ETC TS486IST

TS486
TS487
100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY
MODE
■ OPERATING FROM Vcc=2V to 5.5V
■ STANDBY MODE ACTIVE LOW (TS486) or
HIGH (TS487)
■ 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
■ Unity-Gain Stable
■ SHORT CIRCUIT LIMITATION
■ Available in SO8, MiniSO8 & QFN 3x3mm
PIN CONNECTIONS (top view)
TS486IDT: SO8, TS486IST, TS486-1IST,
TS486-2IST, TS486-4IST: MiniSO8
OU T (1 )
1
8
V CC
VI N (1)
2
7
OU T (2 )
BYPASS
3
6
4
5
GN D
VI N (2)
SH U TD OW N
DESCRIPTION
The TS486/7 is a dual audio power amplifier capable of driving, in single-ended mode, either a 16 or
a 32Ω stereo headset.
Capable of descending to low voltages, it delivers
up to 90mW per channel (into 16Ω loads) of continuous 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 version.
APPLICATIONS
■ Headphone Amplifier
■ Mobile phone, PDA, computer motherboard
■ High end TV, portable audio player
TS486-IQT,
TS486-1IQT, TS486-2IQT, TS486-4IQT: QFN8
O UT (1 )
Part
Number
TS486
TS487
TS486
TS486-1
TS486-2
TS486-4
TS487
TS487-1
TS487-2
TS487-4
BYPASS
Package
Temperature
Range: I
D
S
-40, +85°C
8
Vcc
2
7
OUT (2)
BYPASS
3
6
VIN (2)
GND
4
5
SHUTDOWN
1
8
V CC
2
7
O UT (2 )
3
6
4
5
V I N (2 )
S HU TDO WN
Marking
Q
•
•
•
tba
tba
tba
•
tba
tba
tba
G ND
Gain
1
VIN (1)
TS487IDT: SO8, TS487IST, TS487-1IST,
TS487-2IST, TS487-4IST: MiniSO8
VI N (1 )
ORDER CODE
OUT (1)
tba
tba
tba
tba
tba
tba
tba
tba
external TS486I
external TS487I
external K86A
x1/0dB
K86B
x2/6dB
K86C
x4/12dB K86D
external K87A
x1/0dB
K87B
x2/6dB
K87C
x4/12dB K87D
TS487-IQT,
TS487-1IQT, TS487-2IQT, TS487-4IQT: QFN8
OUT (1)
1
8
Vcc
VIN (1)
2
7
OUT ( 2)
BYPASS
3
6
VIN (2)
GND
4
5
SHUTDOWN
MiniSO & QFN only available in Tape & Reel with T suffix,
SO is available in Tube (D) and in Tape & Reel (DT)
November 2002
1/31
TS486-TS487
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Vi
Tstg
Tj
R thja
Pd
Parameter
Supply voltage 1)
Value
Unit
6
V
-0.3v to V CC +0.3v
V
-65 to +150
°C
Maximum Junction Temperature
150
°C
Thermal Resistance Junction to Ambient
SO8
MiniSO8
QFN8
175
215
70
Power Dissipation 2)
SO8
MiniSO8
QFN8
0.71
0.58
1.79
Input Voltage
Storage Temperature
Human Body Model (pin to pin): TS486, TS4873)
ESD
Machine Model - 220pF - 240pF (pin to pin)
Latch-up Latch-up Immunity (All pins)
Lead Temperature (soldering, 10sec)
ESD
Output Short-Circuit to Vcc or GND
°C/W
W
1.5
kV
100
200
250
V
mA
°C
continous 4)
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 (VDD x 300mA). Exposure of the IC to a short circuit for an extended time period is
dramatically reducing product life expectancy.
OPERATING CONDITIONS
Symbol
VCC
Supply Voltage
RL
Load Resistor
Toper
CL
VSTB
1.
Parameter
Operating Free Air Temperature Range
Load Capacitor
R L = 16 to 100Ω
R L > 100Ω
Standby Voltage Input
TS486 ACTIVE / TS487 in STANDBY
TS486 in STANDBY / TS487 ACTIVE
Thermal Resistance Junction to Ambient
SO8
RTHJA
miniSO8
QFN82)
The minimum current consumption (ISTANDBY) is guaranteed at GND (TS486) or V CC (TS487)
2.
2/31
When mounted on a 4-layer PCB.
Value
Unit
2 to 5.5
V
≥ 16
Ω
-40 to + 85
°C
400
100
pF
1.5 ≤ VSTB ≤ VCC
GND ≤ V STB ≤ 0.4 1)
150
190
41
for the whole temperature range.
V
°C/W
TS486-TS487
FIXED GAIN VERSION SPECIFIC ELECTRICAL CHARACTERISTICS
VCC from +5V to +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
RIN 1,2
G
1.
Parameter
Min.
Typ.
Input Resistance 1)
20
Gain value for Gain TS486/TS487-1
0dB
Gain value for Gain TS486/TS487-2
6dB
Gain value for Gain TS486/TS487-4
12dB
Max.
Unit
kΩ
dB
See figure 30 to establish the value of Cin vs. -3dB cut off frequency.
APPLICATION COMPONENTS INFORMATION
Components
Functiona l Description
RIN1,2
Inverting input resistor which sets the closed loop gain in conjunction with RFEED. This resistor also
forms a high pass filter with CIN (fc = 1 / (2 x Pi x R IN x CIN)) . Not needed in fixed gain versions.
CIN1,2
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminal.
RFEED1,2
Feedback resistor which sets the closed loop gain in conjunction with RIN.
AV= Closed Loop Gain= -RFEED/RIN. Not needed in fixed gain versions.
CS
Supply Bypass capacitor which provides power supply filtering.
CB
Bypass capacitor which provides half supply filtering.
C OUT1,2
Output coupling capacitor which blocks the DC voltage at the load input terminal.
This capacitor also forms a high pass filter with RL (fc = 1 / (2 x Pi x RL x COUT )).
TYPICAL APPLICATION SCHEMATICS
Vcc
Stdb y level
threshold=0.9V
Stdby ctrl
Cs
1µF
20k
20k
2
+
5
Rin1
330 nF
Cb
Stdby
3
1µF
Rin2
+
ZL=32Ohms
1k
Cout1
Cout2
+
6
7
+
ZL=32Ohms
220µF
GND
4
20k
Cin2
1
TS486=Stdby
TS487=Stdby
+
Left In
220µF
+
BIAS
+
330 nF
8
VCC
-
+
Cin1
+
Right In
+
Rfeed1
1k
20k
Rfeed2
Vcc
Stdby level
threshold=0.9V
+
Stdby ctrl
Fixed Gain Version
Cin1
2
5
Cb
3
+
Cin2
1µF
330 nF
1
+
ZL=32Ohms
+
BIAS
Cout1
TS486=Stdby
TS487=Stdby
+
6
+
Left In
Stdby
220µF
GND
4
7
+
+
330 nF
Cs
1µF
8
VCC
-
+
Right In
1k
Cout2
220µF
+
ZL=32Oh ms
1k
3/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
ICC
ISTANDBY
Parameter
Supply Current
No input signal, no load
Standby Current
No input signal,
No input signal,
VSTANDBY=GND for TS486, R L=32Ω
VSTANDBY=Vcc for TS487, RL=32Ω
Typ.
Max.
1.8
2.5
10
1000
VIO
Input Offset Voltage (VICM = VCC/2)
1
IIB
Input Bias Current (VICM = VCC/2) 1)
90
PO
Output Power
THD+N
THD+N
THD+N
THD+N
THD + N
=
=
=
=
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
= 32Ω
32Ω
= 16Ω
16Ω
60
95
Total Harmonic Distortion + Noise (Av=-1)
R L = 32Ω, Pout = 60mW, 20Hz ≤ F ≤ 20kHz
R L = 16Ω, Pout = 90mW, 20Hz ≤ F ≤ 20kHz
Unit
mA
nA
mV
200
64
65
102
108
nA
mW
0.3
0.3
%
Power Supply Rejection Ratio, inputs grounded 2)
(Av=-1), RL>=16Ω, CB=1µF, F = 1kHz, Vripple = 200mVpp
53
58
dB
IO
Max Output Current
THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
106
115
mA
VO
Output Swing
VOL : RL = 32Ω
VOH : R L = 32Ω
VOL : RL = 16Ω
VOH : R L = 16Ω
4.45
PSRR
SNR
Crosstalk
CI
GBP
SR
Signal-to-Noise Ratio (A weighted, Av=-1) 2)
(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
Channel Separation, R L = 32Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R L = 16Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Input Capacitance
4.2
0.45
4.52
0.6
4.35
80
103
83
79
0.5
V
0.7
dB
dB
80
72
1
pF
Gain Bandwidth Product (RL = 32Ω)
1.1
MHz
Slew Rate, Unity Gain Inverting (RL = 16Ω)
0.4
V/µs
1. Only for external gain version.
2. Guaranteed by design and evaluation.
4/31
Min.
TS486-TS487
ELECTRICAL CHARACTERISTICS
VCC = +3.3V, GND = 0V, Tamb = 25°C (unless otherwise specified) 1)
Symbol
ICC
ISTANDBY
Supply Current
No input signal, no load
Standby Current
No input signal,
No input signal,
VSTANDBY=GND for TS486, R L=32Ω
VSTANDBY=Vcc for TS487, RL=32Ω
Typ.
Max.
1.8
2.5
10
1000
Input Offset Voltage (VICM = VCC/2)
1
IIB
Input Bias Current (VICM = VCC/2) 2)
90
PO
Output Power
THD+N
THD+N
THD+N
THD+N
=
=
=
=
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
= 32Ω
32Ω
= 16Ω
16Ω
23
36
Total Harmonic Distortion + Noise (Av=-1)
R L = 32Ω, Pout = 16mW, 20Hz ≤ F ≤ 20kHz
R L = 16Ω, Pout = 35mW, 20Hz ≤ F ≤ 20kHz
Unit
mA
nA
mV
200
26
28
38
42
nA
mW
0.3
0.3
%
Power Supply Rejection Ratio, inputs grounded 3)
(Av=-1), RL>=16Ω, CB=1µF, F = 1kHz, Vripple = 200mVpp
53
58
dB
IO
Max Output Current
THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
64
75
mA
VO
Output Swing
VOL : RL = 32Ω
VOH : R L = 32Ω
VOL : RL = 16Ω
VOH : R L = 16Ω
PSRR
SNR
Crosstalk
CI
GBP
SR
2.
3.
Min.
VIO
THD + N
1.
Parameter
Signal-to-Noise Ratio (A weighted, Av=-1) 3)
(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
Channel Separation, R L = 32Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R L = 16Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Input Capacitance
2.68
0.3
3
0.45
2.85
80
98
2.85
80
76
0.38
V
0.52
dB
dB
77
69
1
pF
Gain Bandwidth Product (RL = 32Ω)
1.1
MHz
Slew Rate, Unity Gain Inverting (RL = 16Ω)
0.4
V/µs
All electrical values are guaranted with correlation measurements at 2V and 5V.
Only for external gain version.
Guaranteed by design and evaluation.
5/31
TS486-TS487
ELECTRICAL CHARACTERISTICS
VCC = +2.5V, GND = 0V, Tamb = 25°C (unless otherwise specified)1)
Symbol
Typ.
Max.
1.7
2.5
Standby Current
No input signal, VSTANDBY=GND for TS486, R L=32Ω
No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
10
1000
VIO
Input Offset Voltage (VICM = VCC/2)
1
IIB
Input Bias Current (VICM = VCC/2) 2)
90
PO
Output Power
THD+N
THD+N
THD+N
THD+N
ICC
ISTANDBY
THD + N
Supply Current
No input signal, no load
=
=
=
=
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
= 32Ω
32Ω
= 16Ω
16Ω
17.5
Total Harmonic Distortion + Noise (Av=-1)
R L = 32Ω, Pout = 10mW, 20Hz ≤ F ≤ 20kHz
R L = 16Ω, Pout = 16mW, 20Hz ≤ F ≤ 20kHz
mA
nA
mV
200
13
14
21
22
nA
mW
0.3
0.3
%
58
dB
IO
Max Output Current
THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
45
56
mA
VO
Output Swing
VOL : RL = 32Ω
VOH : R L = 32Ω
VOL : RL = 16Ω
VOH : R L = 16Ω
Crosstalk
CI
GBP
SR
Signal-to-Noise Ratio (A weighted, Av=-1) 3)
(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
Channel Separation, R L = 32Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R L = 16Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Input Capacitance
1.97
0.25
2.25
0.35
2.15
80
95
2.14
80
76
0.32
V
0.45
dB
dB
77
69
1
pF
Gain Bandwidth Product (RL = 32Ω)
1.1
MHz
Slew Rate, Unity Gain Inverting (RL = 16Ω)
0.4
V/µs
All electrical values are guaranted with correlation measurements at 2V and 5V.
Only for external gain version.
Guaranteed by design and evaluation.
6/31
12.5
Unit
53
SNR
2.
3.
Min.
Power Supply Rejection Ratio, inputs grounded 3)
(Av=-1), RL>=16Ω, CB=1µF, F = 1kHz, Vripple = 200mVpp
PSRR
1.
Parameter
TS486-TS487
ELECTRICAL CHARACTERISTICS
VCC = +2V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Typ.
Max.
1.7
2.5
Standby Current
No input signal, VSTANDBY=GND for TS486, R L=32Ω
No input signal, VSTANDBY=Vcc for TS487, RL=32Ω
10
1000
VIO
Input Offset Voltage (VICM = VCC/2)
1
IIB
Input Bias Current (VICM = VCC/2) 1)
90
PO
Output Power
THD+N
THD+N
THD+N
THD+N
ICC
ISTANDBY
THD + N
Parameter
Min.
Supply Current
No input signal, no load
=
=
=
=
0.1% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
0.3% Max, F = 1kHz, RL
1% Max, F = 1kHz, R L =
= 32Ω
32Ω
= 16Ω
16Ω
7
9.5
Total Harmonic Distortion + Noise (Av=-1)
R L = 32Ω, Pout = 6.5mW, 20Hz ≤ F ≤ 20kHz
R L = 16Ω, Pout = 8mW, 20Hz ≤ F ≤ 20kHz
Unit
mA
nA
mV
200
8
9
12
13
nA
mW
0.3
0.3
%
Power Supply Rejection Ratio, inputs grounded 2)
(Av=-1), RL>=16Ω, CB=1µF, F = 1kHz, Vripple = 200mVpp
52
57
dB
IO
Max Output Current
THD +N ≤ 1%, RL = 16Ω connected between out and VCC/2
33
41
mA
VO
Output Swing
VOL : RL = 32Ω
VOH : R L = 32Ω
VOL : RL = 16Ω
VOH : R L = 16Ω
PSRR
SNR
Crosstalk
CI
GBP
SR
Signal-to-Noise Ratio (A weighted, Av=-1) 2)
(RL = 32Ω, THD +N < 0.4%, 20Hz ≤ F ≤ 20kHz)
Channel Separation, R L = 32Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, R L = 16Ω, Av=-1
F = 1kHz
F = 20Hz to 20kHz
Input Capacitance
1.53
0.24
1.73
0.33
1.63
80
93
1.67
80
76
0.29
V
0.41
dB
dB
77
69
1
pF
Gain Bandwidth Product (RL = 32Ω)
1.1
MHz
Slew Rate, Unity Gain Inverting (RL = 16Ω)
0.4
V/µs
1. Only for external gain version.
2. Guaranteed by design and evaluation.
7/31
TS486-TS487
Index of Graphs
Description
Figure
Page
1 to 10
9 to 10
11
10
Current Consumption vs Standby Voltage
12 to 17
10 to 11
Output Power vs Power Supply Voltage
18 to19
11 to 12
Output Power vs Load Resistor
20 to 23
12
Power Dissipation vs Output Power
24 to 27
12 to 13
Power Derating vs Ambiant Temperature
28
13
Output Voltage Swing vs Supply Voltage
29
13
Low Frequency Cut Off vs Input Capacitor for fixed gain versions
30
13
THD + N vs Output Power
31 to 39
14 to 15
THD + N vs Frequency
40 to 42
15
Crosstalk vs Frequency
43 to 48
16
Signal to Noise Ratio vs Power Supply Voltage
49 to 50
17
PSRR vs Frequency
51 to 56
17 to 18
THD + N vs Output Power
57 to 65
19 to 20
THD + N vs Frequency
66 to 68
20
Crosstalk vs Frequency
69 to 72
21
Signal to Noise Ratio vs Power Supply Voltage
73 to 74
21
PSRR vs Frequency
75 to 79
22
THD + N vs Output Power
80 to 88
22 to 24
THD + N vs Frequency
89 to 91
24
Crosstalk vs Frequency
92 to 95
24
Signal to Noise Ratio vs Power Supply Voltage
96 to 97
25
PSRR vs Frequency
98 to 102
26
Common Curves
Open Loop Gain and Phase vs Frequency
Current Consumption vs Power Supply Voltage
Curves With 0dB Gain Setting (Av=-1)
Curves With 6dB Gain Setting (Av=-2)
Curves With 12dB Gain Setting (Av=-4)
8/31
TS486-TS487
Fig. 1: Open Loop Gain and Phase vs
Frequency
Fig. 2: Open Loop Gain and Phase vs
Frequency
180
Gain
140
60
100
Phase
80
20
60
0
40
100
Phase
80
20
60
0
40
20
-20
40
20
-20
0
-40
0.1
1
10
100
Frequency (kHz)
1000
0
-20
10000
-40
0.1
Fig. 3: Open Loop Gain and Phase vs
Frequency
1
10
100
Frequency (kHz)
1000
-20
10000
Fig. 4: Open Loop Gain and Phase vs
Frequency
180
Vcc = 2V
ZL = 16Ω
Tamb = 25°C
80
Gain
60
180
Vcc = 2V
ZL = 16Ω +400pF
Tamb = 25°C
80
160
Gain
140
60
100
Phase
80
20
60
0
40
20
80
20
60
40
20
-20
0
1
10
100
Frequency (kHz)
1000
0
-20
10000
-40
0.1
Fig. 5: Open Loop Gain and Phase vs
Frequency
1
10
100
Frequency (kHz)
1000
-20
10000
Fig. 6: Open Loop Gain and Phase vs
Frequency
180
Vcc = 5V
ZL = 32Ω
Tamb = 25° C
80
Gain
60
180
Vcc = 5V
ZL = 32Ω +400pF
Tamb = 25° C
80
160
Gain
140
60
Phase
80
60
0
40
20
-20
40
1
10
100
Frequency (kHz)
1000
-20
10000
140
20
100
Phase
80
60
0
40
20
-20
0
-40
0.1
160
120
Gain (dB)
20
100
Phase (Deg)
Gain (dB)
120
40
140
100
Phase
0
40
-20
160
120
Gain (dB)
40
Phase (Deg)
Gain (dB)
120
-40
0.1
140
120
Gain (dB)
40
Phase (Deg)
Gain (dB)
120
160
Phase (Deg)
60
Vcc = 5V
ZL = 16Ω +400pF
Tamb = 25°C
Phase (Deg)
Gain
180
80
160
Phase (Deg)
Vcc = 5V
ZL = 16Ω
Tamb = 25°C
80
0
-40
0.1
1
10
100
Frequency (kHz)
1000
-20
10000
9/31
TS486-TS487
Fig. 7: Open Loop Gain and Phase vs
Frequency
Fig. 8: Open Loop Gain and Phase vs
Frequency
180
60
Gain
140
60
100
Phase
20
80
60
0
40
100
Phase
20
80
60
0
40
20
-20
40
20
-20
0
-40
0.1
1
10
100
Frequency (kHz)
0
-20
10000
1000
-40
0.1
Fig. 9: Open Loop Gain and Phase vs
Frequency
1
10
100
Frequency (kHz)
-20
10000
1000
Fig. 10: Open Loop Gain and Phase vs
Frequency
180
80
Vcc = 5V
RL = 600Ω
Tamb = 25°C
Gain
60
180
80
160
140
Vcc = 2V
RL = 600Ω
Tamb = 25°C
Gain
60
Phase
60
0
40
20
-20
Gain (dB)
20
80
Phase (Deg)
Gain (dB)
100
40
20
80
Phase
60
0
40
20
-20
0
-20
1
10
100
1000
Frequency (kHz)
140
100
0
-40
0.1
160
120
120
40
140
120
Gain (dB)
40
Phase (Deg)
Gain (dB)
120
160
10000
Fig. 11: Current Consumption vs Power Supply
Voltage
-20
-40
0.1
1
10
100
Frequency (kHz)
1000
10000
Fig. 12: Current Consumption vs Standby
Voltage
2.0
2.0
Ta=85°C
Current Consumption (mA)
Current Consumption (mA)
No load
1.5
Ta=25°C
Ta=-40° C
1.0
0.5
0.0
1
2
3
Power Supply Voltage (V)
10/31
1.5
Ta=85°C
Ta=25° C
1.0
Ta=-40°C
0.5
TS486
Vcc = 5V
No load
0.0
0
4
Phase (Deg)
Gain
180
Vcc = 2V
ZL = 32Ω +400pF
Tamb = 25° C
80
160
5
0
1
2
3
Standby Voltage (V)
4
5
Phase (Deg)
Vcc = 2V
ZL = 32Ω
Tamb = 25°C
80
TS486-TS487
Fig. 13: Current Consumption vs Standby
Voltage
Fig. 14: Current Consumption vs Standby
Voltage
2.0
2.0
Current Consumption (mA)
Current Consumption (mA)
Ta=85°C
1.5
Ta=85°C
Ta=25°C
1.0
Ta=-40°C
0.5
TS486
Vcc = 3.3V
No load
1.5
Ta=25°C
1.0
Ta=-40°C
0.5
TS486
Vcc = 2V
No load
0.0
0.0
0
1
2
3
0
1
Standby Voltage (V)
Fig. 15: Current Consumption vs Standby
Voltage
Fig. 16: Current Consumption vs Standby
Voltage
2.5
2.0
Ta=25°C
Ta=25° C
Current Consumption (mA)
Current Consumption (mA)
Ta=85°C
2.0
1.5
Ta=-40° C
1.0
0.5
TS487
Vcc = 5V
No load
0.0
1.5
Ta=85° C
Ta=-40°C
1.0
0.5
TS487
Vcc = 3.3V
No load
0.0
0
1
2
3
4
5
0
1
Standby Voltage (V)
200
Ta=85° C
Output power (mW)
1.5
Ta=25°C
1.0
Ta=-40° C
1
125
THD+N=1%
THD+N=10%
100
75
50
25
0.0
Standby Voltage (V)
RL = 16Ω
175 F = 1kHz
BW < 125kHz
150 Tamb = 25°C
THD+N=0.1%
TS487
Vcc = 2V
No load
0
3
Fig. 18: Output Power vs Power Supply
Voltage
2.0
0.5
2
Standby Voltage (V)
Fig. 17: Current Consumption vs Standby
Voltage
Current Consumption (mA)
2
Standby Voltage (V)
2
0
2.0
2.5
3.0
3.5
4.0
Vcc (V)
4.5
5.0
5.5
11/31
TS486-TS487
Fig. 20: Output Power vs Load Resistor
200
RL = 32Ω
F = 1kHz
100
BW < 125kHz
Tamb = 25° C
Vcc = 5V
F = 1kHz
BW < 125kHz
Tamb = 25° C
180
THD+N=1%
75
THD+N=10%
50
25
THD+N=1%
160
Output power (mW)
Output power (mW)
Fig. 19: Output Power vs Power Supply
Voltage
THD+N=0.1%
140
120
100
THD+N=10%
80
60
40
THD+N=0.1%
20
0
2.0
2.5
3.0
3.5
4.0
Vcc (V)
4.5
5.0
0
5.5
8
16
24
32
40
48
Load Resistance (W)
56
64
Fig. 22: Output Power vs Load Resistor
Fig. 21: Output Power vs Load Resistor
50
THD+N=1%
60
Output power (mW)
Vcc = 3.3V
F = 1kHz
BW < 125kHz
Tamb = 25°C
50
40
THD+N=10%
30
20
40
10
30
25
THD+N=10%
20
15
THD+N=0.1%
5
8
16
24
32
40
48
Load Resistance ( W)
56
0
64
Fig. 23: Output Power vs Load Resistor
THD+N=1%
15
THD+N=10%
10
Power Dissipation (mW)
Vcc = 2V
F = 1kHz
BW < 125kHz
Tamb = 25°C
20
8
16
24
32
40
48
Load Resistance (W)
56
Vcc=5V
80 F=1kHz
THD+N<1%
RL=16Ω
60
40
RL=32Ω
20
5
THD+N=0.1%
0
0
8
12/31
16
24
32
40
48
Load Resistance ( W)
56
64
Fig. 24: Power Dissipation vs Output Power
25
Output power (mW)
THD+N=1%
35
10
THD+N=0.1%
0
Vcc = 2.5V
F = 1kHz
BW < 125kHz
Tamb = 25°C
45
Output power (mW)
70
64
0
20
40
60
80
Output Power (mW)
100
TS486-TS487
Fig. 25: Power Dissipation vs Output Power
Fig. 26: Power Dissipation vs Output Power
Vcc=3.3V
F=1kHz
THD+N<1%
Power Dissipation (mW)
Power Dissipation (mW)
40
30
RL=16Ω
20
RL=32Ω
10
0
20
RL=16Ω
10
RL=32Ω
0
0
10
20
30
Vcc=2.5V
F=1kHz
THD+N<1%
40
0
5
Fig. 27: Power Dissipation vs Output Power
(W)
1.6
10
RL=16Ω
5
QFN8
1.4
1.2
Power Dissipation
Power Dissipation (mW)
1.8
1.0
S O8
0.8
0.6
0.4
RL=32Ω
MiniSO8
0.2
0.0
0
0
2
4
6
8
10
0
12
Output Power (mW)
Fig. 29: Output Voltage Swing vs Power Supply
Voltage
50
75
100
Ambia nt Te mpe rature ( C)
125
150
Fig. 30: Low Frequency Cut Off vs Input
Capacitor for fixed gain versions.
(Hz)
3.0
2.5
RL=32Ω
RL=16Ω
1.5
1.0
-3dB Cut Off Frequency
3.5
2.0
25
100
Tamb=25°C
4.0
VOH & VOL (V)
20
2.0
Vcc=2V
F=1kHz
THD+N<1%
4.5
15
Fig. 28: Power Derating vs Ambiant
Temperature
15
5.0
10
Output Power (mW)
Output Power (mW)
RinMIN=16kΩ
RinTYP =20kΩ
10
RinMAX=24kΩ
0.5
0.0
2.0
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
1
0.1
1
Inp u t Ca p a c ito r Cin (mF)
13/31
TS486-TS487
Fig. 31: THD + N vs Output Power
Fig. 32: THD + N vs Output Power
10
RL = 16Ω
F = 20Hz
Av = -1
1 Cb = 1 µF
BW < 22kHz
Tamb = 25° C
0.1
RL = 32Ω
F = 20Hz
Av = -1
1 Cb = 1µF
BW < 22kHz
Tamb = 25°C
THD + N (%)
THD + N (%)
10
Vcc=2V
Vcc=2.5V
Vcc=2V
0.1
Vcc=2.5V
0.01
0.01
Vcc=3.3V
1
Vcc=5V
Vcc=3.3V
10
Output Power (mW)
100
1
Fig. 33: THD + N vs Output Power
100
Fig. 34: THD + N vs Output Power
10
10
RL = 16Ω
F = 1kHz
Av = -1
1 Cb = 1µ F
BW < 125kHz
Tamb = 25°C
Vcc=2V
Vcc=2.5V
THD + N (%)
RL = 600Ω, F = 20Hz
Av = -1, Cb = 1µF
BW < 22kHz
Tamb = 25°C
1
THD + N (%)
Vcc=5V
10
Output Power (mW)
Vcc=3.3V
0.1
Vcc=5V
0.1
Vcc=2V
Vcc=2.5V
0.01
0.01
1E-3
0.01
0.1
Output Voltage (Vrms)
1
1
Fig. 35: THD + N vs Output Power
10
Output Power (mW)
100
10
RL = 32Ω
F = 1kHz
Av = -1
1
Cb = 1µF
BW < 125kHz
Tamb = 25°C
Vcc=2V
1
Vcc=2.5V
THD + N (%)
THD + N (%)
Vcc=5V
Fig. 36: THD + N vs Output Power
10
0.1
Vcc=2V
Vcc=3.3V
0.1
Vcc=5V
0.01
0.01
Vcc=2.5V
Vcc=3.3V
Vcc=5V
1E-3
1
14/31
Vcc=3.3V
10
Output Power (mW)
100
RL = 600Ω , F = 1kHz
Av = -1, Cb = 1µF
BW < 125kHz, Tamb = 25° C
1E-3
0.01
0.1
Output Voltage (Vrms)
1
TS486-TS487
Fig. 37: THD + N vs Output Power
Fig. 38: THD + N vs Output Power
10
RL = 16Ω
F = 20kHz
Av = -1
Cb = 1µF
BW < 125kHz
1 Tamb = 25°C
THD + N (%)
THD + N (%)
10
Vcc=2V
Vcc=2.5V
RL = 32Ω
F = 20kHz
Av = -1
Cb = 1µF
BW < 125kHz
1 Tamb = 25°C
Vcc=2V
Vcc=2.5V
0.1
0.1
Vcc=3.3V
1
Vcc=5V
Vcc=3.3V
10
Output Power (mW)
100
Fig. 39: THD + N vs Output Power
1
RL=16Ω
Av=-1
Cb = 1µF
Bw < 125kHz
Tamb = 25° C
Vcc=2V
1
THD + N (%)
THD + N (%)
Vcc=2.5V
0.1
Vcc=2V, Po=7.5mW
0.1
Vcc=5V, Po=85mW
Vcc=3.3V
RL = 600Ω , F = 20kHz
Av = -1, Cb = 1µF
BW < 125kHz, Tamb = 25°C
1E-3
0.01
Vcc=5V
0.1
Output Voltage (Vrms)
0.01
20
1
Fig. 41: THD + N vs Frequency
100
1000
Frequency (Hz)
10000 20k
Fig. 42: THD + N vs Frequency
RL=32Ω
Av=-1
Cb = 1 µF
Bw < 125kHz
0.1 Tamb=25°C
RL=600Ω
Av=-1
Cb = 1µF
0.1 Bw < 125kHz
Tamb = 25°C
THD + N (%)
THD + N (%)
100
Fig. 40: THD + N vs Frequency
10
0.01
Vcc=5V
10
Output Power (mW)
Vcc=2V, Po=6mW
Vcc=5V, Vo=1.3Vrms
Vcc=2V, Vo=0.5Vrms
0.01
Vcc=5V, Po=55mW
0.01
20
100
1000
Frequency (Hz)
10000 20k
1E-3
20
100
1000
Frequency (Hz)
10000 20k
15/31
TS486-TS487
Fig. 43: Crosstalk vs Frequency
Fig. 44: Crosstalk vs Frequency
60
ChA to ChB
ChB to ChA
RL=16Ω
Vcc=5V
Pout=85mW
Av=-1
Cb = 1µF
Bw < 125kHz
Tamb=25°C
40
20
0
20
ChB to ChA
80
Crosstalk (dB)
Crosstalk (dB)
80
ChA to ChB
60
RL=16Ω
Vcc=2V
Pout=7.5mW
Av=-1
Cb = 1µF
Bw < 125kHz
Tamb=25° C
40
20
0
100
1000
Frequency (Hz)
10000 20k
Fig. 45: Crosstalk vs Frequency
20
100
1000
Frequency (Hz)
10000 20k
Fig. 46: Crosstalk vs Frequency
80
80
60
ChB to ChA
RL=32Ω
Vcc=5V
Pout=55mW
Av=-1
Cb = 1µF
Bw < 125kHz
Tamb=25°C
40
20
0
20
100
1000
Frequency (Hz)
Crosstalk (dB)
Crosstalk (dB)
ChA to ChB
ChB to ChA
RL=32Ω
Vcc=2V
Pout=6mW
Av=-1
Cb = 1µF
Bw < 125kHz
Tamb=25° C
40
20
0
10000 20k
Fig. 47: Crosstalk vs Frequency
ChA to ChB
60
20
100
1000
Frequency (Hz)
10000 20k
Fig. 48: Crosstalk vs Frequency
80
80
Cb = 4.7µ F
40
20
0
20
16/31
RL=16Ω
Vcc=5V
Pout=85mW
Av=-1
ChB to ChA
Bw < 125kHz
Tamb=25°C
Crosstalk (dB)
Crosstalk (dB)
Cb = 1µF
Cb = 1µ F
60
60
Cb = 4.7µF
RL=32Ω
Vcc=5V
Pout=55mW
Av=-1
ChB to ChA
Bw < 125kHz
Tamb=25°C
40
20
0
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
TS486-TS487
104 Av = -1
Cb = 1µF
102 THD+N < 0.4%
Tamb = 25°C
100
Fig. 50: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
RL=600Ω
Signal to Noise Ratio (dB)
Signal to Noise Ratio (dB)
Fig. 49: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
98
96
RL=32Ω
94
RL=16Ω
92
90
2.0
2.5
3.0
98
RL=32Ω
96
94
RL=16Ω
92
3.5
4.0
4.5
90
2.0
5.0
2.5
Power Supply Voltage (V)
4.0
4.5
5.0
0
Vripple = 200mVpp
Av = -1
Input = grounded
Cb = 1µF
RL >= 16Ω
Tamb = 25° C
-20
-30
-20
Vcc = 2V
-40
Vripple = 200mVpp
Av = -1
Input = grounded
Vcc = 5V
RL >= 16Ω
Tamb = 25°C
-10
PSRR (dB)
-10
-50
-60
-30
-40
Cb = 1µF
-50
-60
Vcc = 5V, 3.3V & 2.5V
-70
Cb = 2.2µF
Cb = 4.7µF
-80
-80
100
1000
10000
Frequency (Hz)
100000
Fig. 53: PSRR vs Input Capacitor
100
1000
10000
Frequency (Hz)
100000
Fig. 54: PSRR vs Output Capacitor
0
0
-20
Cin = 1µF, 220nF
-30
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Tamb = 25°C
-10
-20
PSRR (dB)
-10
PSRR (dB)
3.5
Fig. 52: PSRR vs Bypass Capacitor
0
PSRR (dB)
3.0
Power Supply Voltage (V)
Fig. 51: PSRR vs Power Supply Voltage
-70
RL=600Ω
104 Av = -1
Cb = 1µ F
102 THD+N < 0.4%
Tamb = 25°C
100
-40
-50
Cout = 470µF
-30
-40
-50
-60
-60
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
Tamb = 25°C
Cout = 220µF
-70
Cin = 100nF
-70
-80
100
1000
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
PSRR (dB)
-20
Cout = 470µF
-30
-10
-20
PSRR (dB)
-10
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 32Ω
RL >= 16Ω
Tamb = 25°C
-40
-50
-60
18/31
Vcc = 2V
-40
-50
-60
Cout = 100µF
-70
-70
-80
-30
Vripple = 200mVpp
Av = -1
Input = floating
Cb = 1µF
RL >= 16Ω
Tamb = 25°C
Vcc = 5V, 3.3V & 2.5V
-80
100
1000
10000
Frequency (Hz)
100000
100
1000
10000
Frequency (Hz)
100000
TS486-TS487
Fig. 57: THD + N vs Output Power
Fig. 58: THD + N vs Output Power
10
RL = 16Ω
F = 20Hz
Av = -2
1 Cb = 1 µF
BW < 22kHz
Tamb = 25° C
0.1
RL = 32Ω
F = 20Hz
Av = -2
1 Cb = 1µF
BW < 22kHz
Tamb = 25°C
THD + N (%)
THD + N (%)
10
Vcc=2V
Vcc=2.5V
Vcc=2V
0.1
Vcc=2.5V
0.01
Vcc=3.3V
1
0.01
Vcc=5V
10
Output Power (mW)
100
Fig. 59: THD + N vs Output Power
100
10
RL = 600Ω, F = 20Hz
Av = -2, Cb = 1µF
BW < 22kHz
Tamb = 25°C
Vcc=2V
Vcc=2.5V
THD + N (%)
THD + N (%)
Vcc=5V
10
Output Power (mW)
Fig. 60: THD + N vs Output Power
10
1
Vcc=3.3V
1
Vcc=3.3V
0.1
Vcc=5V
RL = 16Ω
F = 1kHz
Av = -2
1 Cb = 1µF
BW < 125kHz
Tamb = 25°C
0.1
Vcc=2V
Vcc=2.5V
0.01
0.01
1E-3
0.01
0.1
Output Voltage (Vrms)
1
Fig. 61: THD + N vs Output Power
Vcc=5V
10
Output Power (mW)
100
Fig. 62: THD + N vs Output Power
10
10
RL = 32Ω
F = 1kHz
Av = -2
1 Cb = 1µF
BW < 125kHz
Tamb = 25° C
Vcc=2V
1
Vcc=2.5V
THD + N (%)
THD + N (%)
Vcc=3.3V
1
Vcc=2V
0.1
Vcc=2.5V
0.01
Vcc=5V
0.01
Vcc=3.3V
1
Vcc=3.3V
0.1
RL = 600Ω , F = 1kHz
Av = -2, Cb = 1µF
BW < 125kHz, Tamb = 25°C
Vcc=5V
10
Output Power (mW)
100
1E-3
0.01
0.1
Output Voltage (Vrms)
1
19/31
TS486-TS487
Fig. 63: THD + N vs Output Power
Fig. 64: THD + N vs Output Power
10
RL = 16Ω
F = 20kHz
Av = -2
Cb = 1µF
BW < 125kHz
1 Tamb = 25°C
THD + N (%)
THD + N (%)
10
Vcc=2V
Vcc=2.5V
RL = 32Ω
F = 20kHz
Av = -2
Cb = 1µF
BW < 125kHz
1 Tamb = 25°C
Vcc=2V
0.1
0.1
Vcc=3.3V
1
100
Fig. 65: THD + N vs Output Power
1
RL=16Ω
Av=-2
Cb = 1µF
Bw < 125kHz
Tamb = 25° C
Vcc=2V
1
THD + N (%)
THD + N (%)
Vcc=2.5V
0.1
RL = 600Ω , F = 20kHz
Av = -2, Cb = 1µF
BW < 125kHz, Tamb = 25°C
1E-3
0.01
100
Vcc=2V, Po=7.5mW
0.1
Vcc=3.3V
Vcc=5V
0.1
Output Voltage (Vrms)
Vcc=5V, Po=85mW
0.01
20
1
Fig. 67: THD + N vs Frequency
100
1000
Frequency (Hz)
10000 20k
Fig. 68: THD + N vs Frequency
RL=32Ω
Av=-2
Cb = 1 µF
Bw < 125kHz
0.1 Tamb=25°C
THD + N (%)
THD + N (%)
Vcc=5V
10
Output Power (mW)
Fig. 66: THD + N vs Frequency
10
0.01
Vcc=3.3V
Vcc=2.5V
Vcc=5V
10
Output Power (mW)
Vcc=2V, Po=6mW
RL=600Ω
Av=-2
Cb = 1µF
0.1 Bw < 125kHz
Tamb = 25°C
Vcc=5V, Vo=1.3Vrms
Vcc=2V, Vo=0.5Vrms
0.01
0.01
Vcc=5V, Po=55mW
1E-3
20
20/31
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
TS486-TS487
Fig. 70: Crosstalk vs Frequency
Fig. 69: Crosstalk vs Frequency
ChB to ChA
60
ChA to ChB
RL=16Ω
Vcc=5V
Pout=85mW
Av=-2
Cb = 1µ F
Bw < 125kHz
Tamb=25°C
40
20
0
20
ChB to ChA
80
Crosstalk (dB)
Crosstalk (dB)
80
60
ChA to ChB
RL=16Ω
Vcc=2V
Pout=7.5mW
Av=-2
Cb = 1µF
Bw < 125kHz
Tamb=25° C
40
20
0
100
1000
Frequency (Hz)
10000 20k
20
100
1000
Frequency (Hz)
10000 20k
Fig. 72: Crosstalk vs Frequency
Fig. 71: Crosstalk vs Frequency
80
80
Crosstalk (dB)
Crosstalk (dB)
60
ChB to ChA
RL=32Ω
Vcc=5V
Pout=55mW
Av=-2
Cb = 1µ F
Bw < 125kHz
Tamb=25°C
40
20
0
20
100
100
RL=32Ω
90
88
RL=16Ω
86
84
82
2.0
100
10000 20k
1000
Frequency (Hz)
Av = -2
Cb = 1µ F
100 THD+N < 0.4%
Tamb
= 25°C
98
102
94
92
20
104
RL=600Ω
Av = -2
Cb = 1µF
THD+N < 0.4%
Tamb = 25°C
RL=32Ω
Vcc=2V
Pout=6mW
Av=-2
Cb = 1µF
Bw < 125kHz
Tamb=25° C
Fig. 74: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Signal to Noise Ratio (dB)
Signal to Noise Ratio (dB)
96
0
10000 20k
1000
Frequency (Hz)
ChB to ChA
40
20
Fig. 73: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
98
ChA to ChB
ChA to ChB
60
RL=600Ω
96
94
RL=32Ω
92
90
88
RL=16Ω
86
84
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
82
2.0
2.5
3.0
3.5
4.0
4.5
5.0
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
Input = grounded
Cb = 1µF
RL >= 16Ω
Tamb = 25° C
PSRR (dB)
-20
-30
-20
Vcc = 2V
-40
Vripple = 200mVpp
Av = -2
Input = grounded
Vcc = 5V
RL >= 16Ω
Tamb = 25°C
-10
PSRR (dB)
-10
-50
-30
-40
Cb = 1µF
-50
-60
-60
Vcc = 5V, 3.3V & 2.5V
-70
100
Cb = 4.7µF
1000
10000
Frequency (Hz)
-70
100000
Fig. 77: PSRR vs Input Capacitor
Cin = 1µF, 220nF
-30
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Tamb = 25°C
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
Tamb = 25°C
-10
-20
PSRR (dB)
PSRR (dB)
-20
-40
-50
Cout = 470µF
-30
-40
-50
Cin = 100nF
-60
100
Cout = 220µF
-60
1000
10000
Frequency (Hz)
100000
Fig. 79: PSRR vs Output Capacitor
-70
100
1000
10000
Frequency (Hz)
100000
Fig. 80: THD + N vs Output Power
10
0
Cout = 470µF
-30
THD + N (%)
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 32Ω
RL >= 16Ω
Tamb = 25°C
-10
PSRR (dB)
100000
0
-10
-20
1000
10000
Frequency (Hz)
Fig. 78: PSRR vs Output Capacitor
0
-70
Cb = 2.2µF
100
-40
RL = 16Ω
F = 20Hz
Av = -4
Cb = 1µF
1
BW < 22kHz
Tamb = 25°C
Vcc=2V
Vcc=2.5V
0.1
-50
Cout = 100µF
-60
Vcc=3.3V
0.01
-70
100
22/31
1000
10000
Frequency (Hz)
100000
1
Vcc=5V
10
Output Power (mW)
100
TS486-TS487
Fig. 81: THD + N vs Output Power
Fig. 82: THD + N vs Output Power
10
10
RL = 600Ω, F = 20Hz
Av = -4, Cb = 1µF
BW < 22kHz
Tamb = 25°C
1
THD + N (%)
THD + N (%)
RL = 32Ω
F = 20Hz
Av = -4
Cb = 1µF
1 BW < 22kHz
Tamb = 25°C
Vcc=2V
Vcc=2V
Vcc=2.5V
Vcc=3.3V
0.1
Vcc=5V
0.1
Vcc=2.5V
0.01
Vcc=3.3V
0.01
1
Vcc=5V
10
Output Power (mW)
1E-3
0.01
100
Fig. 83: THD + N vs Output Power
1
Fig. 84: THD + N vs Output Power
10
10
RL = 16Ω
F = 1kHz
Av = -4
Cb = 1µF
1 BW < 125kHz
Tamb = 25°C
RL = 32Ω
F = 1kHz
Av = -4
Cb = 1µF
1 BW < 125kHz
Tamb = 25°C
THD + N (%)
THD + N (%)
0.1
Output Voltage (Vrms)
Vcc=2V
Vcc=2.5V
Vcc=2V
0.1
0.1
Vcc=2.5V
Vcc=3.3V
0.01
1
Vcc=5V
Vcc=3.3V
10
Output Power (mW)
100
Fig. 85: THD + N vs Output Power
0.01
1
100
Fig. 86: THD + N vs Output Power
10
10
RL = 16Ω
F = 20kHz
Av = -4
Cb = 1µF
BW < 125kHz
Tamb = 25° C
Vcc=2V
1
THD + N (%)
Vcc=2.5V
THD + N (%)
Vcc=5V
10
Output Power (mW)
Vcc=3.3V
0.1
Vcc=2V
1
Vcc=2.5V
0.01
RL = 600Ω, F = 1kHz
Av = -4, Cb = 1µF
BW < 125kHz, Tamb = 25°C
1E-3
0.01
Vcc=5V
0.1
Output Voltage (Vrms)
Vcc=3.3V
1
0.1
1
Vcc=5V
10
Output Power (mW)
100
23/31
TS486-TS487
Fig. 87: THD + N vs Output Power
Fig. 88: THD + N vs Output Power
10
RL = 32Ω
F = 20kHz
Av = -4
Cb = 1µF
BW < 125kHz
Tamb = 25° C
1
Vcc=2V
1
Vcc=2.5V
THD + N (%)
THD + N (%)
10
Vcc=2V
0.1
Vcc=2.5V
0.01
Vcc=3.3V
0.1
1
RL = 600Ω , F = 20kHz
Av = -4, Cb = 1µF
BW < 125kHz, Tamb = 25°C
Vcc=5V
10
Output Power (mW)
Fig. 89: THD + N vs Frequency
Vcc=5V
0.1
Output Voltage (Vrms)
1
Fig. 90: THD + N vs Frequency
THD + N (%)
RL=16Ω
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb = 25° C
THD + N (%)
1E-3
0.01
100
Vcc=3.3V
Vcc=2V, Po=7.5mW
0.1
RL=32Ω
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25° C
0.1
Vcc=2V, Po=6mW
Vcc=5V, Po=85mW
Vcc=5V, Po=55mW
0.01
20
100
1000
Frequency (Hz)
10000 20k
100
1000
Frequency (Hz)
80
RL=600Ω
Av=-4
Cb = 1µ F
0.1 Bw < 125kHz
Tamb = 25° C
ChB to ChA
60
Vcc=2V, Vo=0.5Vrms
0.01
ChA to ChB
RL=16Ω
Vcc=5V
Pout=85mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
40
20
Vcc=5V, Vo=1.3Vrms
1E-3
20
24/31
100
10000 20k
Fig. 92: Crosstalk vs Frequency
Crosstalk (dB)
THD + N (%)
Fig. 91: THD + N vs Frequency
20
1000
Frequency (Hz)
10000 20k
0
20
100
1000
Frequency (Hz)
10000 20k
TS486-TS487
Fig. 93: Crosstalk vs Frequency
Fig. 94: Crosstalk vs Frequency
80
ChB to ChA
80
ChA to ChB
RL=16Ω
Vcc=2V
Pout=7.5mW
Av=-4
Cb = 1µ F
Bw < 125kHz
Tamb=25°C
40
20
0
20
Crosstalk (dB)
Crosstalk (dB)
60
100
1000
Frequency (Hz)
ChA to ChB
60
ChB to ChA
RL=32Ω
Vcc=5V
Pout=55mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25° C
40
20
0
10000 20k
Fig. 95: Crosstalk vs Frequency
20
100
Fig. 96: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
100
80
Av = -4
Cb = 1µF
96 THD+N < 0.4%
Tamb = 25°C
94
Crosstalk (dB)
Signal to Noise Ratio (dB)
98
60
ChA to ChB
ChB to ChA
RL=32Ω
Vcc=2V
Pout=6mW
Av=-4
Cb = 1µF
Bw < 125kHz
Tamb=25°C
40
20
0
20
100
1000
Frequency (Hz)
RL=32Ω
86
84
RL=16Ω
80
2.0
2.5
3.0
3.5
4.0
4.5
5.0
Power Supply Voltage (V)
Fig. 98: PSRR vs Power Supply Voltage
RL=600Ω
Vripple = 200mVpp
Av = -4
Input = grounded
Cb = 1µF
RL >= 16Ω
Tamb = 25°C
-10
PSRR (dB)
Signal to Noise Ratio (dB)
88
0
Av = -4
Cb = 1µ F
96 THD+N < 0.4%
Tamb = 25° C
94
98
92
90
88
RL=32Ω
86
-20
-30
Vcc = 2V
-40
RL=16Ω
82
90
10000 20k
100
84
RL=600Ω
92
82
Fig. 97: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
80
2.0
10000 20k
1000
Frequency (Hz)
-50
Vcc = 5V, 3.3V & 2.5V
2.5
3.0
3.5
4.0
Power Supply Voltage (V)
4.5
5.0
-60
100
1000
10000
Frequency (Hz)
100000
25/31
TS486-TS487
Fig. 99: PSRR vs Input Capacitor
Fig. 100: PSRR vs Bypass Capacitor
0
0
Cin = 1µF, 220nF
-20
Vripple = 200mVpp
Av = -4
Input = grounded
Vcc = 5V
RL >= 16Ω
Tamb = 25° C
-10
-20
PSRR (dB)
PSRR (dB)
-10
Vripple = 200mVpp
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, Rin = 20kΩ
RL >= 16Ω
Tamb = 25°C
-30
-30
-40
Cb = 1µF
-40
-50
-50
Cin = 100nF
-60
100
100000
Fig. 101: PSRR vs Output Capacitor
100
Cout = 470µF
-20
Vripple = 200mVpp
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 16Ω
RL >= 16Ω
Tamb = 25°C
-10
PSRR (dB)
PSRR (dB)
100000
0
-10
-30
Cout = 470µF
-20
Vripple = 200mVpp
Av = -4, Vcc = 5V
Input = grounded
Cb = 1µF, RL = 32Ω
RL >= 16Ω
Tamb = 25°C
-30
-40
-40
-50
-50
26/31
Cb = 2.2µF
1000
10000
Frequency (Hz)
Fig. 102: PSRR vs Output Capacitor
0
-60
Cb = 4.7µF
-60
1000
10000
Frequency (Hz)
Cout = 220µF
Cout = 100µF
-60
100
1000
10000
Frequency (Hz)
100000
100
1000
10000
Frequency (Hz)
100000
TS486-TS487
APPLICATION NOTE:
Vcc
Stdby level
threshold=0.9V
Cs
Cin1
20k
2
+
330nF
Rin1
5
Cb
3
Stdby
+
330nF
1µF
Rin2
BIAS
6
Cin2
20k
220µF
1
+
ZL=32Ohms
+
Cout1
TS486=Stdby
TS487=Stdby
1k
Cout2
+
+
Left In
1µF
8
VCC
-
7
+
20k
+
Right In
+
Rfeed1
Stdby ctrl
+
ZL=32Oh ms
GND
4
220µF
1k
20k
Rfeed2
TS486/487 GENERAL DESCRIPTION
GaindB = 20 Log(RFEED/RIN)
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 RIN and RFEED are proposed to reduce
external parts.
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.
The TS486 and TS487 exhibit a low quiescent
current of typically 1.8mA, allowing usage in
portable applications.
The standby mode is selected using the
SHUTDOWN input. For TS486 (respectively
TS487), the device is in sleep mode when PIN 5 is
connected at GND (resp. VCC).
GAIN SETTING
LOW FREQUENCY ROLL-OFF WITH INPUT
CAPACITORS
The low roll-off frequency of the headphone
amplifiers depends on the input capacitors CIN1
and CIN2 and the input resistors RIN1 and RIN2.
The CIN capacitor in series with the input resistor
RIN of the amplifier is equivalent to a first order
high pass filter.
Assuming that Fmin is the lowest frequency to be
amplified (with a 3dB attenuation), the minimum
value of CIN is:
CIN > 1 / (2*π*Fmin*RIN )
The following curve gives directly the low
frequency roll-off versus the input capacitor CIN
The gain of each inverter amplifier of the TS486
and TS487 is set by the resistors R IN and R FEED.
GainLINEAR = -(RFEED/RIN)
27/31
TS486-TS487
and for various values of the input resistor RIN .
frequency versus the output capacitor COUT in µF
and for the two typical 16Ω and 32Ω impedances:
1000
Low roll-off frequency (Hz)
Low roll-off frequency (Hz)
1000
Rin = 1kW
Rin = 10k W
100
10
Rin = 100kW
1
0.01
Rin = 20kW an d
fix ed g ain ve rs ion s
0.1
1
100
RL = 16W
10
RL = 32W
10
1
10
Cin ( F)
100
1000
10000
C O UT ( F)
The input resistance of the fixed gain version is
typically 20kΩ.
The following curve shows the limits of the roll off
frequency depending on the min. and max. values
of Rin:
-3dB Cut Off Frequency
(Hz)
100
RinMIN=16k Ω
RinTYP =20kΩ
10
1
Inp ut Ca p a c ito r Cin (mF)
LOW FREQUENCY ROLL OFF WITH OUTPUT
CAPACITORS
The DC voltage on the outputs of the TS486/487
is blocked by the output capacitors COUT1 and
COUT2 . Each output capacitor COUT in series with
the resistance of the load RL is equivalent to a first
order high pass filter.
Assuming that Fmin is the lowest frequency to be
amplified (with a 3dB attenuation), the minimum
value of COUT is:
COUT > 1 / (2*π*Fmin*RL)
The following curve gives directly the low roll-off
28/31
The internal bias voltage at Vcc/2 is decoupled
with the external capacitor CB.
The TS486 and TS487 have a specified Power
Supply Rejection Ratio parameter with CB = 1µF.
A higher value of CB improves the PSRR, for
example, a 4.7µF improves the PSRR by 15dB at
200Hz (please, refer to fig. 76 ”PSRR vs Bypass
Capacitor”).
POP PRECAUTIONS
RinMAX=24kΩ
1
0.1
DECOUPLING CAPACITOR C B
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.
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.
TS486-TS487
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO)
s
b1
b
a1
A
a2
C
c1
a3
L
E
e3
D
M
5
1
4
F
8
Millimeters
Inches
Dim.
Min.
A
a1
a2
a3
b
b1
C
c1
D
E
e
e3
F
L
M
S
Typ.
Max.
Min.
Typ.
Max.
0.65
1.75
0.25
1.65
0.85
0.026
0.069
0.010
0.065
0.033
0.35
0.19
0.25
0.48
0.25
0.5
0.014
0.007
0.010
0.019
0.010
0.020
4.8
5.8
5.0
6.2
0.189
0.228
0.197
0.244
0.1
0.004
45° (typ.)
1.27
3.81
3.8
0.4
0.050
0.150
4.0
1.27
0.6
0.150
0.016
0.157
0.050
0.024
8° (max.)
29/31
TS486-TS487
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (miniSO)
k
0,25 mm
.010 inch
GAGE PLANE
C
SEATING
PLANE
E1
L1
L
c
A
E
A2
A1
4
8
1
e
C
ccc
b
D
5
PIN 1 IDENTIFICATION
Dim.
A
A1
A2
b
c
D
E
E1
e
L
L1
k
aaa
30/31
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
0.050
0.780
0.250
0.100
0.860
0.330
1.100
0.150
0.940
0.400
0.002
0.031
0.010
0.004
0.034
0.013
0.043
0.006
0.037
0.016
0.130
2.900
4.750
2.900
0.180
3.000
4.900
3.000
0.650
0.550
0.950
3d
0.230
3.100
5.050
3.100
0.005
0.114
0.187
0.114
0.700
0.016
6d
0.100
0d
0.007
0.118
0.193
0.118
0.026
0.022
0.037
3d
0.400
0d
0.009
0.122
0.199
0.122
0.028
6d
0.004
TS486-TS487
PACKAGE MECHANICAL DATA
8 CONNECTIONS - Dual Micro Leadframe Package (QFN)
Millimeters
Dimensions
Min.
Typ.
Max.
A
A1
A2
A3
0.80
0.90
0.02
0.70
0.20
1.00
0.05
b
D
D2
E
E2
e
L
ddd
0.18
0.23
3.00
2.35
3.00
1.35
0.50
0.55
0.30
2.20
1.20
0.45
2.45
1.45
0.65
0.08
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mentioned in this publication are subject to change without notice. This publ ication supersedes and replaces all informatio n
previously suppl ied. STMicroelectronics products are not authorized for use as critical components in life support devices or
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31/31