AP130 AMICC | Alldatasheet
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Preliminary 1W Per Channel Stereo Class-D Audio Power Amplifier PRELIMINARY (November, 2001, Version 0.1) AMIC Technology, Inc. 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 a ny 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 AM IC products in such applications is understood to be fully at the risk of the customer.
Preliminary 1W Per Channel Stereo Class-D Audio Power Amplifier PRELIMINARY (November, 2001, Version 0.1) 1 AMIC Technology, Inc
Features
n 1 watt per channel with 8-ohm load n Max. efficiency ≈ 80% with 8-ohm load at 5 volts n Filterless n Digital gain control n Build-in depop circuitry n Error protection for short circuit and over-temperature n Mute (shutdown) current < 1µA typical n Low operating current (4mA at 5 volts without load) n 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 OUTP1 PGND VREF AP130X PGND OUTN1 2 PVDD INN2 PVDD OUTN2 PGND PV DD INP1 VDD ERR INP2 OSC INN1 AGND OUTP2 PGND ~~ ~~ SDB PVDD
PRELIMINARY (November, 2001, Version 0.1) 2 AMIC Technology, Inc Block Diagram VGA Gain Control Internal Voltage Generator Ramp Generator VGA VGA VGA Gate Driver INN1 INP1 SDB OSC ERR VREF INN2 INP2 AGND Over Sampling Over Sampling Over Samping Over Samping Gate Driver Gate Driver Gate Driver Control Logic for . Shut down, Depop . Over-temperature protection . Short circuit Protection VDD VDD PGND OUTP2 PVDD PGND OUTN2 PVDD PGND OUTP1 PVDD PGND OUTN1 PVDD
PRELIMINARY (November, 2001, Version 0.1) 3 AMIC Technology, Inc 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
1, 12 13, 24 PGND PWR Ground for noisy signals 4, 9 16, 21 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 Logic low to shutdown the amplifiers; Logic high to enable normal operation of the
19 VDD PWR Power supply for analog circuitry
Absolute Maximum Ratings Over Operating Free-air Temperature
PRELIMINARY (November, 2001, Version 0.1) 4 AMIC Technology, Inc Recommended Operating Conditions Min. Max. Unit Supply voltage, VDD, PVDD 2.7 5.5 V High-level input voltage, VIH G0, G1, SDB 2 V Low-level input voltage, VIL G0, G1, SDB 0.8 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 Min. Typ. Max. Unit VOO Output offset voltage VI = 0V 10 mV PSRR Power supply rejection ratio VDD = PVDD = 2.7V to 5.5V -77 dB IIH High-level input current VDD = PVDD = 5.5V, VI = VDD =PVDD 1 µA IIL Low-level input current VDD = PVDD = 5.5V, VI = 0V -1 µA IDD Supply current VDD = PVDD = 5.5V 4 6 mA IDD(SD) Supply current (shutdown) 1 µA Operating Characteristics, TA=25°°C, VDD=PVDD=5V, RL=8WW, Gain=8dB Parameter Test Conditions Min. Typ. Max. Unit 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 <0.2% 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 Gain Settings AMPLIFIER GAIN (dB) INPUT IMPEDANCE (kWW) GAIN0 GAIN1 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) 5 AMIC Technology, Inc Application Circuits AP130 PGND OUTN1 PVDD INN1 AGND OSC INN2 PVDD SDB OUTN2 PGND PGND OUTP1 VREF PVDD INP1 VDD ERR INP2 PVDD OUTP2 PGND GND OUTN1 OUTP1 100pF 0.1uF 10uF 0.1uF 10uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 120K 220pF 0.1uF INP1 VDD INP2 120K 0.1uF120K GND OUTP2 OUTN2 VDD INN2 AGND INN1 PVDD
PRELIMINARY (November, 2001, Version 0.1) 6 AMIC Technology, Inc
Ordering Information
Part No. Package AP130X 24L TSSOP
PRELIMINARY (November, 2001, Version 0.1) 7 AMIC Technology, Inc
Package Information
TSSOP 24L (4.40mm BODY) Outline Dimensions unit: inches/mm e Detail "A" b L c θ11 1.0 1.0 E SEATING PLANE Dtail "A" D 0.076MM D A 0.25 GAUGE PLANE θ33 θ22 R 0.20 Dimensions in inches Dimensions in mm Symbol Min Nom Max Min Nom Max A1 0.002 - 0.006 0.05 - 0.15 L1 0.039 REF 1.0 REF E 0.252 BSC 6.40 BSC b 0.007 - 0.012 0.19 - 0.30 c 0.004 - 0.008 0.09 - 0.20 e 0.026 BSC 0.65 BSC θ1 0° - 8° 0° - 8° θ2 12 REF 12 REF θ3 12 REF 12 REF Notes: 1. The maximum value of dimension D includes end flash. 2. Dimension E does not include resin fins.