TS2007_11 [STMICROELECTRONICS]
3 W filter-free Class D audio power amplifer with 6-12 dB fixed gain select; 3 W无滤波器D类音频放大器的功率与6-12 dB的固定增益选择
| 型号： | TS2007_11 |
| 厂家： | 
ST |
| 描述： | 3 W filter-free Class D audio power amplifer with 6-12 dB fixed gain select |
| 文件： | 总29页 (文件大小：492K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS2007
3 W filter-free Class D audio power amplifer with
6-12 dB fixed gain select
Features
■ Operating range from V = 2.4 V to 5.5 V
CC
■ Standby mode active low
TS2007IQT - DFN8
■ Output power: 1.4 W at 5 V or 0.45 W at 3.0 V
into 8 Ω with 1% THD+N max.
■ Output power: 2.3 W at 5 V or 0.75 W at 3.0 V
into 4 Ω with 1% THD+N max.
■ Fixed gain select: 6 dB or 12 dB
■ Low current consumption
■ Efficiency: 88% typ.
■ Signal-to-noise ratio: 94 dB typ.
■ PSRR: 63 dB typ at 217 Hz with 6 dB gain
■ PWM base frequency: 280 kHz
■ Low pop & click noise
TS2007IQT - DFN8
■ Thermal shutdown protection
■ DFN8 3 x 3 mm package
8
7
6
5
1
2
3
Applications
■ Cellular phones
■ PDAs
4
■ Notebook PCs
Description
The TS2007 is a class D power audio amplifier.
Able to drive up to 1.4 W into an 8 Ω load at 5 V, it
achieves outstanding efficiency compared to
typical class AB audio power amplifiers.
The TS2007 is available in DFN8 3 x 3 mm lead-
free packages.
This device allows switching between two
different gains: 6 or 12dB via a logic signal on the
GS pin. A pop & click reduction circuitry provides
low on/off switching noise while allowing the
device to start within 5 ms. A standby function
(active low) allows lowering the current
consumption down to 10 nA typ.
May 2011
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www.st.com
29
Contents
TS2007
Contents
1
2
3
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3
Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1
3.2
Electrical characteristic tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Gain settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Common-mode feedback loop limitations . . . . . . . . . . . . . . . . . . . . . . . . 22
Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Decoupling of the circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Wake-up time (twu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Shutdown time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Consumption in shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.10 Output filter considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5
6
7
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Absolute maximum ratings and operating conditions
1
Absolute maximum ratings and operating conditions
Table 1.
Symbol
Absolute maximum ratings
Parameter
Value
Unit
VCC
Vi
Supply voltage (1)
6
V
V
Input voltage (2)
GND to VCC
Toper
Tstg
Tj
Operating free air temperature range
Storage temperature
-40 to + 85
°C
-65 to +150
°C
Maximum junction temperature
Thermal resistance junction to ambient (3)
Power dissipation
150
°C
Rthja
Pd
200
°C/W
Internally limited(4)
ESD
ESD
HBM: human body model
MM: machine model
2
200
kV
V
Latch-up Latch-up immunity
Lead temperature (soldering, 10 sec)
Minimum load resistor
Class A
260
°C
RL
3.2
Ω
1. All voltage values are measured with respect to the ground pin.
2. The magnitude of the input signal must never exceed VCC + 0.3 V / GND - 0.3 V.
3. The device is protected in case of over temperature by a thermal shutdown active @ 150 °C.
4. Exceeding the power derating curves during a long period will cause abnormal operation.
Table 2.
Symbol
Operating conditions
Parameter
Value
Unit
VCC
VI
Supply voltage
2.4 to 5.5
GND to VCC
V
V
V
Input voltage range
Vic
Input common mode voltage(1)
Standby voltage input (2)
GND+0.15 V to VCC-0.7 V
VSTBY
V
V
Device ON
Device OFF
1.4 ≤ VSTBY ≤ VCC
GND ≤ VSTBY ≤ 0.4 (3)
Gain select input:
GS
Gain =12dB
Gain = 6dB
GND ≤ VGS ≤ 0.4
1.4 ≤ VGS ≤ VCC
RL
Load resistor
≥ 4
Ω
Rthja
Thermal resistance junction to ambient (4)
40
°C/W
1. I Voo I ≤ 35 mV max with both differential gains.
2. Without any signal on VSTBY, the device is in standby (internal 300 kΩ pull down resistor).
3. Minimum current consumption is obtained when VSTBY = GND.
4. When mounted on 4-layer PCB.
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Typical application
TS2007
2
Typical application
Figure 1.
Typical application schematics
VCC
VCC
Cs
1uF
Input capacitors
are optional
TS2007
OUT+
In-
GS
Vcc
Cin
4
3
8
5
IN-
-
Differential
Input
H
Gain
Select
Speaker
PWM
Bridge
+
IN+
OUT-
Cin
In+
Standby
Control
Oscillator
Gnd
Standby
VCC
VCC
VCC
Cs
1uF
Input capacitors
are optional
4
Ω
LC Output Filter
TS2007
OUT+
In-
GS
Vcc
15 H
μ
Cin
4
3
8
5
IN-
2
2
μ
F
F
-
Differential
Input
H
Gain
Select
PWM
Load
Bridge
+
IN+
OUT-
μ
15
30
30
μ
H
Cin
In+
Standby
Control
Oscillator
Gnd
Standby
μ
H
1
1
μ
F
F
μ
μ
H
8
Ω
LC Output Filter
VCC
Table 3.
External component descriptions
Components
Functional description
CS
Supply capacitor that provides power supply filtering.
Input coupling capacitors (optional) that block the DC voltage at the amplifier input
terminal. The capacitors also form a high pass filter with Zin
(Fcl = 1 / (2 x Pi x Zin x Cin)).
Cin
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Typical application
Table 4.
Pin descriptions
Pin name
Pin number
Pin description
Standby pin ( active low )
1
2
3
4
5
6
7
8
STBY
GS
Gain select input
IN+
Positive differential input
Negative differential input
Negative differential output
Power supply
IN-
OUT-
VCC
GND
OUT+
Ground
Positive differential output
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Electrical characteristics
TS2007
3
Electrical characteristics
3.1
Electrical characteristic tables
Table 5.
V
= +5 V, GND = 0 V, V =2.5 V, T
= 25 °C (unless otherwise specified)
CC
ic
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
ICC-STBY
Voo
2.3
3.3
mA
No input signal, no load
Standby current (1)
10
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
mV
Floating inputs, RL = 8Ω
Output power
THD = 1% max, f = 1 kHz, RL = 4 Ω
THD = 1% max, f = 1 kHz, RL = 8 Ω
THD = 10% max, f = 1 kHz, RL = 4 Ω
THD = 10% max, f = 1 kHz, RL = 8 Ω
2.3
1.4
2.8
1.7
Po
W
Total harmonic distortion + noise
THD + N
Efficiency
0.4
%
%
Po = 1WRMS, G = 6 dB, f =1 kHz, RL = 8 Ω
Efficiency
84
90
Po = 2.1 WRMS, RL = 4 Ω (with LC output filter)
Po = 1.3 WRMS, RL = 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, Cin=1µF (2)
PSRR
CMRR
Gain
dB
dB
dB
f = 217 Hz, RL = 8 Ω, Gain=6 dB,Vripple = 200 mVpp
f = 217 Hz, RL = 8 Ω, Gain=12 dB, Vripple = 200 mVpp
63
60
Common mode rejection ratio 20 Hz < f < 20 kHz
60
Gain value
11.5
5.5
12
6
12.5
6.5
GS =0 V
GS = VCC
Zin
Single input impedance (3)
68
75
82
kΩ
FPWM
Pulse width modulator base frequency
190
280
370
kHz
Signal-to-noise ratio (A-weighting)
SNR
tWU
94
5
dB
ms
Po=1.5 W, RL=4 Ω (with LC output filter)
Wake-up time
10
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TS2007
Table 5.
Electrical characteristics
V
= +5 V, GND = 0 V, V =2.5 V, T
= 25 °C (unless otherwise specified) (continued)
CC
ic
amb
Symbol
tSTBY
Parameter
Min.
Typ.
Max.
Unit
Standby time
5
ms
Output voltage noise f = 20 Hz to 20 kHz, RL=4 Ω
Unweighted (Filterless, G=6 dB)
A-weighted (Filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
74
50
69
49
94
65
86
64
VN
μVRMS
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217Hz.
3. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
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Electrical characteristics
TS2007
(1)
Table 6.
Symbol
V
= +4.2 V, GND = 0 V, V =2.1 V, T
= 25 °C (unless otherwise specified)
CC
ic
amb
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
ICC-STBY
Voo
2.1
3
mA
No input signal, no load
Standby current (2)
No input signal, VSTBY = GND
10
1000
25
nA
Output offset voltage
Floating inputs, RL = 8 Ω
mV
Output power
THD = 1% max, f = 1 kHz, RL = 4 Ω
THD = 1% max, f = 1 kHz, RL = 8 Ω
THD = 10% max, f = 1 kHz, RL = 4 Ω
THD = 10% max, f = 1 kHz, RL = 8 Ω
1.6
0.95
1.95
1.1
Po
W
Total harmonic distortion + noise
THD + N
Efficiency
0.45
%
%
Po = 800 mWRMS, G = 6 dB, f =1 kHz, RL = 8 Ω
Efficiency
Po = 1.5 WRMS, RL = 4 Ω (with LC output filter)
Po = 0.95 WRMS, RL = 8 Ω (with LC output filter)
85
90
Power supply rejection ratio with inputs grounded, Cin = 1 µF (3)
PSRR
CMRR
Gain
dB
dB
dB
f = 217 Hz, RL = 8 Ω, Gain = 6 dB,Vripple = 200 mVpp
f = 217 Hz, RL = 8 Ω, Gain = 12 dB, Vripple = 200 mVpp
63
60
Common mode rejection ratio 20 Hz < f < 20 kHz
60
Gain value
11.5
5.5
12.5
6.5
GS = 0 V
GS = VCC
12
6
Zin
Single input impedance (4)
68
75
82
kΩ
FPWM
Pulse width modulator base frequency
190
280
370
kHz
Signal-to-noise ratio (A-weighting)
SNR
93
dB
Po=1.2 W, RL=4 Ω (with LC output filter)
tWU
Wake-up time
5
5
10
ms
ms
tSTBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, RL=4 Ω
Unweighted (Filterless, G=6 dB)
A-weighted (Filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
72
50
68
49
93
65
85
64
VN
μVRMS
1. All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2. Standby mode is active when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz.
4. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
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Electrical characteristics
(1)
Table 7.
Symbol
V
= +3.6 V, GND = 0 V, V =1.8 V, T
= 25 °C (unless otherwise specified)
CC
ic
amb
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
ICC-STBY
Voo
2
2.8
mA
No input signal, no load
Standby current (2)
10
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
mV
Floating inputs, RL = 8 Ω
Output power
1.1
0.65
THD+N = 1% max, f = 1 kHz, RL = 4 Ω
THD+N = 1% max, f = 1 kHz, RL = 8 Ω
THD = 10% max, f = 1 kHz, RL = 4 Ω
THD = 10% max, f = 1 kHz, RL = 8 Ω
Po
W
1.4
0.85
Total harmonic distortion + noise
THD + N
Efficiency
0.3
%
%
Po = 500 mWRMS, G = 6 dB, f = 1 kHz, RL = 8 Ω
Efficiency
84
90
Po = 1.1 WRMS, RL = 4 Ω (with LC output filter)
Po = 0.65 WRMS, RL = 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, Cin=1 µF (3)
PSRR
CMRR
Gain
dB
dB
dB
f = 217 Hz, RL = 8 Ω, Gain = 6 dB, Vripple = 200 mVpp
f = 217 Hz, RL = 8 Ω, Gain = 12 dB, Vripple = 200 mVpp
63
60
Common mode rejection ratio 20 Hz < f < 20 kHz
60
Gain value
11.5
5.5
12
6
12.5
6.5
GS = 0 V
GS = VCC
Zin
Single input impedance (4)
68
75
82
kΩ
FPWM
Pulse width modulator base frequency
190
280
370
kHz
Signal-to-noise ratio (A-weighting)
SNR
92
dB
Po = 0.9 W, RL = 4 Ω (with LC output filter)
tWU
Wake-up time
5
5
10
ms
ms
tSTBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, RL=4 Ω
Unweighted (Filterless, G=6 dB)
A-weighted (Filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
72
50
68
49
93
65
85
64
VN
μVRMS
1. All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2. Standby mode is active when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz.
4. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
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Electrical characteristics
TS2007
(1)
Table 8.
Symbol
V
= +3.0 V, GND = 0 V, V =1.5 V, T
= 25 °C (unless otherwise specified)
CC
ic
amb
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
ICC-STBY
Voo
1.9
2.7
mA
No input signal, no load
Standby current (2)
10
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
mV
Floating inputs, RL = 8 Ω
Output power
0.75
0.45
1
THD+N = 1% Max, f = 1 kHz, RL = 4 Ω
THD+N = 1% Max, f = 1 kHz, RL = 8 Ω
THD = 10% Max, f = 1 kHz, RL = 4 Ω
THD = 10% Max, f = 1 kHz, RL = 8 Ω
Po
W
0.6
Total harmonic distortion + noise
THD + N
Efficiency
0.5
%
%
Po = 400 mWRMS, G = 6 dB, f = 1 kHz, RL = 8 Ω
Efficiency
83
90
Po = 0.75 WRMS, RL = 4 Ω (with LC output filter)
Po = 0.45 WRMS, RL = 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, Cin = 1 µF (3)
PSRR
CMRR
Gain
dB
dB
dB
f = 217 Hz, RL = 8 Ω, Gain=6 dB,Vripple = 200 mVpp
f = 217 Hz, RL = 8 Ω, Gain=12 dB, Vripple = 200 mVpp
63
60
Common mode rejection ratio 20 Hz < f < 20 kHz
60
Gain value
11.5
5.5
12
6
12.5
6.5
GS = 0 V
GS = VCC
Zin
Single input impedance (4)
68
75
82
kΩ
FPWM
Pulse width modulator base frequency
190
280
370
kHz
Signal-to-noise ratio (A-weighting)
SNR
90
dB
Po = 0.6 W, RL = 4 Ω (with LC output filter)
tWU
Wake-up time
5
5
10
ms
ms
tSTBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, RL=4 Ω
Unweighted (Filterless, G=6 dB)
A-weighted (Filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (Filterless, G=12 dB)
A-weighted (Filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
71
50
67
49
92
65
85
64
VN
μVRMS
1. All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V.
2. Standby mode is active when VSTBY is tied to GND.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz.
4. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
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TS2007
Table 9.
Electrical characteristics
V
= +2.4 V, GND = 0 V, V =1.2 V, T
= 25 °C (unless otherwise specified)
CC
ic
amb
Symbol
Parameter
Min.
Typ.
Max.
Unit
Supply current
ICC
ICC-STBY
Voo
1.7
2.4
mA
No input signal, no load
Standby current (1)
10
1000
25
nA
No input signal, VSTBY = GND
Output offset voltage
mV
Floating inputs, RL = 8 Ω
Output power
0.48
0.3
0.6
THD+N = 1% Max, f = 1 kHz, RL = 4 Ω
THD+N = 1% Max, f = 1 kHz, RL = 8 Ω
THD = 10% Max, f = 1 kHz, RL = 4 Ω
THD = 10% Max, f = 1 kHz, RL = 8 Ω
Po
W
0.36
Total harmonic distortion + noise
THD + N
Efficiency
0.1
%
%
Po = 200 mWRMS, G = 6 dB, f = 1 kHz, RL = 8 Ω
Efficiency
82
90
Po = 0.38 WRMS, RL = 4 Ω (with LC output filter)
Po = 0.25 WRMS, RL = 8 Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, Cin = 1 µF (2)
PSRR
CMRR
Gain
dB
dB
dB
f = 217 Hz, RL = 8 Ω, Gain=6 dB,Vripple = 200 mVpp
f = 217 Hz, RL = 8 Ω, Gain=12 dB, Vripple = 200 mVpp
63
60
Common mode rejection ratio 20 Hz < f < 20 kHz
60
Gain value
11.5
5.5
12
6
12.5
6.5
GS = 0 V
GS = VCC
Zin
Single input impedance (3)
68
75
82
kΩ
FPWM
Pulse width modulator base frequency
190
280
370
kHz
Signal-to-noise ratio (A-weighting)
SNR
88
dB
Po=0.4 W, RL=4 Ω (with LC output filter)
tWU
Wake-up time
5
5
10
ms
ms
tSTBY
Standby time
Output voltage noise f = 20 Hz to 20 kHz, RL = 4 Ω
Unweighted (filterless, G=6 dB)
A-weighted (filterless, G=6 dB)
Unweighted (with LC output filter, G=6 dB)
A-weighted (with LC output filter, G=6 dB)
Unweighted (filterless, G=12 dB)
A-weighted (filterless, G=12 dB)
Unweighted (with LC output filter, G=12 dB)
A-weighted (with LC output filter, G=12 dB)
70
50
66
49
91
65
84
64
VN
μVRMS
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz.
3. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
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Electrical characteristics
TS2007
3.2
Electrical characteristic curves
The graphs shown in this section use the following abbreviations:
●
R + 15 µH or 30 µH = pure resistor + very low series resistance inductor
L
●
Filter = LC output filter (1 µF+30 µH for 4 Ω and 0.5 µF+60 µH for 8 Ω)
All measurements are done with C =1 µF and C =100 nF (see Figure 2, except for the
S1
S2
PSRR where C is removed (see Figure 3).
S1
Figure 2.
Test diagram for measurements
Cs1
1 F
μ
Cs2
100nF
VCC
GND
GND
RL
4 or 8
Cin
Cin
Ω
Out+
In+
5th order
50kHz
15 H or 30 H
μ
μ
TS2007
or
LC Filter
low-pass filter
In-
Out-
GND
Audio Measurement
Bandwith < 30kHz
Figure 3.
Test diagram for PSRR measurements
Cs2
100nF
VCC
20Hz to 20kHz
Vripple
Vcc
GND
GND
1 F
Cin
μ
RL
4 or 8
Ω
Out+
In+
5th order
50kHz
15 H or 30 H
μ
μ
TS2007
or
LC Filter
low-pass filter
In-
Out-
Cin
1 F
μ
GND
GND
5th order
50kHz
RMS Selective Measurement
Bandwith =1% of Fmeas
reference
low-pass filter
12/29
Doc ID 13123 Rev 4
TS2007
Electrical characteristics
Figure
Table 10. Index of graphics
Description
Current consumption vs. power supply voltage
Current consumption vs. standby voltage
Efficiency vs. output power
Figure 4
Figure 5
Figure 6 - Figure 9
Figure 10, Figure 11
Figure 12
Output power vs. power supply voltage
PSRR vs. common mode input voltage
PSRR vs. frequency
Figure 13 - Figure 17
Figure 18
CMRR vs. common mode input voltage
CMRR vs. frequency
Figure 19 - Figure 23
Figure 24, Figure 25
Figure 26 - Figure 33
Figure 34 - Figure 45
Figure 46
Gain vs. frequency
THD+N vs. output power
THD+N vs. frequency
Power derating curves
Startup and shutdown time
Figure 47 - Figure 49
Doc ID 13123 Rev 4
13/29
Electrical characteristics
TS2007
Figure 4.
Current consumption vs. power
supply voltage
Figure 5.
Current consumption vs. standby
voltage
3.0
2.5
2.0
1.5
1.0
0.5
TAMB=25°C
No Loads
2.5
2.0
1.5
1.0
0.5
0.0
VCC=5V
VCC=3.6V
VCC=2.4V
No Load
TAMB=25°C
0.0
0
2
3
4
5
1
2
3
4
5
Power Supply Voltage (V)
Standby Voltage (V)
Figure 6.
Efficiency vs. output power
Figure 7.
Efficiency vs. output power
100
80
200
160
120
80
100
80
500
400
300
200
100
0
Efficiency
Efficiency
60
60
Power
Dissipation
40
40
Power
Dissipation
Vcc=3V
Vcc=5V
20
40
20
RL=4
Ω + ≥ 15μH
RL=4
F=1kHz
THD+N
Ω
+
≥
15
μH
F=1kHz
THD+N
0.6
≤
1%
0.7
≤
1%
0
0.0
0
0.8
0
0.0
0.1
0.2
0.3
0.4
0.5
0.5
1.0
1.5
2.0
2.5
Output Power (W)
Output Power (W)
Figure 8.
Efficiency vs. output power
Figure 9.
Efficiency vs. output power
100
80
50
40
30
20
10
0
100
80
125
100
75
50
25
0
Efficiency
Efficiency
60
60
Power
Dissipation
Power
40
40
Dissipation
Vcc=3V
Vcc=5V
20
20
RL=8
F=1kHz
THD+N
Ω
+
≥
15
μ
H
RL=8
Ω + ≥ 15μH
F=1kHz
≤
1%
THD+N
1.0
≤
1%
0
0.0
0
0.0
0.1
0.2
0.3
0.4
0.5
0.2
0.4
0.6
0.8
1.2
1.4
Output Power (W)
Output Power (W)
14/29
Doc ID 13123 Rev 4
TS2007
Electrical characteristics
Figure 10. Output power vs. power supply
voltage
Figure 11. Output power vs. power supply
voltage
3.5
2.0
RL = 4
F = 1kHz
BW < 30kHz
Tamb = 25
Ω
+
≥
15
μ
H
RL = 8
F = 1kHz
BW < 30kHz
Tamb = 25°C
Ω + ≥ 15μH
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1.6
1.2
0.8
0.4
0.0
°
C
THD+N=10%
THD+N=10%
THD+N=1%
THD+N=1%
2
3
4
5
6
2
3
4
5
6
Power Supply Voltage (V)
Power Supply Voltage (V)
Figure 12. PSRR vs. common mode input
voltage
Figure 13. PSRR vs. frequency
0
0
Inputs grounded, Vripple = 200mVpp,
-10
Ω +15μH, CIN=1μF, TAMB=25°C
Vripple = 200mVpp, F = 217Hz, G = 6dB
-10
VCC=5V, RL=4
RL
≥ 4Ω + ≥ 15μH, Tamb = 25°C
-20
-30
-40
-50
-60
-70
-80
-20
-30
-40
-50
-60
-70
-80
Gain=12dB
Vcc=2.4V
Vcc=3.6, 4.2, 5V
Vcc=3V
Gain=6dB
100
1k
10k 20k
20
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Common Mode Input Voltage (V)
Frequency (Hz)
Figure 14. PSRR vs. frequency
Figure 15. PSRR vs. frequency
0
0
Inputs grounded, Vripple = 200mVpp
Inputs grounded, Vripple = 200mVpp
AV=6dB, RL=4Ω+30μH, CIN=1μF, TAMB=25°C
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
AV=6dB, RL=4
Ω
+15
μ
H, CIN=1
μ
F, TAMB=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
Vcc=2.4, 3, 3.6, 4.2, 5V
100
1k
Frequency (Hz)
10k 20k
100
1k
Frequency (Hz)
10k 20k
20
20
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15/29
Electrical characteristics
TS2007
Figure 16. PSRR vs. frequency
Figure 17. PSRR vs. frequency
0
0
Inputs grounded, Vripple = 200mVpp
Inputs grounded, Vripple = 200mVpp
AV=6dB, RL=8Ω+30μH, CIN=1μF, TAMB=25°C
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
AV=6dB, RL=8
Ω
+15
μ
H, CIN=1
μ
F, TAMB=25°C
Vcc=2.4, 3, 3.6, 4.2, 5V
Vcc=2.4, 3, 3.6, 4.2, 5V
100
1k
Frequency (Hz)
10k 20k
100
1k
Frequency (Hz)
10k 20k
20
20
Figure 18. CMRR vs. common mode input
voltage
Figure 19. CMRR vs. frequency
0
0
Δ
Vicm=200mVpp, VCC=5V
Δ
Vicm=200mVpp, F = 217Hz, G=6dB
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
RL 15 H, TAMB=25°C
≥
4
Ω
+
≥
μ
RL=4 +15 H, CIN=1 F, TAMB=25°C
Ω
μ
μ
Vcc=2.4V
Vcc=3.6, 4.2, 5V
Vcc=3V
Gain=12dB
Gain=6dB
100
1k
10k 20k
20
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Common Mode Input Voltage (V)
Frequency (Hz)
Figure 20. CMRR vs. frequency
Figure 21. CMRR vs. frequency
0
0
Δ
Vicm=200mVpp, G=6dB
Δ
Vicm=200mVpp, G=6dB
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
RL +15 H, CIN=1 F, TAMB=25°C
=
4
Ω
μ
μ
RL +30 H, CIN=1 F, TAMB=25°C
=
4
Ω
μ
μ
Vcc=2.4, 3, 3.6, 4.2, 5V
Vcc=2.4, 3, 3.6, 4.2, 5V
100
1k
Frequency (Hz)
10k 20k
100
1k
Frequency (Hz)
10k 20k
20
20
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Doc ID 13123 Rev 4
TS2007
Electrical characteristics
Figure 22. CMRR vs. frequency
Figure 23. CMRR vs. frequency
0
0
-10
-20
-30
-40
-50
-60
-70
-80
Δ
Vicm=200mVpp, G=6dB
Δ
Vicm=200mVpp, G=6dB
-10
-20
-30
-40
-50
-60
-70
-80
RL +15 H, CIN=1 F, TAMB=25°C
=
8
Ω
μ
μ
RL +30 H, CIN=1 F, TAMB=25°C
=
8
Ω
μ
μ
Vcc=2.4, 3, 3.6, 4.2, 5V
Vcc=2.4, 3, 3.6, 4.2, 5V
100
1k
Frequency (Hz)
10k 20k
100
1k
Frequency (Hz)
10k 20k
20
20
Figure 24. Gain vs. frequency
Figure 25. Gain vs. frequency
14
8
no load
no load
12
10
8
6
4
RL=8
Ω
+15
μH
RL=8
Ω
+15
μH
RL=8
Ω
+30
μ
H
RL=8
Ω
+30
μ
H
2
0
RL=4
Ω
+15μH
RL=4
Ω
+15μH
Gain = 12dB
Vin = 500 mVpp
TAMB = 25
Gain = 6dB
Vin = 500 mVpp
TAMB = 25
RL=4Ω+30μH
RL=4Ω+30μH
°
C
°
C
6
20k
20
100
1k
Frequency (Hz)
10k
20k
20
100
1k
Frequency (Hz)
10k
Figure 26. THD+N vs. output power
Figure 27. THD+N vs. output power
10
10
Vcc=5V
RL = 4Ω + 15μH
RL = 4Ω + 30μH
Vcc=5V
F = 1kHz
F = 1kHz
G = 6dB
BW < 30kHz
Tamb = 25°C
Vcc=3.6V
Vcc=2.4V
G = 6dB
BW < 30kHz
Tamb = 25
Vcc=3.6V
°
C
Vcc=2.4V
1
1
0.1
0.1
1E-3
0.01
0.1
1
1E-3
0.01
0.1
1
3
3
Output Power (W)
Output Power (W)
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Electrical characteristics
TS2007
Figure 28. THD+N vs. output power
Figure 29. THD+N vs. output power
10
10
Vcc=5V
Vcc=5V
RL = 8
Ω
+ 15
μ
H
RL = 8Ω + 30μH
F = 1kHz
G = 6dB
BW < 30kHz
Tamb = 25
F = 1kHz
G = 6dB
BW < 30kHz
Tamb = 25°C
Vcc=3.6V
Vcc=3.6V
Vcc=2.4V
Vcc=2.4V
°
C
1
1
0.1
0.1
1E-3
0.01
0.1
1
2
1E-3
0.01
0.1
1
2
Output Power (W)
Output Power (W)
Figure 30. THD+N vs. output power
Figure 31. THD+N vs. output power
10
10
Vcc=5V
Vcc=5V
RL = 4
Ω
+ 15
μ
H
RL = 4Ω + 30μH
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25
F = 100Hz
G = 6dB
BW < 30kHz
Tamb = 25°C
Vcc=3.6V
Vcc=2.4V
Vcc=3.6V
Vcc=2.4V
1
0.1
1
0.1
°
C
0.01
1E-3
0.01
1E-3
0.01
0.1
1
0.01
0.1
1
3
3
Output Power (W)
Output Power (W)
Figure 32. THD+N vs. output power
Figure 33. THD+N vs. output power
10
10
Vcc=5V
Vcc=5V
RL = 8
Ω
+ 15
μ
H
RL = 8Ω + 30μH
Vcc=3.6V
Vcc=2.4V
F = 100Hz
G = 6dB
BW < 30kHz
F = 100Hz
G = 6dB
BW < 30kHz
Vcc=3.6V
Vcc=2.4V
1
0.1
1
0.1
Tamb = 25
°
C
Tamb = 25°C
0.01
1E-3
0.01
1E-3
0.01
0.1
1
2
0.01
0.1
1
2
Output Power (W)
Output Power (W)
18/29
Doc ID 13123 Rev 4
TS2007
Electrical characteristics
Figure 34. THD+N vs. frequency
Figure 35. THD+N vs. frequency
10
10
RL=4
Ω + 15μH
RL=4
Ω + 30μH
G=6dB
Bw < 30kHz
Vcc=2.4V
G=6dB
Bw < 30kHz
Vcc=2.4V
Po=0.4W
Po=0.4W
1
0.1
1
Tamb = 25°C
Tamb = 25°C
0.1
0.01
Po=0.2W
Po=0.2W
0.01
20
100
1000
10000 20k
10000 20k
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
Frequency (Hz)
Figure 36. THD+N vs. frequency
Figure 37. THD+N vs. frequency
10
10
RL=8
Ω + 15μH
RL=8
G=6dB
Ω + 30μH
G=6dB
Bw < 30kHz
Vcc=2.4V
Po=0.2W
Bw < 30kHz
Vcc=2.4V
Tamb = 25°C
Po=0.2W
1
0.1
1
0.1
Tamb = 25°C
Po=0.1W
Po=0.1W
0.01
0.01
20
100
1000
Frequency (Hz)
20
100
1000
Frequency (Hz)
10000 20k
Figure 38. THD+N vs. frequency
Figure 39. THD+N vs. frequency
10
10
RL=4
Ω + 15μH
RL=4
G=6dB
Ω + 30μH
G=6dB
Bw < 30kHz
Vcc=3.6V
Tamb = 25°C
Bw < 30kHz
Vcc=3.6V
Tamb = 25°C
Po=0.9W
Po=0.9W
1
0.1
1
0.1
Po=0.45W
Po=0.45W
0.01
0.01
20
100
1000
Frequency (Hz)
20
100
1000
10000 20k
Frequency (Hz)
Doc ID 13123 Rev 4
19/29
Electrical characteristics
TS2007
Figure 40. THD+N vs. frequency
Figure 41. THD+N vs. frequency
10
10
RL=8
G=6dB
Ω + 15μH
RL=8
G=6dB
Ω + 30μH
Po=0.5W
Bw < 30kHz
Vcc=3.6V
Bw < 30kHz
Vcc=3.6V
Po=0.5W
1
0.1
1
0.1
Tamb = 25°C
Tamb = 25°C
Po=0.25W
Po=0.25W
0.01
0.01
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
10000 20k
10000 20k
Figure 42. THD+N vs. frequency
Figure 43. THD+N vs. frequency
10
10
RL=4
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Ω + 30μH
RL=4
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Ω + 15μH
Po=1.5W
Po=1.5W
1
0.1
1
0.1
Po=0.75W
Po=0.75W
0.01
0.01
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
Figure 44. THD+N vs. frequency
Figure 45. THD+N vs. frequency
10
10
RL=8
G=6dB
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Ω + 15μH
RL=8
G=6dB
Ω + 30μH
Po=0.9W
Bw < 30kHz
Vcc=5V
Tamb = 25°C
Po=0.9W
1
0.1
1
0.1
Po=0.45W
Po=0.45W
0.01
0.01
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
20/29
Doc ID 13123 Rev 4
TS2007
Electrical characteristics
Figure 46. Power derating curves
Figure 47. Startup and shutdown phase
=5 V, G=6 dB, C =1 µF, inputs
V
CC
in
grounded
3.5
3.0
Mounted on a 4-layer PCB
2.5
2.0
1.5
1.0
0.5
0.0
No Heat sink
0
25
50
75
100
C)
125
150
Ambiant Temperature (
°
Figure 48. Startup and shutdown phase
=5 V, G=6 dB, C =1 µF,
Figure 49. Startup and shutdown phase
V
V
=5 V, G=12 dB, C =1 µF,
CC
in
CC in
V =1 V , F=10 kHz
V =1 V , F=10 kHz
in
pp
in pp
Doc ID 13123 Rev 4
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Application information
TS2007
4
Application information
4.1
Differential configuration principle
The TS2007 is a monolithic fully-differential input/output class D power amplifier. The
TS2007 also includes a common-mode feedback loop that controls the output bias value to
average it at V /2 for any DC common-mode input voltage. This allows the device to
CC
always have a maximum output voltage swing, and by consequence, maximize the output
power. Moreover, as the load is connected differentially compared to a single-ended
topology, the output is four times higher for the same power supply voltage.
The advantages of a full-differential amplifier are:
●
●
●
High PSRR (power supply rejection ratio)
High common-mode noise rejection
Virtually zero pop without additional circuitry, giving a faster startup time compared to
conventional single-ended input amplifiers
●
●
Easier interfacing with differential output audio DAC
No input coupling capacitors required thanks to common-mode feedback loop
4.2
Gain settings
In the flat region of the frequency-response curve (no input coupling capacitor or internal
feedback loop + load effect), the differential gain can be set to either 6 or 12 dB depending
on the logic level of the GS pin:
GS
Gain (dB)
Gain (V/V)
1
0
6 dB
2
4
12 dB
Note:
Between the GS pin and V there is an internal 300 kΩ resistor. When the pin is floating
CC
the gain is 6 dB.
4.3
Common-mode feedback loop limitations
As explained previously, the common-mode feedback loop allows the output DC bias
voltage to be averaged at V /2 for any DC common-mode bias input voltage.
CC
Due to the V limitation of the input stage (see Table 2: Operating conditions on page 3), the
ic
common-mode feedback loop can fulfill its role only within the defined range.
4.4
Low frequency response
If a low frequency bandwidth limitation is required, it is possible to use input coupling
capacitors. In the low frequency region, the input coupling capacitor C starts to have an
in
effect. C forms, with the input impedance Z , a first order high-pass filter with a -3 dB cutoff
in
in
frequency (see Table 5 to Table 9).
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Doc ID 13123 Rev 4
TS2007
Application information
1
FCL = ------------------------------------
2 ⋅ π ⋅ Zin ⋅ Cin
So, for a desired cutoff frequency F we can calculate C :
CL
in
1
Cin = -------------------------------------
2 ⋅ π ⋅ Zin ⋅ FCL
with F in Hz, Z in Ω and C in F.
CL
in
in
The input impedance Z is for the whole power supply voltage range, typically 75 kΩ . There
in
is also a tolerance around the typical value (see Table 5 to Table 9). With regard to the
tolerance, you can also calculate tolerance of F
:
CL
●
FCLmax = 1.103 ⋅ FCL
FCLmin = 0.915 ⋅ FCL
●
4.5
Decoupling of the circuit
A power supply capacitor, referred to as C is needed to correctly bypass the TS2007.
S,
The TS2007 has a typical switching frequency of 280 kHz and output fall and rise time of
about 5 ns. Due to these very fast transients, careful decoupling is mandatory.
A 1 µF ceramic capacitor is enough, but it must be located very close to the TS2007 in order
to avoid any extra parasitic inductance created by a long track wire. Parasitic loop
inductance, in relation with di/dt, introduces overvoltage that decreases the global efficiency
of the device and may cause, if this parasitic inductance is too high, a TS2007 breakdown.
In addition, even if a ceramic capacitor has an adequate high frequency ESR value, its
current capability is also important. A 0603 size is a good compromise, particularly when a
4 Ω load is used.
Another important parameter is the rated voltage of the capacitor. A 1µF/6.3V capacitor
used at 5 V, loses about 50% of its value. With a power supply voltage of 5 V, the decoupling
value, instead of 1 µF, could be reduced to 0.5 µF. As C has particular influence on the
S
THD+N in the medium to high frequency region, this capacitor variation becomes decisive.
In addition, less decoupling means higher overshoots which can be problematic if they reach
the power supply AMR value (6 V).
4.6
Wake-up time (twu)
When the standby is released to set the device ON, there is a wait of 5 ms typically. The
TS2007 has an internal digital delay that mutes the outputs and releases them after this
time in order to avoid any pop noise.
Note:
The gain increases smoothly (see Figure 49) from the mute to the gain selected by the GS
pin (Section 4.2).
Doc ID 13123 Rev 4
23/29
Application information
TS2007
4.7
Shutdown time
When the standby command is set, the time required to put the two output stages into high
impedance and to put the internal circuitry in shutdown mode, is typically 5 ms. This time is
used to decrease the gain and avoid any pop noise during shutdown.
Note:
The gain decreases smoothly until the outputs are muted (see Figure 49).
4.8
Consumption in shutdown mode
Between the shutdown pin and GND there is an internal 300 kΩ resistor. This resistor forces
the TS2007 to be in shutdown when the shutdown input is left floating.
However, this resistor also introduces additional shutdown power consumption if the
shutdown pin voltage is not 0 V.
Referring to Table 2: Operating conditions on page 3, with a 0.4 V shutdown voltage pin for
example, you must add 0.4V/300k = 1.3 µA in typical (0.4V/273 k = 1.46 µA in maximum) to
the shutdown current specified in Table 5 to Table 9.
4.9
Single-ended input configuration
It is possible to use the TS2007 in a single-ended input configuration. However, input
coupling capacitors are needed in this configuration. The following schematic diagram
shows a typical single-ended input application.
Figure 50. Typical application for single-ended input configuration
VCC
Cs
1uF
Gain Select Control
TS2007
GS
Vcc
Input
Cin
Cin
4
3
8
5
IN-
OUT+
OUT-
-
H
Bridge
Gain
Select
Speaker
PWM
+
IN+
Standby
Control
Oscillator
Gnd
Standby
Standby Control
24/29
Doc ID 13123 Rev 4
TS2007
Application information
4.10
Output filter considerations
The TS2007 is designed to operate without an output filter. However, due to very sharp
transients on the TS2007 output, EMI radiated emissions may cause some standard
compliance issues.
These EMI standard compliance issues can appear if the distance between the TS2007
outputs and loudspeaker terminal are long (typically more than 50 mm, or 100 mm in both
directions, to the speaker terminals). As the PCB layout and internal equipment device are
different for each configuration, it is difficult to provide a one-size-fits-all solution.
However, to decrease the probability of EMI issues, there are several simple rules to follow:
●
Reduce, as much as possible, the distance between the TS2007 output pins and the
speaker terminals.
●
●
Use a ground plane for “shielding” sensitive wires.
Place, as close as possible to the TS2007 and in-series with each output, a ferrite bead
with a rated current of minimum 2.5 A and impedance greater than 50 Ω at frequencies
above 30 MHz. If, after testing, these ferrite beads are not necessary, replace them by
a short-circuit.
●
Allow extra footprint to place, if necessary, a capacitor to short perturbations to ground
(see Figure 51).
Figure 51. Ferrite chip bead placement
Ferrite chip bead
From TS2007 output
to speaker
about 100pF
gnd
In the case where the distance between the TS2007 output and the speaker terminals is too
long, it is possible to have low frequency EMI issues due to the fact that the typical operating
frequency is 280 kHz. In this configuration, it is necessary to use the output filter
represented in Figure 1 on page 4 as close as possible to the TS2007.
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Package information
TS2007
5
Package information
In order to meet environmental requirements, STMicroelectronics offers these devices in
®
ECOPACK packages. These packages have a lead-free second level interconnect. The
category of second level interconnect is marked on the package and on the inner box label,
in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics
trademark. ECOPACK specifications are available at: www.st.com.
Figure 52. Pinout (top view)
8
7
6
5
1
2
3
4
Figure 53. Marking (top view)
Logo: ST
Part number: K007
Three digit date code: YWW
The dot is for marking pin 1
Figure 54. Recommended footprint for the TS2007 DFN8 package
1.8 mm
0.8 mm
0.35 mm
2.2 mm
0.65 mm
1.4 mm
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Doc ID 13123 Rev 4
TS2007
Package information
Figure 55. DFN8 package mechanical data
Dimensions
Ref
Millimeters
Typ
Mils
Min
Max
Min
Typ
Max
A
A1
A3
b
0.50
0.60
0.02
0.65
0.05
0.22
0.35
3.15
1.80
3.15
1.30
19.6
23.6
0.8
25.6
1.9
8.6
0.25
2.85
1.60
2.85
1.10
0.30
3.00
1.70
3.00
1.20
0.65
0.55
9.8
112.2
63
11.8
118.1
66.9
13.8
124
70.8
124
51.2
D
D2
E
112.2
43.3
118.1
47.2
E2
e
25.5
L(1)
ddd
0.50
0.60
0.08
19.6
21.6
23.6
3.1
SEATING
PLANE
C
D
e
1
2
3
4
8
6
5
7
b
D2
1. The dimension of L is not compliant with JEDEC MO-248 which recommends 0.40 mm +/-0.10 mm.
Note:
The DFN8 package has an exposed pad E2 x D2. For enhanced thermal performance, the
exposed pad must be soldered to a copper area on the PCB, acting as a heatsink. This
copper area can be electrically connected to pin 7 or left floating.
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Ordering information
TS2007
6
Ordering information
Table 11. Order code
Part number
Temperature range
Package
Marking
K07
TS2007IQT
-40 °C, +85 °C
DFN8
7
Revision history
Date
Revision
Changes
Initial release (preliminary data).
11-Jan-2007
1
First complete datasheet. This release of the datasheet includes
electrical characteristics curves and application information.
11-May-2007
2
Corrected error in Table 4: Pin descriptions: descriptions of pin 5 and pin
8 were inverted.
24-May-2007
02-May-2011
3
4
Added minimum RL to Table 1: Absolute maximum ratings
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Doc ID 13123 Rev 4
TS2007
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Doc ID 13123 Rev 4
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