion
ΔGD
-
0
DAC Digital Filter + Analog Filter:
Frequency Response: 0 ∼ 3.4kHz
FR - ±1.0
max
3.0
-
-
-
-
±0.1
-
-
-
3.0
-
-
-
-
±0.1
-
-
-
-
Units
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
μs
dB
kHz
dB
dB
1/fs
μs
dB
Note 26. The passband and stopband frequencies are proportional to fs (system sampling rate).
For example, ADC of PB = 3.6kHz is 0.45*fs (@ −1.0dB). A reference of frequency response is 1kHz.
Note 27. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of a channel from the input register to the output register of the ADC. For the DAC, this time is from
setting the 16-bit data of a channel from the input register to the output of analog signal. When there is not a
phase change with the IIR filter, the group delay of the programmable filter (primary HPF + primary LPF +
5-band Equalizer + ALC) increases for 2/fs than a value of an above mention.
DC CHRACTERISTICS
(Ta = −30 ~ 85°C; AVDD = 2.8 ∼ 3.6V, DVDD = 1.6 ∼ 3.6V, SVDD = 2.2 ∼ 4.0V)
Parameter
Symbol
min
High-Level Input Voltage
(DVDD ≥ 2.2V)
VIH 70%DVDD
(DVDD < 2.2V)
80%DVDD
Low-Level Input Voltage
(DVDD ≥ 2.2V)
VIL
-
(DVDD < 2.2V)
-
High-Level Output Voltage
(Iout = −80μA)
VOH DVDD−0.2
Low-Level Output Voltage
(Except SDA pin: Iout = 80μA) VOL1
-
(SDA pin, 2.0V ≤ DVDD ≤ 3.6V: Iout = 3mA) VOL2
-
(SDA pin, 1.6V ≤ DVDD < 2.0V: Iout = 3mA) VOL2
-
Input Leakage Current
Iin -
typ
-
-
-
-
-
-
-
-
-
max
-
-
30%DVDD
20%DVDD
-
0.2
0.4
20%DVDD
±10
Units
V
V
V
V
V
V
V
μA
Rev. 0.6
- 11 -
2007/10
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AK4635.PDF ] | |
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