www.fairchildsemi.com FAN7000D Low Power Amplifier Features Description • • • • • The FAN7000D is a monolithic integrated circuit and suitable dual amplifier for low power. Low Quiescent Current High Power Supply Ripple Rejection Low Voltage Operation A few of External Part Required Built in Power Save Switch & Mute Switch 10-SSOP-225 Typical Applications • • • • • • Portable Compact Disk Player (DISCMAN) Portable Mini Disk Player (MD) Disc-Man MP3 Player CD-ROM Other Potable Compact Disk Media Fan Motor Drive 1 Ordering Information Device Package Operating Temp. FAN7000D 10-SSOP-225 -20°C ~ +75°C FAN7000DTF 10-SSOP-225 -20°C ~ +75°C Rev. 1.0.5 ©2002 Fairchild Semiconductor Corporation FAN7000D Pin Assignments MUTE OUTA GND OUTB VCC 10 9 8 7 6 FAN7000D 1 2 3 4 5 PS INA GND INB REF Pin Definitions 2 Pin Number Pin Name Pin Function Description 1 PS Power Save Switch 2 INA Signal Input A 3 GND Signal Ground 4 INB Signal Input B 5 REF Reference Voltage 6 VCC Supply Voltage 7 OUTB Signal Output B 8 GND Power Ground 9 OUTA Signal Output A 10 MUTE Mute On Switch FAN7000D Internal 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 3 FAN7000D Absolute Maximum Ratings (Ta = 25°°C) Parameter Maximum Supply Voltage Symbol Value Unit VCC 4.5 V Remark Maximum Supply Voltage PD 300 mW Operating Temperature TOPR -20 ~ +75 °C Operating Temperature Storage Temperature TSTG -55 ~ +125 °C Storage Temperature Tja 150 °C/W Power Dissipation Thermal Resistance Power Dissipation - Power Dissipation Curve Power dissipation (mW) 300 150 Ambient temperature, Ta (°C) 25 75 125 Recommended Operating Conditions (Ta = 25°°C) Parameter Operating Supply Voltage Recommended Load 4 Symbol Min. Typ. Max. Unit VCC 1.8 3.0 4.0 V RL 16 - 32 Ω FAN7000D Electrical Characteristics (RL = 16Ω, Rg = 600Ω, Ta = 25°C) 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 5 FAN7000D 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 FAN7000D, so that it makes FAN7000D 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 FAN7000D off. 3. AMP Block This block diagram describes the AMP block with resistances, which control gain of FAN7000D. V V IN OUT ≅ 40 ≅ 32 [ dB ] The gain of FAN7000D is -------------- Output voltage of FAN7000D 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) 6 FAN7000D Test Circuits I1 I10 1 1 2 PS_SW 1 3 4 1 PS 2 2 INA V1 3 Rg GND 1 4 2 22uF INB 5 Rg REF F A N 7 0 0 0 D 2 MUTE_SW 10 MUT E 4 3 220uF 0.1uF 9 RL OUTA 4.7Ω Ω 16Ω V10 8 GND RL 4.7Ω Ω 7 16Ω 0.1uF OUTB 6 220uF DC RIPPLE 4.7uF A Vcc 7 FAN7000D Typical Application Circuits ON OFF PS_SW OFF 1 PS 2 VR INA 3 4.7uF GND 4.7uF VR 4 Sg1 Sg2 22uF INB 5 REF 8 10 F A N 7 0 0 0 D MUT E ON 220uF 0.1uF 9 L-ch OUTA 4.7Ω Ω 8 GND R-ch 4.7Ω Ω 7 0.1uF OUTB 6 Vcc 220uF 4.7uF VDC FAN7000D Package Dimensions 10-SSOP-225 9 FAN7000D DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 7/16/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation