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PDF AK4203 Data sheet ( Hoja de datos )
| Número de pieza | AK4203 | |
| Descripción | Stereo Cap-less LINE-Amp and Video-Amp | |
| Fabricantes | AKM | |
| Logotipo |  |
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[AK4203]
AK4203
Stereo Cap-less LINE-Amp and Video-Amp
GENERAL DESCRIPTION
The AK4203 is an audio stereo cap-less line driver with 1-channel video driver. It eliminates the need for
large DC-blocking capacitors with a built-in Charge-pump circuit. The AK4203 achieves 2Vrms outputs
with excellent linearity 2Vrms output by single 3.3V power supply. The AK4203 is available in small 16-pin
TSSOP, saving the system space and cost.
FEATURE
Audio Line-Amp
Differential Input
Stereo Cap-less Amplifier (No DC-blocking capacitors required)
Line-Out level: 2.0Vrms
THD+N: -90dB
S/N: 102dB
Output gain: 6dB
Low-pass Filter: fc= 130kHz
Pop Noise Free Ground-referenced Output
Video Amp
1ch Stereo Cap-less Amplifier (No DC-blocking capacitors required)
Integrated Video Amplifier (+6dB)
Input Level: 1.5Vpp (max)
SN: 75dB(typ), Bandwidth: 100kHz ∼ 6MHz
LPF: -0.5dB@ 6.75MHz (typ), -43dB@27MHz (typ)
Video Mute Function
Power Supply: 3.0V ~ 3.6V
Ta: −20 ∼ 85°C
Package: 16TSSOP
MS1376-E-00
-1-
2012/02
1 page  
[AK4203]
ABSOLUTE MAXIMUM RATINGS
(VSS1=VSS2 =0V (Note 1))
Parameter
Symbol
min
max
Power Supply
VDD1
VDD2
-0.3
4.0
Input Current (any pins except for supplies)
IIN
-
±10
Audio Input Voltage
(Note 4)
VINA
VEE -0.3
VDD1 +0.3
Video Input Voltage
VINV
-0.3
VDD2 +0.3
Ambient Operating Temperature
Ta -20
85
Storage Temperature
Tstg -65
150
Note 1. All voltages are respect to ground.
Note 2. VSS1 and VSS2 must be connected to the same analog plane.
Note 3. VDD1 and VDD2 must be the same voltage.
Note 4. VEE: The VEE pin voltage
VEE is generated by the internal charge pump circuit. VEE voltage is “-VDD1 +0.2V” (typ).
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
Unit
V
mA
V
V
°C
°C
RECOMMEND OPERATING CONDITIONS
(VSS1=VSS2 =0V)
Parameter
Symbol
min typ
Power Supply
VDD1
3.0 3.3
VDD2
3.0 3.3
Note 3. VDD1 and VDD2 must be the same voltage.
Note: AKM assumes no responsibility for the usage beyond the conditions in this datasheet.
max
3.6
3.6
Unit
V
V
ELECTICAL CHARACTERISTICS
(Ta=25°C; VDD1= VDD2 = 3.3V; VSS1= VSS2 = 0V)
Power Supplies
Parameter
min
Power Supply (VDD1+VDD2)
Normal Operation (Note 5)
Note 5. No input and no load.
typ
18
max Unit
30 mA
MS1376-E-00
-5-
2012/02
5 Page 
[AK4203]
1. Grounding and Power Supply Decoupling
The AK4203 requires careful attention to power supply and grounding arrangements. VDD1 and VDD2 are usually
supplied from the analog supply in the system. If VDD1 and VDD2 are supplied separately, they must be powered-up at
the same time. VSS1 and VSS2 pins must be connected to the analog ground plane. System analog ground and digital
ground should be wired separately and connected together as close as possible to where the supplies are brought onto the
printed circuit board. Decoupling capacitors for high frequency should be placed as near as possible to the supply pin.
2. Notes for Drawing a Board
Analog input and output pins should be as near as possible in order to avoid unwanted coupling into the AK4203. Unused
pins should be open.
3. Analog Input
3-1. Audio Signal Input
The audio signal inputs are differential input. The output signal of LINP/RINP has the same phase. Connect a
capacitor about 1uF to each input pin for AC coupling.
3-2. Video Signal Input
Tip Sync level is fixed by an internal clamp circuit. Connect a capacitor about 0.1uF to the VIN pin for AC coupling.
4. Analog Output
4-1. Audio Signal Output
The audio signal outputs are single-ended output. The output rages to 2.0Vrms (typ) centered VSS (0V, typ) via
LPF. The DC offset is less than ±5mV.
4-2. Video Signal Output
The integrated 1-channel video amplifier has drivability for a load resistance of 150Ω. The output gain is +6dB (typ)
via LPF. DC offset is less than ±100mV.
MS1376-E-00
- 11 -
2012/02
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AK4203.PDF ] | |
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