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 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
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
Pin Configurations
n TSSOP
PGND
OUTN1
G0
PV
DD
INN1
AGND
OSC
INN2
PV
DD
SDB
OUTN2
PGND
1
2
3
4
5
6
7
8
9
10
11
12
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
~
~
AP130X
~
~
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.
24
23
22
21
20
19
18
17
16
15
14
13
PGND
OUTP1
VREF
PV
DD
INP1
V
DD
E
RR
INP2
PV
DD
G1
OUTP2
PGND
PRELIMINARY (November, 2001, Version 0.1) 1 AMIC Technology, Inc
Block Diagram
AP130
V
DD
INN1
INP1
SDB
G0
G1
OSC
VREF
INN2
Gain
Control
VGA
VGA
Internal Voltage
Generator
VGA
VDD
Ramp
Generator
Over
Sampling
Over
Sampling
Over
Samping
Gate
Driver
Gate
Driver
Control Logic for
. Shut down, Depop
Over-temperature protection
.
. Short circuit Protection
Gate
Driver
PVDD
OUTN1
PGND
PVDD
OUTP1
PGND
ERR
PVDD
OUTN2
PGND
PV
DD
INP2
VGA
AGND
Over
Samping
Gate
Driver
OUTP2
PGND
PRELIMINARY (November, 2001, Version 0.1) 2 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
3 G0 I
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
23 OUTP1 O Channel 1 positive output
OUTN1
A 220pF capacitor connected to this pin sets the ramp frequency to ≈ 3µs
Bit 0 of gain control
Channel 1 negative output
O
AP130
1, 12
13, 24
4, 9
16, 21
8
17 INP2 I Channel 2 positive differential input
18
11
14
10 SDB I
19 VDD PWR Power supply for analog circuitry
PGND PWR
PVDD PWR
INN2
ERR
OUTN2
OUTP2
I
O
O
O
Ground for noisy signals
Power supply for noisy signals
Channel 2 negative differential input
A high output at ERR indicates over-temperature, short circuit or depop in effect
Channel 2 negative output
Channel 2 positive output
Logic low to shutdown the amplifiers; Logic high to enable normal operation of the
amplifiers
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
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
Ramp 200 400 kHz
Electrical Characteristics, TA=25°°C, VDD=PVDD=5V (unless otherwise noted)
Parameter Test Conditions Min. Typ. Max. Unit
VOO
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
IIL Low-level input current VDD = PVDD = 5.5V, VI = 0V -1
IDD Supply current VDD = PVDD = 5.5V 4 6 mA
IDD(SD) Supply current (shutdown) 1
Output offset voltage VI = 0V 10 mV
Operating Characteristics, TA=25°°C, VDD=PVDD=5V, RL=8ΩΩ, Gain=8dB
AP130
°C
µA
µA
µA
Parameter Test Conditions Min. Typ. Max. Unit
PO Output power
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
SNR Signal-to-noise ratio 20Hz to 20kHz 87 dBV
ZI Input impedance 20
THD = 0.4%, f = 1kHz, RL = 8Ω
f = 1kHz C(VREF) = 0.4µF
1 W
-60 dB
Gain Settings
AMPLIFIER GAIN
GAIN0 GAIN1
0 0 8 20
0 1 12 20
1 0 17.5 20
1 1 23.5 20
(dB)
Typ. Typ.
INPUT IMPEDANCE
(kΩΩ)
kΩ
PRELIMINARY (November, 2001, Version 0.1) 4 AMIC Technology, Inc
Application Circuits
AP130
GND
OUTN1
G0
INN1
AGND
INN2
VDD
OUTN2
OUTP2
120K
S1
120K
0.1uF
220pF
0.1uF
0.1uF
0.1uF
10
11
12
1
2
3
4
5
6
7
8
9
PGND
OUTN1
G0
PVDD
INN1
AGND
OSC
INN2
PV
DD
SDB
OUTN2
PGND
AP130
PGND
OUTP1
VREF
PVDD
INP1
V
DD
ERR
INP2
PV
DD
G1
OUTP2
PGND
24
23
22
21
20
19
18
17
16
15
14
13
100pF
0.1uF 10uF
0.1uF
0.1uF
0.1uF
0.1uF 10uF
OUTP1
INP1
VDD
INP2
PVDD
G1
120K
GND
PRELIMINARY (November, 2001, Version 0.1) 5 AMIC Technology, Inc
Ordering Information
Part No. Package
AP130
AP130X
24L TSSOP
PRELIMINARY (November, 2001, Version 0.1) 6 AMIC Technology, Inc
AP130
Dimensions in inches
Dimensions in mm
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
L
0.039 REF
1.0 REF
D
0.303
0.307
0.311
7.70
7.80
7.90 E 0.252 BSC
6.40 BSC
E1
0.169
0.173
0.177
4.30
4.40
4.50
R
0.004 - -
0.09 - -
R
0.004 - -
0.09 - - b 0.007
-
0.012
0.19 - 0.30
c
θ1
0° - 8°
0° - 8°
θ2
12 REF
12 REF
θ3
12 REF
12 REF
Package Information
TSSOP 24L (4.40mm BODY) Outline Dimensions unit: inches/mm
Dtail "A"
E1
1.0
0.076MM
D
SEATING PLANE
1.0
D
b
e
E
θ
22
0.20
c
A
A2
A1
θ
33
Detail "A"
R1
R
0.25
GAUGE PLANE
θ
11
L
L1
Symbol
Min Nom Max Min Nom Max
PRELIMINARY (November, 2001, Version 0.1) 7 AMIC Technology, Inc
1
1
0.004 - 0.008 0.09 - 0.20
e 0.026 BSC 0.65 BSC
Notes:
1. The maximum value of dimension D includes end flash.
2. Dimension E does not include resin fins.
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