TS487-1 [STMICROELECTRONICS]
100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE; 100mW的立体声耳机具有待机模式放大器
| 型号： | TS487-1 |
| 厂家： | 
ST |
| 描述： | 100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE |
| 文件： | 总31页 (文件大小：1104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS486
TS487
100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY
MODE
■ OPERATING FROM Vcc=2V to 5.5V
■ STANDBY MODE ACTIVE LOW (TS486) or
HIGH (TS487)
PIN CONNECTIONS (top view)
TS486IDT: SO8, TS486IST, TS486-1IST,
TS486-2IST, TS486-4IST: MiniSO8
■ OUTPUT POWER: 102mW @5V, 38mW
@3.3V into 16Ω with 0.1% THD+N max (1kHz)
■ LOW CURRENT CONSUMPTION: 2.5mA max
■ High Signal-to-Noise ratio: 103dB(A) at 5V
■ High Crosstalk immunity: 83dB (F=1kHz)
■ PSRR: 58 dB (F=1kHz), inputs grounded
■ ON/OFF click reduction circuitry
1
2
3
4
8
7
6
5
VCC
OUT (1)
OUT (2)
VIN (2)
VIN (1)
BYPASS
■ Unity-Gain Stable
GND
SHUTDOWN
■ SHORT CIRCUIT LIMITATION
■Available in SO8, MiniSO8 & DFN 3x3mm
DESCRIPTION
The TS486/7 is a dual audio power amplifier capa-
ble of driving, in single-ended mode, either a 16 or
a 32Ω stereo headset.
TS486-IQT, TS486-1IQT, TS486-2IQT, TS486-4IQT:
DFN8
Capable of descending to low voltages, it delivers
up to 90mW per channel (into 16Ω loads) of con-
tinuous average power with 0.3% THD+N in the
audio bandwitdth from a 5V power supply.
An externally-controlled standby mode reduces
the supply current to 10nA (typ.). The unity gain
stable TS486/7 can be configured by external
gain-setting resistors or used in a fixed gain ver-
sion.
1
2
3
4
OUT (1)
8
7
6
5
Vcc
VIN (1)
OUT (2)
VIN (2)
BYPASS
GND
SHUTDOWN
TS487IDT: SO8, TS487IST, TS487-1IST,
TS487-2IST, TS487-4IST: MiniSO8
APPLICATIONS
■Headphone Amplifier
■ Mobile phone, PDA, computer motherboard
■ High end TV, portable audio player
1
2
3
4
8
7
6
5
VCC
OUT (1)
OUT (2)
VIN (1)
BYPASS
VIN (2)
ORDER CODE
SHUTDOWN
GND
Package
Part
Number
Temperature
Range: I
Gain Marking
D
S
Q
TS486
•
•
external TS486I
external TS487I
external K86A
TS487-IQT,
TS487-1IQT, TS487-2IQT, TS487-4IQT: DFN8
TS487
TS486
•
•
TS486-1
TS486-2
TS486-4
TS487
tba tba x1/0dB
tba tba x2/6dB
K86B
K86C
1
2
3
4
OUT (1)
8
7
6
5
Vcc
-40, +85°C
tba tba x4/12dB K86D
external K87A
VIN (1)
OUT (2)
VIN (2)
BYPASS
•
•
GND
SHUTDOWN
TS487-1
TS487-2
TS487-4
tba tba x1/0dB
tba tba x2/6dB
K87B
K87C
tba tba x4/12dB K87D
MiniSO & DFN only available in Tape & Reel with T suffix,
SO is available in Tube (D) and in Tape & Reel (DT)
June 2003
1/31
TS486-TS487
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
1)
V
6
V
V
Supply voltage
CC
V
-0.3v to VCC +0.3v
-65 to +150
150
Input Voltage
i
T
Storage Temperature
°C
°C
stg
T
Maximum Junction Temperature
j
Thermal Resistance Junction to Ambient
R
°C/W
thja
SO8
MiniSO8
DFN8
175
215
70
2)
Power Dissipation
0.71
0.58
1.79
SO8
MiniSO8
DFN8
Pd
W
3)
ESD
ESD
1.5
100
200
250
kV
V
Human Body Model (pin to pin): TS486, TS487
Machine Model - 220pF - 240pF (pin to pin)
Latch-up Latch-up Immunity (All pins)
Lead Temperature (soldering, 10sec)
Output Short-Circuit to Vcc or GND
mA
°C
4)
continous
1. All voltage values are measured with respect to the ground pin.
2. Pd has been calculated with Tamb = 25°C, Tjunction = 150°C.
3. TS487 stands 1.5KV on all pins except standby pin which stands 1KV.
4. Attention must be paid to continous power dissipation (V x 300mA). Exposure of the IC to a short circuit for an extended time period is
DD
dramatically reducing product life expectancy.
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
Supply Voltage
Load Resistor
2 to 5.5
≥ 16
V
Ω
CC
R
L
T
Operating Free Air Temperature Range
-40 to + 85
°C
oper
Load Capacitor
R = 16 to 100Ω
C
400
100
pF
V
L
L
R > 100Ω
L
Standby Voltage Input
1.5 ≤ V
≤ V
V
STB
CC
1)
TS486 ACTIVE / TS487 in STANDBY
TS486 in STANDBY / TS487 ACTIVE
STB
GND ≤ V
≤ 0.4
STB
Thermal Resistance Junction to Ambient
SO8
MiniSO8
150
190
41
R
°C/W
THJA
2)
DFN8
1.
The minimum current consumption (I ) is guaranteed at GND (TS486) or VCC (TS487) for the whole temperature range.
STANDBY
2. When mounted on a 4-layer PCB.
2/31
TS486-TS487
FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS
VCC from +5V to +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
1)
R
20
kΩ
Input Resistance
IN 1,2
Gain value for Gain TS486/TS487-1
Gain value for Gain TS486/TS487-2
Gain value for Gain TS486/TS487-4
0dB
6dB
G
dB
12dB
1.
See figure 30 to establish the value of Cin vs. -3dB cut off frequency.
APPLICATION COMPONENTS INFORMATION
Components
Functional Description
Inverting input resistor which sets the closed loop gain in conjunction with R
. This resistor also
FEED
R
C
IN1,2
IN1,2
forms a high pass filter with C (fc = 1 / (2 x Pi x R x C )) . Not needed in fixed gain versions.
IN
IN
IN
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminal.
Feedback resistor which sets the closed loop gain in conjunction with R .
IN
R
FEED1,2
A = Closed Loop Gain= -R
/R . Not needed in fixed gain versions.
FEED IN
V
C
Supply Bypass capacitor which provides power supply filtering.
Bypass capacitor which provides half supply filtering.
S
C
B
Output coupling capacitor which blocks the DC voltage at the load input terminal.
C
OUT1,2
This capacitor also forms a high pass filter with RL (fc = 1 / (2 x Pi x R x C
)).
L
OUT
TYPICAL APPLICATION SCHEMATICS
3/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
1.8
10
Max.
2.5
Unit
Supply Current
No input signal, no load
I
mA
CC
Standby Current
No input signal, V
=GND for TS486, R =32Ω
=Vcc for TS487, R =32Ω
I
1000
nA
STANDBY
STANDBY
L
STANDBY
No input signal, V
L
V
Input Offset Voltage (V
= V /2)
1
mV
nA
IO
ICM CC
1)
I
90
200
Input Bias Current (V
Output Power
= V /2)
CC
IB
ICM
THD+N = 0.1% Max, F = 1kHz, R = 32Ω
L
64
65
102
108
THD+N = 1% Max, F = 1kHz, R = 32Ω
P
60
95
mW
%
L
O
THD+N = 0.1% Max, F = 1kHz, R = 16Ω
L
THD+N = 1% Max, F = 1kHz, R = 16Ω
L
Total Harmonic Distortion + Noise (A =-1)
v
R = 32Ω, P = 60mW, 20Hz ≤ F ≤ 20kHz
THD + N
PSRR
0.3
0.3
L
out
R = 16Ω, P = 90mW, 20Hz ≤ F ≤ 20kHz
L
out
2)
Power Supply Rejection Ratio, inputs grounded
53
58
dB
(A =-1), RL>=16Ω, C =1µF, F = 1kHz, Vripple = 200mVpp
v
B
Max Output Current
I
106
115
mA
O
THD +N ≤ 1%, R = 16Ω connected between out and V /2
L
CC
Output Swing
V
V
V
V
: R = 32Ω
OL
OH
OL
OH
L
0.45
4.52
0.6
0.5
0.7
: R = 32Ω
V
4.45
4.2
V
L
O
: R = 16Ω
L
4.35
: R = 16Ω
L
2)
Signal-to-Noise Ratio (A weighted, A =-1)
v
SNR
80
103
dB
(R = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
L
Channel Separation, R = 32Ω, A =-1
L
v
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R = 16Ω, A =-1
83
79
Crosstalk
dB
L
v
80
72
F = 1kHz
F = 20Hz to 20kHz
C
Input Capacitance
1
pF
I
Gain Bandwidth Product (R = 32Ω)
GBP
SR
1.1
0.4
MHz
V/µs
L
Slew Rate, Unity Gain Inverting (R = 16Ω)
L
1. Only for external gain version.
2. Guaranteed by design and evaluation.
4/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
CC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified) 1)
V
Symbol
Parameter
Min.
Typ.
1.8
10
Max.
2.5
Unit
Supply Current
No input signal, no load
I
mA
CC
Standby Current
No input signal, V
=GND for TS486, R =32Ω
=Vcc for TS487, R =32Ω
I
1000
nA
STANDBY
STANDBY
L
STANDBY
No input signal, V
L
V
Input Offset Voltage (V
= V /2)
1
mV
nA
IO
ICM CC
2)
I
90
200
Input Bias Current (V
Output Power
= V /2)
CC
IB
ICM
THD+N = 0.1% Max, F = 1kHz, R = 32Ω
L
26
28
38
42
THD+N = 1% Max, F = 1kHz, R = 32Ω
P
23
36
mW
%
L
O
THD+N = 0.1% Max, F = 1kHz, R = 16Ω
L
THD+N = 1% Max, F = 1kHz, R = 16Ω
L
Total Harmonic Distortion + Noise (A =-1)
v
R = 32Ω, P = 16mW, 20Hz ≤ F ≤ 20kHz
THD + N
PSRR
0.3
0.3
L
out
R = 16Ω, P = 35mW, 20Hz ≤ F ≤ 20kHz
L
out
3)
Power Supply Rejection Ratio, inputs grounded
53
64
58
75
dB
(A =-1), RL>=16Ω, C =1µF, F = 1kHz, Vripple = 200mVpp
v
B
Max Output Current
I
mA
O
THD +N ≤ 1%, R = 16Ω connected between out and V /2
L
CC
Output Swing
V
V
V
V
: R = 32Ω
OL
OH
OL
OH
L
0.3
3
0.45
0.38
0.52
: R = 32Ω
V
2.85
2.68
V
L
O
: R = 16Ω
L
2.85
: R = 16Ω
L
3)
Signal-to-Noise Ratio (A weighted, A =-1)
v
SNR
80
98
dB
(R = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
L
Channel Separation, R = 32Ω, A =-1
L
v
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R = 16Ω, A =-1
80
76
Crosstalk
dB
L
v
77
69
F = 1kHz
F = 20Hz to 20kHz
C
Input Capacitance
1
pF
I
Gain Bandwidth Product (R = 32Ω)
GBP
SR
1.1
0.4
MHz
V/µs
L
Slew Rate, Unity Gain Inverting (R = 16Ω)
L
1.
All electrical values are guaranted with correlation measurements at 2V and 5V.
2. Only for external gain version.
3. Guaranteed by design and evaluation.
5/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
V
CC = +2.5V, GND = 0V, Tamb = 25°C (unless otherwise specified)1)
Symbol
Parameter
Min.
Typ.
1.7
10
Max.
2.5
Unit
Supply Current
No input signal, no load
I
mA
CC
Standby Current
No input signal, V
=GND for TS486, R =32Ω
=Vcc for TS487, R =32Ω
I
1000
nA
STANDBY
STANDBY
L
STANDBY
No input signal, V
L
V
Input Offset Voltage (V
= V /2)
1
mV
nA
IO
ICM CC
2)
I
90
200
Input Bias Current (V
Output Power
= V /2)
CC
IB
ICM
THD+N = 0.1% Max, F = 1kHz, R = 32Ω
L
13
14
21
22
THD+N = 1% Max, F = 1kHz, R = 32Ω
P
12.5
17.5
mW
%
L
O
THD+N = 0.1% Max, F = 1kHz, R = 16Ω
L
THD+N = 1% Max, F = 1kHz, R = 16Ω
L
Total Harmonic Distortion + Noise (A =-1)
v
R = 32Ω, P = 10mW, 20Hz ≤ F ≤ 20kHz
THD + N
PSRR
0.3
0.3
L
out
R = 16Ω, P = 16mW, 20Hz ≤ F ≤ 20kHz
L
out
3)
Power Supply Rejection Ratio, inputs grounded
53
45
58
56
dB
(A =-1), RL>=16Ω, C =1µF, F = 1kHz, Vripple = 200mVpp
v
B
Max Output Current
I
mA
O
THD +N ≤ 1%, R = 16Ω connected between out and V /2
L
CC
Output Swing
V
V
V
V
: R = 32Ω
OL
OH
OL
OH
L
0.25
2.25
0.35
2.15
0.32
0.45
: R = 32Ω
V
2.14
1.97
V
L
O
: R = 16Ω
L
: R = 16Ω
L
3)
Signal-to-Noise Ratio (A weighted, A =-1)
v
SNR
80
95
dB
(R = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
L
Channel Separation, R = 32Ω, A =-1
L
v
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R = 16Ω, A =-1
80
76
Crosstalk
dB
L
v
77
69
F = 1kHz
F = 20Hz to 20kHz
C
Input Capacitance
1
pF
I
Gain Bandwidth Product (R = 32Ω)
GBP
SR
1.1
0.4
MHz
V/µs
L
Slew Rate, Unity Gain Inverting (R = 16Ω)
L
1.
All electrical values are guaranted with correlation measurements at 2V and 5V.
2. Only for external gain version.
3. Guaranteed by design and evaluation.
6/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
CC = +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
V
Symbol
Parameter
Min.
Typ.
1.7
10
Max.
2.5
Unit
Supply Current
No input signal, no load
I
mA
CC
Standby Current
No input signal, V
=GND for TS486, R =32Ω
=Vcc for TS487, R =32Ω
I
1000
nA
STANDBY
STANDBY
L
STANDBY
No input signal, V
L
V
Input Offset Voltage (V
= V /2)
1
mV
nA
IO
ICM CC
1)
I
90
200
Input Bias Current (V
Output Power
= V /2)
CC
IB
ICM
THD+N = 0.1% Max, F = 1kHz, R = 32Ω
L
8
9
THD+N = 1% Max, F = 1kHz, R = 32Ω
P
7
mW
%
L
O
THD+N = 0.3% Max, F = 1kHz, R = 16Ω
12
13
L
9.5
THD+N = 1% Max, F = 1kHz, R = 16Ω
L
Total Harmonic Distortion + Noise (A =-1)
v
R = 32Ω, P = 6.5mW, 20Hz ≤ F ≤ 20kHz
THD + N
PSRR
0.3
0.3
L
out
R = 16Ω, P = 8mW, 20Hz ≤ F ≤ 20kHz
L
out
2)
Power Supply Rejection Ratio, inputs grounded
52
33
57
41
dB
(A =-1), RL>=16Ω, C =1µF, F = 1kHz, Vripple = 200mVpp
v
B
Max Output Current
I
mA
O
THD +N ≤ 1%, R = 16Ω connected between out and V /2
L
CC
Output Swing
V
V
V
V
: R = 32Ω
OL
OH
OL
OH
L
0.24
1.73
0.33
1.63
0.29
0.41
: R = 32Ω
V
1.67
1.53
V
L
O
: R = 16Ω
L
: R = 16Ω
L
2)
Signal-to-Noise Ratio (A weighted, A =-1)
v
SNR
80
93
dB
(R = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
L
Channel Separation, R = 32Ω, A =-1
L
v
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R = 16Ω, A =-1
80
76
Crosstalk
dB
L
v
77
69
F = 1kHz
F = 20Hz to 20kHz
C
Input Capacitance
1
pF
I
Gain Bandwidth Product (R = 32Ω)
GBP
SR
1.1
0.4
MHz
V/µs
L
Slew Rate, Unity Gain Inverting (R = 16Ω)
L
1. Only for external gain version.
2. Guaranteed by design and evaluation.
7/31
TS486-TS487
Index of Graphs
Description
Figure
Page
Common Curves
Open Loop Gain and Phase vs Frequency
Current Consumption vs Power Supply Voltage
Current Consumption vs Standby Voltage
Output Power vs Power Supply Voltage
Output Power vs Load Resistor
Power Dissipation vs Output Power
Power Derating vs Ambiant Temperature
Output Voltage Swing vs Supply Voltage
Low Frequency Cut Off vs Input Capacitor for fixed gain versions
Curves With 0dB Gain Setting (Av=-1)
THD + N vs Output Power
1 to 10
11
9 to 10
10
12 to 17
18 to19
20 to 23
24 to 27
28
10 to 11
11 to 12
12
12 to 13
13
29
13
30
13
31 to 39
40 to 42
43 to 48
49 to 50
51 to 56
14 to 15
15
THD + N vs Frequency
Crosstalk vs Frequency
16
Signal to Noise Ratio vs Power Supply Voltage
PSRR vs Frequency
17
17 to 18
Curves With 6dB Gain Setting (Av=-2)
THD + N vs Output Power
57 to 65
66 to 68
69 to 72
73 to 74
75 to 79
19 to 20
20
THD + N vs Frequency
Crosstalk vs Frequency
21
Signal to Noise Ratio vs Power Supply Voltage
PSRR vs Frequency
21
22
Curves With 12dB Gain Setting (Av=-4)
THD + N vs Output Power
80 to 88
89 to 91
92 to 95
96 to 97
98 to 102
22 to 24
24
THD + N vs Frequency
Crosstalk vs Frequency
24
Signal to Noise Ratio vs Power Supply Voltage
PSRR vs Frequency
25
26
8/31
TS486-TS487
Fig. 1: Open Loop Gain and Phase vs
Frequency
Fig. 2: Open Loop Gain and Phase vs
Frequency
180
160
140
120
100
80
180
160
140
120
100
80
Vcc = 5V
ZL = 16
Tamb = 25
Vcc = 5V
ZL = 16Ω+400pF
Tamb = 25°C
80
80
60
40
Ω
Gain
Gain
°C
60
40
20
0
Phase
Phase
20
0
60
60
40
40
20
20
-20
-40
-20
-40
0
0
-20
10000
-20
10000
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
Fig. 3: Open Loop Gain and Phase vs
Frequency
Fig. 4: Open Loop Gain and Phase vs
Frequency
180
160
140
120
100
80
180
160
140
120
100
80
Vcc = 2V
ZL = 16
Tamb = 25
Vcc = 2V
ZL = 16Ω+400pF
Tamb = 25°C
80
80
60
40
20
0
Ω
Gain
Gain
°C
60
40
20
0
Phase
Phase
60
60
40
40
20
20
-20
-40
-20
-40
0
0
-20
10000
-20
10000
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
Fig. 5: Open Loop Gain and Phase vs
Frequency
Fig. 6: Open Loop Gain and Phase vs
Frequency
180
160
140
120
100
80
180
160
140
120
100
80
Vcc = 5V
ZL = 32
Tamb = 25
Vcc = 5V
80
60
40
20
0
80
Ω
+400pF
ZL = 32
Ω
Gain
Gain
°C
Tamb = 25°C
60
40
20
0
Phase
Phase
60
60
40
40
20
20
-20
-40
-20
-40
0
0
-20
10000
-20
10000
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
9/31
TS486-TS487
Fig. 7: Open Loop Gain and Phase vs
Frequency
Fig. 8: Open Loop Gain and Phase vs
Frequency
180
160
140
120
100
80
180
160
140
120
100
80
Vcc = 2V
ZL = 32
Tamb = 25
Vcc = 2V
80
60
40
20
0
80
Ω
+400pF
ZL = 32
Ω
Gain
Gain
°C
Tamb = 25°C
60
40
20
0
Phase
Phase
60
60
40
40
20
20
-20
-40
-20
-40
0
0
-20
10000
-20
10000
0.1
1
10
100
1000
0.1
1
10
100
1000
Frequency (kHz)
Frequency (kHz)
Fig. 9: Open Loop Gain and Phase vs
Frequency
Fig. 10: Open Loop Gain and Phase vs
Frequency
180
160
140
120
100
80
180
160
140
120
100
80
Vcc = 5V
RL = 600
Tamb = 25
Vcc = 2V
RL = 600
Tamb = 25°C
80
60
40
20
0
80
60
40
20
0
Gain
Gain
Ω
Ω
°C
Phase
Phase
60
60
40
40
20
20
-20
-40
-20
-40
0
0
-20
-20
0.1
1
10
100
1000
10000
0.1
1
10
100
1000
10000
Frequency (kHz)
Frequency (kHz)
Fig. 11: Current Consumption vs Power Supply
Voltage
Fig. 12: Current Consumption vs Standby
Voltage
2.0
2.0
No load
Ta=85°C
1.5
1.5
Ta=85°C
Ta=25°C
Ta=-40°C
Ta=25°C
1.0
0.5
0.0
1.0
Ta=-40°C
0.5
TS486
Vcc = 5V
No load
0.0
0
1
2
3
4
5
0
1
2
3
4
5
Power Supply Voltage (V)
Standby Voltage (V)
10/31
TS486-TS487
Fig. 13: Current Consumption vs Standby
Voltage
Fig. 14: Current Consumption vs Standby
Voltage
2.0
1.5
2.0
1.5
1.0
0.5
0.0
Ta=85°C
Ta=85
°
C
Ta=25°C
Ta=-40°C
Ta=25°C
1.0
0.5
0.0
Ta=-40°C
TS486
Vcc = 3.3V
No load
TS486
Vcc = 2V
No load
0
1
2
3
0
1
2
Standby Voltage (V)
Standby Voltage (V)
Fig. 15: Current Consumption vs Standby
Voltage
Fig. 16: Current Consumption vs Standby
Voltage
2.5
2.0
Ta=85°C
Ta=25°C
Ta=25°C
2.0
1.5
1.0
0.5
0.0
1.5
1.0
0.5
0.0
Ta=85°C
Ta=-40°C
Ta=-40°C
TS487
Vcc = 5V
No load
TS487
Vcc = 3.3V
No load
0
1
2
3
4
5
0
1
2
3
Standby Voltage (V)
Standby Voltage (V)
Fig. 17: Current Consumption vs Standby
Voltage
Fig. 18: Output Power vs Power Supply
Voltage
2.0
200
Ta=85°C
RL = 16
Ω
175
150
125
100
75
F = 1kHz
BW < 125kHz
Tamb = 25°C
THD+N=1%
1.5
Ta=25°C
THD+N=10%
1.0
Ta=-40°C
0.5
50
TS487
THD+N=0.1%
Vcc = 2V
25
No load
0.0
0
2.0
0
1
2
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
Standby Voltage (V)
11/31
TS486-TS487
Fig. 19: Output Power vs Power Supply
Voltage
Fig. 20: Output Power vs Load Resistor
200
RL = 32
F = 1kHz
BW < 125kHz
Tamb = 25°C
Ω
Vcc = 5V
180
F = 1kHz
BW < 125kHz
Tamb = 25°C
100
75
50
25
0
THD+N=1%
THD+N=1%
160
140
120
100
80
THD+N=10%
THD+N=10%
60
THD+N=0.1%
40
THD+N=0.1%
20
0
2.0
2.5
3.0
3.5
Vcc (V)
4.0
4.5
5.0
5.5
8
16
24
32
40
48
)
56
64
Load Resistance (
Fig. 21: Output Power vs Load Resistor
Fig. 22: Output Power vs Load Resistor
50
70
60
50
40
30
20
10
0
Vcc = 3.3V
F = 1kHz
BW < 125kHz
Vcc = 2.5V
F = 1kHz
45
THD+N=1%
40
35
30
25
20
15
10
5
BW < 125kHz
Tamb = 25
Tamb = 25°C
°
C
THD+N=1%
THD+N=10%
THD+N=10%
THD+N=0.1%
THD+N=0.1%
0
8
16
24
32
40
48
56
64
8
16
24
32
40
48
56
64
Load Resistance (
)
Load Resistance (
)
Fig. 23: Output Power vs Load Resistor
Fig. 24: Power Dissipation vs Output Power
25
Vcc=5V
F=1kHz
THD+N<1%
Vcc = 2V
F = 1kHz
BW < 125kHz
80
20
15
10
5
Tamb = 25°C
THD+N=1%
60
40
20
0
RL=16
Ω
THD+N=10%
RL=32
Ω
THD+N=0.1%
0
0
20
40
60
80
100
8
16
24
32
40
48
56
64
Output Power (mW)
Load Resistance (
)
12/31
TS486-TS487
Fig. 25: Power Dissipation vs Output Power
Fig. 26: Power Dissipation vs Output Power
40
Vcc=2.5V
F=1kHz
THD+N<1%
Vcc=3.3V
F=1kHz
THD+N<1%
30
20
10
0
RL=16Ω
RL=16
Ω
20
10
0
RL=32
Ω
RL=32Ω
0
5
10
15
20
0
10
20
Output Power (mW)
30
40
Output Power (mW)
Fig. 27: Power Dissipation vs Output Power
Fig. 28: Power Derating vs Ambiant
Temperature
15
Vcc=2V
F=1kHz
THD+N<1%
10
RL=16
Ω
5
0
RL=32
Ω
0
2
4
6
8
10
12
Output Power (mW)
Fig. 29: Output Voltage Swing vs Power Supply
Voltage
Fig. 30: Low Frequency Cut Off vs Input
Capacitor for fixed gain versions.
5.0
Tamb=25°C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Ω
Ω
RL=32
Ω
RL=16
Ω
Ω
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
13/31
TS486-TS487
Fig. 31: THD + N vs Output Power
Fig. 32: THD + N vs Output Power
10
10
RL = 16
Ω
RL = 32
Ω
F = 20Hz
Av = -1
F = 20Hz
Av = -1
Cb = 1
BW < 22kHz
Tamb = 25
µ
F
1
0.1
Cb = 1
BW < 22kHz
Tamb = 25
µF
1
0.1
°
C
°C
Vcc=2V
Vcc=2V
Vcc=2.5V
Vcc=2.5V
0.01
0.01
Vcc=3.3V
10
Vcc=5V
Vcc=3.3V
10
Vcc=5V
1
100
1
100
Output Power (mW)
Output Power (mW)
Fig. 33: THD + N vs Output Power
Fig. 34: THD + N vs Output Power
10
10
RL = 600Ω, F = 20Hz
RL = 16
F = 1kHz
Av = -1
Cb = 1µF
BW < 125kHz
Tamb = 25
Ω
Av = -1, Cb = 1
µF
Vcc=2V
BW < 22kHz
Tamb = 25°C
1
0.1
Vcc=2.5V
Vcc=3.3V
1
0.1
°
C
Vcc=2V
Vcc=5V
Vcc=2.5V
0.01
0.01
Vcc=3.3V
10
Vcc=5V
1E-3
0.01
0.1
Output Voltage (Vrms)
1
1
100
Output Power (mW)
Fig. 35: THD + N vs Output Power
Fig. 36: THD + N vs Output Power
10
10
RL = 32
Ω
F = 1kHz
Av = -1
Vcc=2V
1
1
0.1
Cb = 1
BW < 125kHz
Tamb = 25
µF
Vcc=2.5V
°C
Vcc=3.3V
0.1
Vcc=2V
Vcc=5V
0.01
0.01
1E-3
RL = 600
Av = -1, Cb = 1
BW < 125kHz, Tamb = 25
Ω, F = 1kHz
µF
Vcc=2.5V
°C
Vcc=3.3V
10
Vcc=5V
1E-3
0.01
0.1
Output Voltage (Vrms)
1
1
100
Output Power (mW)
14/31
TS486-TS487
Fig. 37: THD + N vs Output Power
Fig. 38: THD + N vs Output Power
10
10
RL = 16
Ω
RL = 32Ω
F = 20kHz
Av = -1
F = 20kHz
Av = -1
Cb = 1µF
Cb = 1µF
BW < 125kHz
Tamb = 25°C
BW < 125kHz
1
Tamb = 25°C
1
Vcc=2V
Vcc=2V
Vcc=2.5V
Vcc=2.5V
0.1
0.1
Vcc=5V
Vcc=3.3V
10
Vcc=5V
Vcc=3.3V
10
1
100
1
100
Output Power (mW)
Output Power (mW)
Fig. 39: THD + N vs Output Power
Fig. 40: THD + N vs Frequency
10
RL=16
Av=-1
Cb = 1
Ω
Vcc=2V
µF
Bw < 125kHz
Tamb = 25
1
Vcc=2.5V
°
C
Vcc=2V, Po=7.5mW
0.1
0.1
Vcc=5V, Po=85mW
0.01
1E-3
Vcc=3.3V
Vcc=5V
RL = 600
Av = -1, Cb = 1
BW < 125kHz, Tamb = 25
Ω, F = 20kHz
µF
0.01
°C
20
100
1000
10000 20k
0.01
0.1
Output Voltage (Vrms)
1
Frequency (Hz)
Fig. 41: THD + N vs Frequency
Fig. 42: THD + N vs Frequency
RL=32
Av=-1
Cb = 1
Ω
RL=600Ω
Av=-1
Cb = 1µF
µF
0.1
0.01
1E-3
Bw < 125kHz
Tamb=25
Bw < 125kHz
Tamb = 25°C
°C
0.1
Vcc=5V, Vo=1.3Vrms
Vcc=2V, Vo=0.5Vrms
Vcc=2V, Po=6mW
Vcc=5V, Po=55mW
0.01
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
15/31
TS486-TS487
Fig. 43: Crosstalk vs Frequency
Fig. 44: Crosstalk vs Frequency
ChB to ChA
80
80
ChA to ChB
60
60
40
20
0
ChA to ChB
ChB to ChA
RL=16
Ω
RL=16
Vcc=5V
Ω
40
20
0
Vcc=2V
Pout=7.5mW
Av=-1
Pout=85mW
Av=-1
Cb = 1
Bw < 125kHz
Tamb=25
Cb = 1
Bw < 125kHz
Tamb=25
µF
µF
°C
°C
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Fig. 45: Crosstalk vs Frequency
Fig. 46: Crosstalk vs Frequency
80
80
ChA to ChB
ChA to ChB
60
ChB to ChA
60
40
20
0
ChB to ChA
40
RL=32
Ω
RL=32
Vcc=5V
Ω
Vcc=2V
Pout=6mW
Av=-1
Pout=55mW
Av=-1
Cb = 1
Bw < 125kHz
Tamb=25
Cb = 1
Bw < 125kHz
Tamb=25
µF
20
0
µF
°C
°C
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
Fig. 47: Crosstalk vs Frequency
Fig. 48: Crosstalk vs Frequency
80
80
Cb = 1µF
60
40
20
0
60
40
20
0
Cb = 1µF
Cb = 4.7
µF
Cb = 4.7µF
RL=16
Vcc=5V
Pout=85mW
Av=-1
ChB to ChA
Bw < 125kHz
Ω
RL=32
Vcc=5V
Pout=55mW
Av=-1
ChB to ChA
Bw < 125kHz
Ω
Tamb=25
°C
Tamb=25
°C
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
16/31
TS486-TS487
Fig. 49: Signal to Noise Ratio vs Power Supply
VoltagewithUnweightedFilter(20Hzto20kHz)
Fig. 50: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Av = -1
Cb = 1
THD+N < 0.4%
Tamb = 25
Av = -1
Cb = 1
THD+N < 0.4%
Tamb = 25
104
102
100
98
104
102
100
98
RL=600Ω
µF
µF
RL=600
Ω
°C
°C
RL=32
Ω
96
96
RL=32
Ω
94
94
RL=16
Ω
92
92
RL=16
Ω
90
2.0
90
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
Power Supply Voltage (V)
Fig. 51: PSRR vs Power Supply Voltage
Fig. 52: PSRR vs Bypass Capacitor
0
0
Vripple = 200mVpp
Av = -1
Vripple = 200mVpp
Av = -1
-10
-10
Input = grounded
Cb = 1µF
Input = grounded
Vcc = 5V
-20
-20
RL >= 16Ω
Tamb = 25°C
RL >= 16Ω
Tamb = 25°C
-30
-30
Vcc = 2V
-40
-50
-60
-70
-80
-40
Cb = 1µF
-50
-60
-70
-80
Vcc = 5V, 3.3V & 2.5V
Cb = 2.2µF
Cb = 4.7µF
100
1000
10000
Frequency (Hz)
100000
100
1000
10000
100000
Frequency (Hz)
Fig. 53: PSRR vs Input Capacitor
Fig. 54: PSRR vs Output Capacitor
0
0
Vripple = 200mVpp
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
Av = -1, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Cout = 470µF
Cin = 1µF, 220nF
Tamb = 25°C
Tamb = 25°C
Cout = 220µF
Cin = 100nF
1000
100
10000
Frequency (Hz)
100000
100
1000
10000
Frequency (Hz)
100000
17/31
TS486-TS487
Fig. 55: PSRR vs Output Capacitor
Fig. 56: PSRR vs Power Supply Voltage
0
0
Vripple = 200mVpp
Av = -1
Input = floating
Cb = 1µF
RL >= 16Ω
Tamb = 25°C
Vripple = 200mVpp
-10
-10
Av = -1, Vcc = 5V
Input = grounded
-20
-20
Cout = 470µF
Cb = 1µF, RL = 32Ω
RL >= 16Ω
-30
-30
-40
-50
-60
-70
-80
Tamb = 25°C
Vcc = 2V
-40
-50
-60
-70
-80
Cout = 100µF
Vcc = 5V, 3.3V & 2.5V
100
1000
10000
100000
100
1000
10000
Frequency (Hz)
100000
Frequency (Hz)
18/31
TS486-TS487
Fig. 57: THD + N vs Output Power
Fig. 58: THD + N vs Output Power
10
10
1
RL = 16
F = 20Hz
Av = -2
Cb = 1µF
BW < 22kHz
Tamb = 25
Ω
RL = 32
Ω
F = 20Hz
Av = -2
Cb = 1
BW < 22kHz
Tamb = 25
µF
1
0.1
°
C
°C
Vcc=2V
Vcc=2V
0.1
0.01
Vcc=2.5V
Vcc=2.5V
0.01
Vcc=3.3V
10
Vcc=5V
Vcc=5V
Vcc=3.3V
10
1
100
1
100
Output Power (mW)
Output Power (mW)
Fig. 59: THD + N vs Output Power
Fig. 60: THD + N vs Output Power
10
10
RL = 600Ω, F = 20Hz
RL = 16
Ω
Av = -2, Cb = 1
BW < 22kHz
µF
F = 1kHz
Av = -2
Vcc=2V
1
0.1
Tamb = 25°C
Cb = 1µF
BW < 125kHz
Tamb = 25
1
0.1
Vcc=2.5V
Vcc=3.3V
°
C
Vcc=2V
Vcc=5V
Vcc=2.5V
0.01
0.01
Vcc=3.3V
10
Vcc=5V
1E-3
0.01
1
100
0.1
Output Voltage (Vrms)
1
Output Power (mW)
Fig. 61: THD + N vs Output Power
Fig. 62: THD + N vs Output Power
10
10
RL = 32
Ω
F = 1kHz
Av = -2
Cb = 1µF
BW < 125kHz
Tamb = 25
Vcc=2V
1
1
0.1
Vcc=2.5V
°
C
Vcc=3.3V
Vcc=5V
0.1
Vcc=2V
Vcc=2.5V
0.01
RL = 600
Av = -2, Cb = 1
BW < 125kHz, Tamb = 25
Ω, F = 1kHz
µF
0.01
Vcc=3.3V
10
Vcc=5V
°C
1E-3
1
100
0.01 0.1
1
Output Voltage (Vrms)
Output Power (mW)
19/31
TS486-TS487
Fig. 63: THD + N vs Output Power
Fig. 64: THD + N vs Output Power
10
10
RL = 32Ω
F = 20kHz
Av = -2
RL = 16
F = 20kHz
Av = -2
Ω
Cb = 1µF
BW < 125kHz
Tamb = 25°C
Cb = 1
BW < 125kHz
Tamb = 25
µF
1
°
C
1
Vcc=2V
Vcc=2V
Vcc=2.5V
0.1
0.1
Vcc=3.3V
10
Vcc=2.5V
Vcc=3.3V
10
Vcc=5V
Vcc=5V
1
100
1
100
Output Power (mW)
Output Power (mW)
Fig. 65: THD + N vs Output Power
Fig. 66: THD + N vs Frequency
10
RL=16
Av=-2
Cb = 1
Ω
Vcc=2V
µF
Bw < 125kHz
Tamb = 25
1
Vcc=2.5V
°
C
Vcc=2V, Po=7.5mW
0.1
0.1
0.01
1E-3
Vcc=3.3V
Vcc=5V
RL = 600
Av = -2, Cb = 1
BW < 125kHz, Tamb = 25
Ω, F = 20kHz
Vcc=5V, Po=85mW
100
µF
0.01
°C
20
1000
10000 20k
0.01
0.1
1
Frequency (Hz)
Output Voltage (Vrms)
Fig. 67: THD + N vs Frequency
Fig. 68: THD + N vs Frequency
RL=32
Av=-2
Cb = 1
Bw < 125kHz
Tamb=25
Ω
RL=600
Av=-2
Ω
µF
Cb = 1µF
0.1
0.01
1E-3
Bw < 125kHz
Tamb = 25
°C
°
C
0.1
Vcc=5V, Vo=1.3Vrms
Vcc=2V, Po=6mW
Vcc=2V, Vo=0.5Vrms
0.01
Vcc=5V, Po=55mW
100
20
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
20/31
TS486-TS487
Fig. 69: Crosstalk vs Frequency
Fig. 70: Crosstalk vs Frequency
ChB to ChA
80
ChB to ChA
80
60
60
40
20
0
ChA to ChB
ChA to ChB
RL=16
Ω
RL=16
Vcc=5V
Ω
40
20
0
Vcc=2V
Pout=7.5mW
Av=-2
Pout=85mW
Av=-2
Cb = 1
Bw < 125kHz
Tamb=25
Cb = 1
Bw < 125kHz
Tamb=25
µF
µF
°C
°C
20
100
1000
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
Frequency (Hz)
Fig. 71: Crosstalk vs Frequency
Fig. 72: Crosstalk vs Frequency
80
80
60
ChA to ChB
ChA to ChB
ChB to ChA
60
40
20
0
ChB to ChA
40
RL=32
Ω
RL=32Ω
Vcc=2V
Vcc=5V
Pout=55mW
Av=-2
Pout=6mW
Av=-2
Cb = 1µF
Bw < 125kHz
Tamb=25°C
20
0
Cb = 1
Bw < 125kHz
Tamb=25
µF
°C
20
100
1000
Frequency (Hz)
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Fig. 73: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 74: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
100
104
RL=600
Ω
Av = -2
Cb = 1
THD+N < 0.4%
Av = -2
Cb = 1µF
THD+N < 0.4%
Tamb = 25
102
98
96
94
92
90
88
86
84
82
µF
RL=600
Ω
100
98
96
94
92
90
88
86
84
82
Tamb = 25
°C
°
C
RL=32
Ω
RL=32
Ω
RL=16
Ω
RL=16
Ω
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
Power Supply Voltage (V)
21/31
TS486-TS487
Fig. 75: PSRR vs Power Supply Voltage
Fig. 76: PSRR vs Bypass Capacitor
0
0
Vripple = 200mVpp
Av = -2
Vripple = 200mVpp
Av = -2
-10
-10
Input = grounded
Input = grounded
-20
-30
-40
-50
-60
-70
-20
-30
-40
-50
-60
-70
Cb = 1µF
RL >= 16Ω
Tamb = 25°C
Vcc = 5V
RL >= 16Ω
Tamb = 25°C
Vcc = 2V
Cb = 1µF
Vcc = 5V, 3.3V & 2.5V
Cb = 4.7µF
100
Cb = 2.2µF
100
1000
10000
Frequency (Hz)
100000
100000
100000
1000
10000
100000
Frequency (Hz)
Fig. 77: PSRR vs Input Capacitor
Fig. 78: PSRR vs Output Capacitor
0
0
Vripple = 200mVpp
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
-10
-20
-30
-40
-50
-60
-70
-10
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
-20
Cout = 470µF
Cin = 1µF, 220nF
-30
-40
-50
-60
-70
Tamb = 25°C
Tamb = 25°C
Cout = 220µF
Cin = 100nF
1000
100
10000
Frequency (Hz)
100
1000
10000
100000
Frequency (Hz)
Fig. 79: PSRR vs Output Capacitor
Fig. 80: THD + N vs Output Power
10
0
RL = 16
Ω
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 32Ω
RL >= 16Ω
-10
F = 20Hz
Av = -4
Cb = 1µF
-20
-30
-40
-50
-60
-70
Cout = 470µF
1
0.1
BW < 22kHz
Tamb = 25
°C
Vcc=2V
Tamb = 25°C
Vcc=2.5V
Cout = 100µF
Vcc=3.3V
10
Vcc=5V
0.01
1
100
100
1000
10000
Frequency (Hz)
Output Power (mW)
22/31
TS486-TS487
Fig. 81: THD + N vs Output Power
Fig. 82: THD + N vs Output Power
10
1
10
RL = 600Ω, F = 20Hz
RL = 32
F = 20Hz
Av = -4
Cb = 1µF
BW < 22kHz
Tamb = 25
Ω
Av = -4, Cb = 1
µF
Vcc=2V
BW < 22kHz
Tamb = 25°C
Vcc=2.5V
Vcc=3.3V
1
0.1
°
C
0.1
Vcc=2V
Vcc=5V
Vcc=2.5V
0.01
Vcc=5V
Vcc=3.3V
10
1E-3
0.01
0.01
0.1
Output Voltage (Vrms)
1
1
100
Output Power (mW)
Fig. 83: THD + N vs Output Power
Fig. 84: THD + N vs Output Power
10
10
RL = 16
Ω
RL = 32
Ω
F = 1kHz
Av = -4
F = 1kHz
Av = -4
Cb = 1µF
BW < 125kHz
Tamb = 25
Cb = 1µF
BW < 125kHz
Tamb = 25
1
0.1
1
0.1
°
C
°
C
Vcc=2V
Vcc=2V
Vcc=2.5V
Vcc=2.5V
Vcc=3.3V
10
Vcc=5V
Vcc=3.3V
10
Vcc=5V
0.01
0.01
1
100
1
100
Output Power (mW)
Output Power (mW)
Fig. 85: THD + N vs Output Power
Fig. 86: THD + N vs Output Power
10
10
RL = 16
F = 20kHz
Av = -4
Ω
Vcc=2V
1
Vcc=2.5V
Cb = 1
BW < 125kHz
Tamb = 25
µF
°
C
Vcc=3.3V
Vcc=2V
0.1
1
Vcc=2.5V
0.01
RL = 600
Av = -4, Cb = 1
Ω, F = 1kHz
Vcc=5V
µF
BW < 125kHz, Tamb = 25
°C
Vcc=3.3V
10
Vcc=5V
1E-3
0.01
0.1
0.1
1
1
100
Output Voltage (Vrms)
Output Power (mW)
23/31
TS486-TS487
Fig. 87: THD + N vs Output Power
Fig. 88: THD + N vs Output Power
10
10
RL = 32
Ω
Vcc=2V
F = 20kHz
Av = -4
1
Cb = 1
BW < 125kHz
Tamb = 25
µF
Vcc=2.5V
°C
0.1
1
Vcc=2V
Vcc=2.5V
0.01
1E-3
Vcc=3.3V
Vcc=5V
RL = 600
Av = -4, Cb = 1
BW < 125kHz, Tamb = 25
Ω, F = 20kHz
µF
°C
Vcc=5V
Vcc=3.3V
10
0.1
0.01
0.1
1
1
100
Output Voltage (Vrms)
Output Power (mW)
Fig. 89: THD + N vs Frequency
Fig. 90: THD + N vs Frequency
RL=32Ω
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
RL=16
Av=-4
Cb = 1
Bw < 125kHz
Tamb = 25
Ω
µF
°C
0.1
Vcc=2V, Po=7.5mW
Vcc=2V, Po=6mW
0.1
Vcc=5V, Po=85mW
Vcc=5V, Po=55mW
0.01
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
Fig. 91: THD + N vs Frequency
Fig. 92: Crosstalk vs Frequency
80
RL=600
Ω
ChB to ChA
Av=-4
Cb = 1
Bw < 125kHz
Tamb = 25
µ
F
0.1
0.01
1E-3
60
°
C
Vcc=2V, Vo=0.5Vrms
Vcc=5V, Vo=1.3Vrms
ChA to ChB
40
RL=16Ω
Vcc=5V
Pout=85mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
20
0
20
100
1000
10000 20k
20
100
1000
10000 20k
Frequency (Hz)
Frequency (Hz)
24/31
TS486-TS487
Fig. 93: Crosstalk vs Frequency
Fig. 94: Crosstalk vs Frequency
80
ChB to ChA
80
60
ChA to ChB
ChB to ChA
60
40
20
0
ChA to ChB
40
20
0
RL=16Ω
Vcc=2V
RL=32
Ω
Vcc=5V
Pout=55mW
Av=-4
Pout=7.5mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
Cb = 1
Bw < 125kHz
Tamb=25
µF
°C
20
100
1000
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
Frequency (Hz)
Fig. 95: Crosstalk vs Frequency
Fig. 96: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
100
80
Av = -4
Cb = 1µF
98
RL=600
Ω
THD+N < 0.4%
96
94
92
90
88
86
84
82
80
60
Tamb = 25°C
ChA to ChB
ChB to ChA
40
RL=32Ω
Vcc=2V
Pout=6mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
RL=32
Ω
20
0
RL=16
Ω
2.0
2.5
3.0
3.5
4.0
4.5
5.0
20
100
1000
10000 20k
Frequency (Hz)
Power Supply Voltage (V)
Fig. 97: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Fig. 98: PSRR vs Power Supply Voltage
100
0
Av = -4
Cb = 1µF
98
Vripple = 200mVpp
RL=600
Ω
Av = -4
Input = grounded
Cb = 1µF
RL >= 16Ω
Tamb = 25°C
-10
-20
-30
-40
-50
-60
THD+N < 0.4%
Tamb = 25°C
96
94
92
90
88
86
84
82
80
Vcc = 2V
RL=32
Ω
RL=16
Ω
Vcc = 5V, 3.3V & 2.5V
2.0
2.5
3.0
3.5
4.0
4.5
5.0
100
1000
10000
Frequency (Hz)
100000
Power Supply Voltage (V)
25/31
TS486-TS487
Fig. 99: PSRR vs Input Capacitor
Fig. 100: PSRR vs Bypass Capacitor
0
0
Vripple = 200mVpp
Vripple = 200mVpp
-10
-20
-30
-40
-50
-60
Av = -4
Input = grounded
Vcc = 5V
RL >= 16Ω
Tamb = 25°C
-10
-20
-30
-40
-50
-60
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Cin = 1µF, 220nF
Tamb = 25°C
Cb = 1µF
Cin = 100nF
1000
Cb = 4.7µF
Cb = 2.2µF
1000
100
10000
Frequency (Hz)
100000
100
10000
Frequency (Hz)
100000
Fig. 101: PSRR vs Output Capacitor
Fig. 102: PSRR vs Output Capacitor
0
0
Vripple = 200mVpp
Vripple = 200mVpp
-10
-20
-30
-40
-50
-60
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 32Ω
RL >= 16Ω
-10
-20
-30
-40
-50
-60
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
Cout = 470µF
Cout = 470µF
Tamb = 25°C
Tamb = 25°C
Cout = 220µF
1000
Cout = 100µF
1000
100
10000
Frequency (Hz)
100000
100
10000
Frequency (Hz)
100000
26/31
TS486-TS487
APPLICATION NOTE:
TS486/487 GENERAL DESCRIPTION
Gain = 20 Log(R
/R )
FEED IN
dB
TS486/487 is a family of dual audio amplifiers able
to drive 16Ω or 32Ω headsets. Working in the 2V to
5.5V supply voltage range, they deliver 100mW at
5V and 12mW at 2V in a 16Ω load. An internal
output current limitation, offers protection against
short-circuits at the output over a limited time
period.
Fixed gain versions TS486-n and TS487-n
including R and R
are proposed to reduce
FEED
IN
external parts.
LOW FREQUENCY ROLL-OFF WITH INPUT
CAPACITORS
The low roll-off frequency of the headphone
amplifiers depends on the input capacitors C
IN1
.
Fixed gain versions of the TS486 and TS487
including the feedback resistor and the input
resistors are also proposed to reduce the number
of external parts.
and C
and the input resistors R
and R
IN2
IN1
IN2
The C capacitor in series with the input resistor
IN
R
of the amplifier is equivalent to a first order
IN
high pass filter.
The TS486 and TS487 exhibit a low quiescent
current of typically 1.8mA, allowing usage in
portable applications.
Assuming that F
is the lowest frequency to be
min
amplified (with a 3dB attenuation), the minimum
value of C is:
IN
The standby mode is selected using the
SHUTDOWN input. For TS486 (respectively
TS487), the device is in sleep mode when PIN 5 is
C
> 1 / (2*π*F *R
)
IN
min IN
connected at GND (resp. V ).
The following curve gives directly the low
frequency roll-off versus the input capacitor C
CC
IN
GAIN SETTING
The gain of each inverter amplifier of the TS486
and TS487 is set by the resistors R and R
.
FEED
IN
Gain
= -(R
/R )
FEED IN
LINEAR
27/31
TS486-TS487
and for various values of the input resistor R
.
frequency versus the output capacitor C
in µF
OUT
IN
and for the two typical 16Ω and 32Ω impedances:
1000
1000
Rin = 1k
Ω
Rin = 10k
Ω
100
10
1
100
RL = 16
Ω
RL = 32
Ω
Rin = 100k
Ω
10
1
Rin = 20k
Ω and
fixed gain versions
0.01
0.1
1
10
Cin (µF)
10
100
1000
10000
COUT ( F)
The input resistance of the fixed gain version is
typically 20kΩ.
DECOUPLING CAPACITOR C
B
The following curve shows the limits of the roll off
frequency depending on the min. and max. values
of Rin:
The internal bias voltage at Vcc/2 is decoupled
with the external capacitor C .
B
The TS486 and TS487 have a specified Power
Supply Rejection Ratio parameter with C = 1µF.
B
A higher value of C improves the PSRR, for
B
example, a 4.7µF improves the PSRR by 15dB at
200Hz (please, refer to fig. 76 "PSRR vs Bypass
Capacitor").
Ω
Ω
POP PRECAUTIONS
Generally headphones are connected using a
connector as a jack. To prevent a pop in the
headphones when plugged in the jack, a resistor
should be connected in parallel with each
headphone output. This allows the capacitors
Cout to be charged even when no headphone is
plugged.
Ω
LOW FREQUENCY ROLL OFF WITH OUTPUT
CAPACITORS
A resistor of 1 kΩ is high enough to be a negligible
load, and low enough to charge the capacitors
Cout in less than one second.
The DC voltage on the outputs of the TS486/487
is blocked by the output capacitors C
and
OUT1
C
. Each output capacitor C
in series with
OUT2
OUT
the resistance of the load R is equivalent to a first
L
order high pass filter.
Assuming that F
is the lowest frequency to be
min
amplified (with a 3dB attenuation), the minimum
value of C is:
OUT
C
> 1 / (2*π*F *R )
min L
OUT
The following curve gives directly the low roll-off
28/31
TS486-TS487
PACKAGE MECHANICAL DATA
SO-8 MECHANICAL DATA
mm.
TYP
inch
TYP.
DIM.
MIN.
MAX.
MIN.
MAX.
A
A1
A2
B
1.35
1.75
0.053
0.069
0.10
1.10
0.33
0.19
4.80
3.80
0.25
1.65
0.51
0.25
5.00
4.00
0.04
0.010
0.065
0.020
0.010
0.197
0.157
0.043
0.013
0.007
0.189
0.150
C
D
E
e
1.27
0.050
H
5.80
0.25
0.40
6.20
0.50
1.27
0.228
0.010
0.016
0.244
0.020
0.050
h
L
k
˚ (max.)
8
ddd
0.1
0.04
0016023/C
29/31
TS486-TS487
PACKAGE MECHANICAL DATA
30/31
TS486-TS487
PACKAGE MECHANICAL DATA
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
© 2003 STMicroelectronics - All Rights Reserved
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31/31
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