AP130 Preliminary 1W Per Channel Stereo Class-D Audio Power Amplifier Document Title 1W Per Channel Stereo Class-D Audio Power Amplifier Revision History Rev. No. History Issue Date Remark 0.0 Initial issue October 8, 2001 Preliminary 0.1 Add Application Circuits and Important Notice November 7, 2001 Change document title from “2 Channel 1W Stereo Class-D Audio Power Amplifier” to “1W Per Channel Stereo Class-D Audio Power Amplifier” Important Notice: AMIC reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice. AMIC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of AMIC products in such applications is understood to be fully at the risk of the customer. PRELIMINARY (November, 2001, Version 0.1) AMIC Technology, Inc. AP130 Preliminary 1W Per Channel Stereo Class-D Audio Power Amplifier Features n n n n n n n n n 1 watt per channel with 8-ohm load Max. efficiency ≈ 80% with 8-ohm load at 5 volts Filterless Digital gain control Build-in depop circuitry Error protection for short circuit and over-temperature Mute (shutdown) current < 1µA typical Low operating current (4mA at 5 volts without load) TSSOP 24L package available General Description The AP130 is an oversampling class-D power amplifier for stereo audio applications. It provides high power-efficiency for filterless 8-ohm load. Build-in depop, mute and gain control features simplify the applications. BTL (Bridge-Tied-Load) configuration delivers up to 1 watt into 8-ohm load per channel at 5-V supply voltage. It allows direct coupling of the power signal. Reliability is improved through over-temperature and short circuit protections. The class-D power amplifier enables high efficiency applications for portable devices. Pin Configurations ~ ~ n TSSOP PGND 1 24 PGND OUTN1 2 23 OUTP1 G0 3 22 VREF PV DD 4 21 PV DD INN1 5 20 INP1 AGND 6 19 VDD AP130X 7 18 ERR 8 17 INP2 PV DD 9 16 PV DD SDB 10 15 G1 OUTN2 11 14 OUTP2 PGND 12 13 PGND ~ ~ OSC INN2 PRELIMINARY (November, 2001, Version 0.1) 1 AMIC Technology, Inc AP130 Block Diagram VDD PVDD VDD INN1 VGA Over Sampling Gate Driver OUTN1 PGND PVDD INP1 VGA Over Sampling Gate Driver OUTP1 PGND SDB G0 G1 Control Logic for Gain Control Internal Voltage Generator . Shut down, Depop Ramp Generator . Over-temperature protection ERR . Short circuit Protection OSC VREF PVDD INN2 VGA Over Samping Gate Driver OUTN2 PGND PVDD INP2 VGA Over Samping Gate Driver OUTP2 PGND AGND PRELIMINARY (November, 2001, Version 0.1) 2 AMIC Technology, Inc AP130 Pin Function Pin No. Signal Name I/O Function Description 6 AGND PWR Ground for Analog circuitry 22 VREF I/O Internal voltage reference 7 OSC I/O A 220pF capacitor connected to this pin sets the ramp frequency to ≈ 3µs 3 G0 I Bit 0 of gain control 15 G1 I Bit 1 of gain control 5 INN1 I Channel 1 negative differential input 20 INP1 I Channel 1 positive differential input 2 OUTN1 O Channel 1 negative output 23 OUTP1 O Channel 1 positive output PGND PWR Ground for noisy signals PVDD PWR Power supply for noisy signals 8 INN2 I Channel 2 negative differential input 17 INP2 I Channel 2 positive differential input 18 ERR O A high output at ERR indicates over-temperature, short circuit or depop in effect 11 OUTN2 O Channel 2 negative output 14 OUTP2 O Channel 2 positive output 10 SDB I 19 VDD PWR Logic low to shutdown the amplifiers; Logic high to enable normal operation of the amplifiers Power supply for analog circuitry 1, 12 13, 24 4, 9 16, 21 Absolute Maximum Ratings Over Operating Free-air Temperature Supply Voltage, VDD, PVDD …………………………………………………………………………………………………. -0.3V to 6V Input Voltage ……………………………………………………………………………………………………… -0.3V to VDD + 0.3V Operating Free-air Temperature Range ………………………………………………………………………………. -40°C to 85°C Operating Junction Temperature Range …………………………………………………………………………….. -40°C to 150°C Storage Temperature Range ………………………………………………………………………………………….. -65°C to 150°C PRELIMINARY (November, 2001, Version 0.1) 3 AMIC Technology, Inc AP130 Recommended Operating Conditions Supply voltage, VDD, PVDD High-level input voltage, VIH G0, G1, SDB Low-level input voltage, VIL G0, G1, SDB Min. Max. Unit 2.7 5.5 V 0.8 V 2 V Operating free-air temperature, TA -40 85 °C Ramp 200 400 kHz Electrical Characteristics, TA=25°°C, VDD=PVDD=5V (unless otherwise noted) Parameter Test Conditions VOO Output offset voltage VI = 0V PSRR Power supply rejection ratio VDD = PVDD = 2.7V to 5.5V IIH High-level input current VDD = PVDD = 5.5V, VI = VDD =PVDD IIL Low-level input current VDD = PVDD = 5.5V, VI = 0V IDD Supply current VDD = PVDD = 5.5V IDD(SD) Supply current (shutdown) Min. Typ. Max. Unit 10 mV -77 dB 1 µA µA -1 4 6 mA 1 µA Max. Unit Operating Characteristics, TA=25°°C, VDD=PVDD=5V, RL=8Ω Ω, Gain=8dB Parameter Test Conditions Min. Typ. PO Output power THD = 0.4%, f = 1kHz, RL = 8Ω 1 W THD+N Total harmonic distortion plus noise PO = 0.5W, f = 20Hz to 20kHz BOM Maximum output power bandwidth THD = 5% 20 kHz KSVR Supply ripple rejection ratio f = 1kHz C(VREF) = 0.4µF -60 dB SNR Signal-to-noise ratio 20Hz to 20kHz 87 dBV ZI Input impedance 20 kΩ <0.2% Gain Settings GAIN0 GAIN1 AMPLIFIER GAIN INPUT IMPEDANCE (dB) (kΩ Ω) Typ. Typ. 0 0 8 20 0 1 12 20 1 0 17.5 20 1 1 23.5 20 PRELIMINARY (November, 2001, Version 0.1) 4 AMIC Technology, Inc AP130 Application Circuits GND OUTN1 G0 120K 1 PGND PGND 24 2 OUTN1 OUTP1 23 3 G0 VREF 22 4 PVDD PVDD 21 5 INN1 INP1 20 0.1uF INN1 0.1uF OUTP1 100pF 0.1uF 10uF INP1 0.1uF AGND 6 AGND VDD 19 7 OSC ERR 18 8 INN2 INP2 17 9 PVDD PVDD 16 10 SDB G1 15 11 OUTN2 OUTP2 14 12 PGND PGND 13 AP130 220pF VDD 0.1uF 0.1uF INN2 INP2 0.1uF VDD 120K 0.1uF PVDD 0.1uF 10uF G1 S1 OUTN2 120K OUTP2 GND PRELIMINARY (November, 2001, Version 0.1) 5 AMIC Technology, Inc AP130 Ordering Information Part No. Package AP130X 24L TSSOP PRELIMINARY (November, 2001, Version 0.1) 6 AMIC Technology, Inc AP130 Package Information TSSOP 24L (4.40mm BODY) Outline Dimensions unit: inches/mm 1.0 E1 E Dtail "A" 1.0 Detail "A" θ2 0.20 D A GAUGE PLANE θ1 0.076MM SEATING PLANE e b A1 D A2 c R 0.25 R1 L θ3 L1 Dimensions in inches Symbol Min Nom Max Dimensions in mm Min Nom Max A - - 0.043 - - 1.20 A1 0.002 - 0.006 0.05 - 0.15 A2 0.031 0.035 0.041 0.80 0.90 1.05 L 0.020 0.024 0.030 0.50 0.60 0.75 L1 D 0.039 REF 0.303 E 0.307 1.0 REF 0.311 7.70 0.252 BSC 7.80 7.90 6.40 BSC E1 0.169 0.173 0.177 4.30 4.40 4.50 R 0.004 - - 0.09 - - R1 0.004 - - 0.09 - - b c 0.007 - 0.012 0.19 - 0.30 - 0.008 0.09 - 0.20 0.004 e θ1 0.026 BSC 0° 0.65 BSC - 8° 0° - θ2 12 REF 12 REF θ3 12 REF 12 REF 8° Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins. PRELIMINARY (November, 2001, Version 0.1) 7 AMIC Technology, Inc