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| Stereo Headphone Amplifier Description The CO8301 is a monolithic integrated circuit and suitable dual amplifier for low power. 10-SSOP-225 (Preliminary) CO8301 Feature 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 1 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 Stereo Headphone Amplifier (Preliminary) CO8301 Block Diagram PS 1 POWER SAVE SWITCH CTL MUTE CTL 10 MUTE REF INA 2 9 OUTA 8 REF GND 3 GND REF INB 4 7 OUTB REF 5 REF 6 VCC * 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 Stereo Headphone Amplifier (Preliminary) CO8301 Pin Configuration 1 2 3 4 5 10 9 8 7 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. -20J ~ +75J. * 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 Stereo Headphone Amplifier (Preliminary) CO8301 Absolute Maximum Rating (Ta = 25J) Parameter Maximum Supply Voltage Power Dissipation Operating Temperature Storage Temperature Thermal Resistance Symbol VCC PD TOPR TSTG Tja Value 4.5 300 -20 ~ +75 -55 ~ +125 150 Unit V mW C C C/W Remark Maximum Supply Voltage Power Dissipation Operating Temperature Storage Temperature - Power Dissipation Curve Power dissipation (mW) 300 150 Ambient temperature, Ta (C) 25 75 125 Recommended Operating Conditions (Ta = 25J) Parameter Operating Supply Voltage Recommended Load Symbol VCC RL Min. 1.8 16 Typ. 3.0 Max. 4.0 32 Unit 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 4 of 9 Rev 0.1 Mar. 25, 2003 Fax:886-3-3521052 Stereo Headphone Amplifier (Preliminary) CO8301 Electrical Characteristics (RL =16[ Parameter Quiescent Current 1 Quiescent Current 2 Quiescent Current 3 Close Loop Voltage Gain 1 Close Loop Voltage Gain 2 Channel Balance 1 Channel Balance 2 Total Harmonic Distortion Ripple Rejection Ratio Crosstalk Output Noise Voltage Output Power PS Attenuation Ratio MUTE Attenuation Ratio PS ON Input Current MUTE OFF Input Current PS ON High Level MUTE OFF High Level Symbol ICC1 ICC2 ICC3 GVC1 GVC1 VCC = 2.4V , Rg =600[ Conditions , Ta = 25J Min. 30 29 - ) Typ. 5.5 1.0 32 32 0.5 60 50 60 40 0.2 0.2 0.65 0.65 100 -80 -80 1.0 1.0 Max. 10.0 2.0 1.0 34 34 1.0 1.0 1.5 Unit mA mA A dB dB dB dB % dB dB Vrms mW dB dB A A V V VCC = 4.5V, Mute = GND VCC = 4.5V, PS = GND VCC = 2.4V, f = 1kHz, VO = -10dBm VCC = 1.8V, f = 1kHz, VO = -20dBm VCC = 2.4V, f = 1kHz, VO = -10dBm VCC = 1.8V, f = 1kHz, VO = -20dBm VCC = 2.0V, f = 1kHz, PO = 1mW VCC = 1.8V, f = 100Hz, Rg = 1k, VR = -20dBm, BPF = 100Hz VCC = 2.4V, f = 100Hz, Rg = 1k, VO = -10dB VCC = 4.5V, Rg = 1k, BPF = 20Hz ~ 20kHz VCC = 3.0V, f = 1kHz, THD = 10% VCC = 1.8V, f = 100Hz, PS = GND, VIN = -10dB VCC = 1.8V, f = 100Hz, MUTE = GND, VIN = -10dB VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V VCC = 1.5V, VREF 0.85V GV1 GV2 THD RR CT VNOISE POUT ATTPS ATTMU IPSON IMOFF VHPS VHMU 43 43 20 0.5 0.5 * 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 Stereo Headphone Amplifier (Preliminary) CO8301 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 Stereo Headphone Amplifier (Preliminary) CO8301 Test Circuits RIPPLE RL RL 16 220uF 0.1uF 220uf 16 DC MUTE_SW I10 V10 4.7 2 4.7 0.1uF 1 4 MUTE OUTB OUTA GND CO8301 GND 1 4 PS_SW I1 2 3 V1 2 1 1 * 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 Rg Rg 2 22uF REF INA INB PS 1 2 3 4 5 VCC 10 9 8 7 6 4.7uF 3 A Stereo Headphone Amplifier (Preliminary) CO8301 Typical Application Circuits PHONE JACK STEREO 220uF 0.1uF 0.1uF MUTE_SW OFF 4.7 4.7 ON 220uf VDC MUTE OUTB OUTA GND CO8301 GND PS_SW OFF ON 4.7uF VR * 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 4.7uF Sg1 Sg2 VR 22uF REF INA INB 1 PS 2 3 4 5 VCC 10 9 8 7 6 4.7uF Stereo Headphone Amplifier (Preliminary) CO8301 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 |
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