The TS488/9 is an enhancement of TS486/7 that
eliminates pop and click noise and reduces the
number of external passive components.
The TS488/9 is a dual audio power amplifier
capable of driving, in single-ended mode, either a
16 Ω or a 32 Ω stereo headset.
Capable of descending to low voltages, it delivers
up to 31 mW per channel (into 16 Ω loads) of
continuous average power with 0.1% THD+N in
the audio bandwidth from a 2.5 V power supply.
An externally-controlled standby mode reduces
the supply current to 10 nA (typ.). The unity gain
stable TS488/9 is configured by external gainsetting resistors.
May 2012Doc ID 11971 Rev 51/32
This is information on a product in full production.
Inverting input resistor that sets the closed loop gain in conjunction with R
This resistor also forms a high pass filter with Cin (F
Input coupling capacitor that blocks the DC voltage at the amplifier’s input terminal.
Feedback resistor that sets the closed loop gain in conjunction with Rin.
AV= Closed Loop Gain= -R
feed/Rin
.
Supply output capacitor that provides power supply filtering.
Bypass capacitor that provides half supply filtering.
Output coupling capacitor that blocks the DC voltage at the load input terminal.
This capacitor also forms a high pass with R
(F
L
= 1 / (2 x Pi x R
c
= 1 / (2 x Pi x R
c
x C
L
x Cin)).
in
out
)).
feed
.
Doc ID 11971 Rev 53/32
Absolute maximum ratings and operating conditionsTS488-TS489
2 Absolute maximum ratings and operating conditions
Table 2.Absolute maximum ratings
SymbolParameterValueUnit
V
CC
V
T
stg
T
Supply voltage
Input voltage -0.3 V to V
i
Storage temperature-65 to +150°C
Maximum junction temperature150°C
j
Thermal resistance junction-to-ambient
R
thja
MiniSO-8
DFN8
Power dissipation
P
diss
MiniSO-8
DFN8
ESDHuman body model (pin to pin)2kV
ESD
Machine model
220 pF - 240 pF (pin to pin)
(1)
(2)
6V
+0.3 VV
CC
215
°C/W
70
:
0.58
W
1.79
200V
Latch-upLatch-up immunity (all pins)200mA
Lead temperature (soldering, 10 sec)250°C
Output short-circuit to V
1. All voltage values are measured with respect to the ground pin.
2. P
3. Attention must be paid to continuous power dissipation (VDD x 250 mA). Short-circuits can cause
Table 3.Operating conditions
is calculated with T
diss
excessive heating and destructive dissipation. Exposing the IC to a short-circuit for an extended period of
time will dramatically reduce the product’s life expectancy.
= 25 °C, Tj= 150 °C.
amb
or GNDcontinuous
CC
(3)
SymbolParameterValueUnit
V
T
CC
R
oper
Supply voltage2.2 to 5.5V
Load resistor≥16Ω
L
Operating free air temperature range-40 to + 85°C
Load capacitor:
C
L
= 16 to 100 Ω
R
L
RL > 100 Ω
400
100
Standby voltage input:
V
STBY
TS488 active, TS489 in standby
TS488 in standby, TS489 active
1.5 ≤ V≤ V
GND ≤ V
STBY
CC
≤ 0.4
(1)
Thermal resistance junction-to-ambient
R
thja
1. The minimum current consumption (I
temperature range.
2. When mounted on a 4-layer PCB.
MiniSO-8
(2)
DFN8
190
40
) is guaranteed at GND (TS488) or VCC (TS489) for the whole
STBY
pF
V
°C/W
4/32Doc ID 11971 Rev 5
TS488-TS489Electrical characteristics
3 Electrical characteristics
Table 4.Electrical characteristics at VCC=+5 V
with GND = 0 V, T
= 25 °C (unless otherwise specified)
amb
SymbolParameterConditionsMin.Typ. Max.Unit
I
I
STBY
P
THD+N
PSRR
V
SNRSignal-to-noise ratio
Supply currentNo input signal, no load22.7mA
CC
No input signal, V
RL = 32 Ω
= GND for TS488,
STBY
101000
Standby current
Output power
out
Total harmonic distortion
+ noise
Power supply rejection
ratio, inputs grounded
Output swing
O
No input signal, V
STBY=VCC
RL = 32 Ω
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
=-1, RL=32 Ω, P
A
V
out
20 Hz ≤ F ≤ 20 kHz
A
=-1, RL=16 Ω, P
V
out
20 Hz ≤ F ≤ 20 kHz
AV=-1, RL ≥ 16 Ω, Cb=1 µF, F = 1 kHz,
= 200 mVpp
V
ripple
(1)
=-1, RL ≥16 Ω, Cb=1 µF, F = 217 Hz,
A
V
V
= 200 mVpp
ripple
: RL=32 Ω0.230.31
V
OL
V
: RL= 32 Ω4.534.72
OH
: RL=16 Ω0.440.57
V
OL
V
: RL= 16 Ω4.184.48
OH
A-weighted, A
=-1, RL=32 Ω,
V
THD+N < 0.4%, 20 Hz ≤ F ≤ 20 kHz
for TS489,
=60 mW,
=90 mW,
=32 Ω75
L
=32 Ω7080
L
=16 Ω120
L
=16 Ω100130
L
6470
6268
101000
0.3
0.3
105dB
nA
mW
%
dB
V
Crosstalk Channel separation
Input capacitance1pF
C
i
GBPGain bandwidth product R
SR
V
t
1. Guaranteed by design and evaluation.
Slew rate, unity gain
inverting
Input offset voltageV
IO
Wake-up time100ms
wu
R
= 32 Ω, AV=-1
L
F = 1 kHz
F = 20 Hz to 20 kHz
= 32 Ω1.1MHz
L
-102
-84
dB
RL= 16 Ω0.65V/μs
icm=VCC
/2120mV
Doc ID 11971 Rev 55/32
Electrical characteristicsTS488-TS489
Table 5.Electrical characteristics at VCC=+3.3 V
with GND = 0 V, T
= 25 °C (unless otherwise specified)
amb
(1)
SymbolParameterConditionsMin.Typ. Max.Unit
I
I
STBY
P
THD+N
PSRR
V
SNRSignal-to-noise ratio
Supply currentNo input signal, no load1.82.5mA
CC
No input signal, V
RL = 32 Ω
= GND for TS488,
STBY
101000
Standby current
Output power
out
Total harmonic distortion
+ noise
Power supply rejection
ratio, inputs grounded
Output swing
O
No input signal, V
STBY=VCC
RL = 32 Ω
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
=-1, RL=32 Ω, P
A
V
out
20 Hz ≤ F ≤ 20 kHz
=-1, RL=16 Ω, P
A
V
out
20 Hz ≤ F ≤ 20 kHz
AV=-1, RL ≥ 16 Ω, Cb=1 µF, F = 1 kHz,
= 200 mVpp
V
ripple
(2)
=-1, RL ≥16 Ω, Cb=1 µF, F = 217 Hz,
A
V
V
= 200 mVpp
ripple
: RL=32 Ω0.150.2
V
OL
V
: RL=32 Ω3.033.12
OH
: RL=16 Ω0.280.36
V
OL
V
: RL=16 Ω2.822.97
OH
A-weighted, A
=-1, RL=32 Ω,
V
THD+N < 0.4%, 20 Hz ≤F ≤ 20 kHz
for TS489,
= 16 mW,
= 35 mW,
=32 Ω34
L
=32 Ω3035
L
=16 Ω55
L
=16 Ω4757
L
6369
6167
101000
0.3
0.3
102dB
nA
mW
%
dB
V
R
=32 Ω, AV=-1
Crosstalk Channel separation
L
F = 1 kHz
F = 20 Hz to 20 kHz
Input capacitance1pF
C
i
GBPGain bandwidth product R
SR
V
t
1. All electrical values are guaranteed with correlation measurements at 2.5 V and 5 V.
2. Guaranteed by design and evaluation.
Slew rate, unity gain
inverting
Input offset voltageV
IO
Wake-up time100ms
wu
=32 Ω1.1MHz
L
RL=16 Ω0.6V/μs
icm=VCC
/2120mV
6/32Doc ID 11971 Rev 5
-102
-84
dB
TS488-TS489Electrical characteristics
Table 6.Electrical characteristics at VCC=+2.5 V
with GND = 0 V, T
SymbolParameterConditionsMin.Typ. Max.Unit
= 25 °C (unless otherwise specified)
amb
I
I
STBY
P
THD+N
PSRR
V
Supply currentNo input signal, no load1.82.5mA
CC
Standby current
Output power
out
Total harmonic distortion
+ noise
Power supply rejection
ratio, inputs grounded
Output swing
O
SNRSignal-to-noise ratio
Crosstalk Channel separation
No input signal, V
= GND for TS488,
STBY
RL = 32 Ω
No input signal, V
= 32 Ω
R
L
STBY=VCC
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
THD+N = 0.1% max, F = 1 kHz, R
THD+N = 1% max, F = 1 kHz, R
A
= -1, RL=32 Ω, P
V
= 10 mW,
out
20 Hz ≤ F ≤ 20 kHz
=-1, RL=16 Ω, P
A
V
= 16 mW,
out
20 Hz ≤ F ≤ 20 kHz
AV = -1, RL ≥ 16 Ω, Cb=1 µF, F = 1 kHz,
V
= 200 mVpp
ripple
(1)
A
= -1, RL ≥16 Ω, Cb=1 µF, F = 217 Hz,
V
V
= 200 mVpp
ripple
: RL=32 Ω0.120.16
V
OL
V
: RL=32 Ω2.32.36
OH
: RL=16 Ω0.220.28
V
OL
: RL=16 Ω2.152.25
V
OH
A-weighted, A
= -1, RL=32 Ω,
V
THD+N < 0.4%, 20 Hz ≤ F ≤ 20 kHz
=32 Ω, AV = -1
R
L
F = 1 kHz
F = 20 Hz to 20 kHz
for TS489,
=32 Ω19
L
=32 Ω1820
L
=16 Ω31
L
=16 Ω2732
L
101000
101000
mW
0.3
0.3
68
66
100dB
-102
-84
nA
%
dB
V
dB
Input capacitance1pF
C
i
GBPGain bandwidth product R
SR
V
t
1. Guaranteed by design and evaluation.
Slew rate, unity gain
inverting
Input offset voltageV
IO
Wake-up time100ms
wu
=32 Ω1.1MHz
L
=16 Ω0.6V/μs
R
L
= VCC/2120mV
icm
Doc ID 11971 Rev 57/32
Electrical characteristicsTS488-TS489
Table 7.Index of graphics
DescriptionFigure
Open-loop frequency responseFigure 2 to Figure 11
Power derating curvesFigure 12 to Figure 13
Signal-to-noise ratio vs. power supply voltageFigure 14 to Figure 19
Power dissipation vs. output power per channelFigure 20 to Figure 22
Power supply rejection ratio vs. frequencyFigure 23 to Figure 25
Total harmonic distortion plus noise vs. output powerFigure 26 to Figure 43
Total harmonic distortion plus noise vs. frequencyFigure 44 to Figure 52
Output power vs. load resistanceFigure 53 to Figure 55
Output power vs. power supply voltageFigure 56, Figure 57
Output voltage swing vs. power supply voltageFigure 58
Current consumption vs. power supply voltageFigure 59
Current consumption vs. standby voltageFigure 60 to Figure 65
Crosstalk vs. frequencyFigure 66 to Figure 77
8/32Doc ID 11971 Rev 5
TS488-TS489Electrical characteristics
Figure 2.Open-loop frequency responseFigure 3.Open-loop frequency response
Gain (dB)
125
100
-25
-50
-75
Ω
=25°C
225
180
135
90
45
0
Vcc=2.5V
RL=16
gain
T
75
AMB
50
25
0
phase
-45
-90
0
10
2
10
4
10
6
10
-135
8
10
Frequency (Hz)
125
100
75
gain
Vcc=5V
RL=16
T
AMB
50
25
Gain (dB)
Phase (°)
0
phase
-25
-50
-75
0
10
2
10
4
10
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Frequency (Hz)
Figure 4.Open-loop frequency responseFigure 5.Open-loop frequency response
125
100
75
gain
Vcc=2.5V
RL=16
CL=400pF
T
AMB
50
25
Gain (dB)
0
phase
-25
-50
-75
0
10
2
10
4
10
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Frequency (Hz)
125
100
75
gain
Vcc=5V
RL=16
CL=400pF
T
AMB
50
25
Gain (dB)
Phase (°)
0
phase
-25
-50
-75
0
10
2
10
4
10
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Frequency (Hz)
Phase (°)
Phase (°)
Figure 6.Open-loop frequency responseFigure 7.Open-loop frequency response
125
100
75
gain
Vcc=2.5V
RL=32
T
AMB
50
25
Gain (dB)
0
phase
-25
-50
-75
0
10
2
10
4
10
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Frequency (Hz)
Doc ID 11971 Rev 59/32
125
100
75
gain
Vcc=5V
RL=32
T
AMB
50
25
Gain (dB)
Phase (°)
0
phase
-25
-50
-75
0
10
2
10
4
10
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Frequency (Hz)
Phase (°)
Electrical characteristicsTS488-TS489
Figure 8.Open-loop frequency responseFigure 9.Open-loop frequency response
125
100
75
gain
Vcc=2.5V
RL=32
CL=400pF
T
AMB
50
25
Gain (dB)
0
phase
-25
-50
-75
0
10
2
10
4
10
Frequency (Hz)
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
125
100
75
gain
Vcc=5V
RL=32
CL=400pF
T
AMB
50
25
Gain (dB)
Phase (°)
0
phase
-25
-50
-75
0
10
2
10
4
10
Frequency (Hz)
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
Figure 10. Open-loop frequency responseFigure 11. Open-loop frequency response
125
100
75
gain
Vcc=2.5V
RL=600
T
AMB
50
25
Gain (dB)
0
phase
-25
-50
-75
0
10
2
10
4
10
Frequency (Hz)
6
10
Ω
=25°C
225
180
135
90
45
0
-45
-90
-135
8
10
125
100
75
gain
Vcc=5V
RL=600
T
AMB
50
25
Gain (dB)
Phase (°)
0
phase
-25
-50
-75
0
10
2
10
4
10
Frequency (Hz)
6
10
=25°C
225
180
Ω
135
90
45
0
-45
-90
-135
8
10
Phase (°)
Phase (°)
Figure 12. Power derating curvesFigure 13. Power derating curves
0.8
0.6
4-layer PCB
0.4
0.2
No Heat sink
Package Power Dissipation (W)
0.0
0255075100125150
Ambiant Temperature (°C)
10/32Doc ID 11971 Rev 5
MiniSO8
3
4-layer PCB
2
1
Package Power Dissipation (W)
0
0255075100125150
Ambiant Temperature (°C)
DFN8
No heatsink
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