CERAMATE CO8301

CO8301
(Preliminary)
Stereo Headphone Amplifier
Description
The CO8301 is a monolithic integrated circuit and
suitable dual amplifier for low power.
Feature
10-SSOP-225
1
l Low quiescent current
l High power supply ripple rejection
l Low voltage operation
l A few of external part required
l Built in power save switch
l Built in mute switch
Typical Applications
l Portable compact disk player (DISCMAN)
l Portable mini disk player (MD)
l Disc-Man
l MP3 Player
l CD-Rom
l Other portable compact Disk Media Fan Motor Driver
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 1 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Block Diagram
PS
1
POWER SAVE SWITCH CTL
MUTE CTL
REF
INA
10
MUTE
9
OUTA
2
8
GND
REF
GND
3
REF
INB
4
REF
5
7
OUTB
6
VCC
REF
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 2 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Pin Configuration
1
10
2
9
3
8
4
7
5
6
1-Power save switch
2-Signal input A
3-Signal ground
4-signal input B
5-Reference voltage
6-Supply voltage
7-Signal output B
8-Power ground
9-Signal output A
10-Mute on switch
Ordering Information
Device
CO8301
Package
10-SSOP-225
Operating Temp.
-20℃ ~ +75℃.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 3 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Absolute Maximum Rating (Ta = 25℃)
Parameter
Symbol
Value
Unit
VCC
4.5
V
PD
300
mW
Operating Temperature
TOPR
-20 ~ +75
°C
Operating Temperature
Storage Temperature
TSTG
-55 ~ +125
°C
Storage Temperature
Tja
150
°C/W
Maximum Supply Voltage
Power Dissipation
Thermal Resistance
Remark
Maximum Supply Voltage
Power Dissipation
-
Power Dissipation Curve
Power dissipation (mW)
300
150
Ambient temperature, Ta (°C)
25
75
125
Recommended Operating Conditions (Ta = 25℃)
Parameter
Operating Supply Voltage
Recommended Load
Symbol
Min.
Typ.
Max.
Unit
VCC
1.8
3.0
4.0
V
RL
16
-
32
Ω
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 4 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Electrical Characteristics (RL =16Ω, Rg =600Ω, Ta = 25℃)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Quiescent Current 1
ICC1
VCC = 2.4V
-
5.5
10.0
mA
Quiescent Current 2
ICC2
VCC = 4.5V, Mute = GND
-
1.0
2.0
mA
Quiescent Current 3
ICC3
VCC = 4.5V, PS = GND
-
-
1.0
µA
Close Loop Voltage Gain 1
GVC1
VCC = 2.4V, f = 1kHz,
VO = -10dBm
30
32
34
dB
Close Loop Voltage Gain 2
GVC1
VCC = 1.8V, f = 1kHz,
VO = -20dBm
29
32
34
dB
Channel Balance 1
∆GV1
VCC = 2.4V, f = 1kHz,
VO = -10dBm
-
-
1.0
dB
Channel Balance 2
∆GV2
VCC = 1.8V, f = 1kHz,
VO = -20dBm
-
-
1.0
dB
Total Harmonic Distortion
THD
VCC = 2.0V, f = 1kHz,
PO = 1mW
-
1.5
%
0.5
Ripple Rejection Ratio
RR
VCC = 1.8V, f = 100Hz,
Rg = 1kΩ, VR = -20dBm,
BPF = 100Hz
43
60
Crosstalk
CT
VCC = 2.4V, f = 100Hz,
Rg = 1kΩ, VO = -10dB
43
50
VNOISE
VCC = 4.5V, Rg = 1kΩ,
BPF = 20Hz ~ 20kHz
Output Power
POUT
VCC = 3.0V, f = 1kHz,
THD = 10%
PS Attenuation Ratio
ATTPS
MUTE Attenuation Ratio
Output Noise Voltage
-
-
60
dB
100
-
dB
µVrms
20
40
mW
VCC = 1.8V, f = 100Hz,
PS = GND, VIN = -10dB
-
-
-80
dB
ATTMU
VCC = 1.8V, f = 100Hz,
MUTE = GND, VIN = -10dB
-
-
-80
dB
PS ON Input Current
IPSON
VCC = 1.5V, VREF ≥ 0.85V
-
0.2
1.0
µA
MUTE OFF Input Current
IMOFF
VCC = 1.5V, VREF ≥ 0.85V
-
0.2
1.0
µA
PS ON High Level
VHPS
VCC = 1.5V, VREF ≥ 0.85V
0.5
0.65
-
V
MUTE OFF High Level
VHMU
VCC = 1.5V, VREF ≥ 0.85V
0.5
0.65
-
V
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 5 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Application Information
1. PS Block
This block diagram describes the power save switch circuits.
The drive block is controlled by PS pin, which can be derived from micro controller.
It controls bias of the internal circuits of CO8301, so that it makes CO8301 operate when input voltage level reaches
high level.
2. Mute Block
The block diagram describes the mute on switch circuits.
The drive block is controlled by MUTE pin, which can be derived from micro controller.
When the pin of mute turns on, it makes reference voltage of internal circuits approximately 0V, so that it keeps the device of
CO8301 off.
3. AMP Block
This block diagram describes the AMP block with resistances, which control gain of CO8301.
The gain of CO8301 is
VOUT
-------------- ≅ 40 ≅ 32 [ dB ]
V IN
Output voltage of CO8301 can be 40 times as much as input voltage, so it eliminates the number of external circuits and
offers headphone input.
4. Popping Noise Reduction
If PS pin (Pin1 , Power save switch) connect the micro controller, the micro controller must follow the same sequence 1 in
order to reduce popping noise on mute mode.
PS on → Mute on → PS off → Mute operation → PS on → Mute off → Normal operation (Sequence 1) If PS connect
VCC, the micro controller follow the sequence 2.
Mute on → Mute Operation → Mute off → Normal operation (Sequence 2)
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 6 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
RL
A
4.7uF
4.7
4.7
0.1uF
220uf
16
16
0.1uF
220uF
V10
MUTE_SW
VCC
6
OUTB
7
8
GND
OUTA
22uF
REF
5
INB
4
3
GND
INA
2
1
2
Rg
1
2
Rg
1
3
PS_SW
I1
2
V1
4
1
PS
CO8301
9
10
MUTE
4
1
3
2
I10
RL
DC
RIPPLE
Test Circuits
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 7 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
VDC
220uf
0.1uF
7
OUTB
6
VCC
INB
5
REF
GND
4
8
OUTA
INA
Sg2
Sg1
4.7uF
VR
4.7uF
VR
PS_SW
ON
OFF
22uF
GND
3
1
PS
CO8301
9
2
10
MUTE
4.7uF
4.7
4.7
0.1uF
220uF
ON
MUTE_SW
OFF
PHONE JACK STEREO
Typical Application Circuits
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 8 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052
CO8301
(Preliminary)
Stereo Headphone Amplifier
Package Dimensions
10-SSOP-225
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: server@ceramate.com.tw
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 9 of 9
Rev 0.1 Mar. 25, 2003
Fax:886-3-3521052