TS4851
Mono 1W Speaker and Stereo 160mW Headset
BTL Drivers with Digital Volume Control
■
■
■
■
■
■
■
■
■
■
■
■
■
Operating from VCC = 3V to 5.5V
Rail to rail input/output
Speaker driver with 1 W output @ Vcc = 5V,
THD+N = 1%, F = 1kHz, 8Ω load
Headset drivers with 160 mW output @
Vcc = 5V, THD+N = 1%, F = 1kHz, 32Ω load
Headset output is 30mW in stereo @
Vcc = 3V
THD+N < 0.5% Max @ 20mW into 32Ω BTL,
50Hz < Frequency < 20kHz
32-step digital volume control from 34.5dB to +12dB
+6dB power up volume and full standby
8 different output modes
Pop & click reduction circuitry
Low shutdown current (< 100nA)
Thermal shutdown protection
Flip-chip package 18 x 300µm bumps
Pin Connections (top view)
TS485IJT - Flip-chip
TS485EIJT - Lead free Flip-chip
)
s
(
ct
u
d
o
r
P
e
t
e
l
o
)-
s
b
O
Pin Out (top view)
s
(
t
c
Description
u
d
o
The TS4851 is a low power audio amplifier that
can drive either both a mono speaker or a stereo
headset. To the speaker, it can deliver 400 mW
(typ.) of continuous RMS output power into an 8Ω
load with a 1% THD+N value. To the headset
driver, the amplifier can deliver 30 mW (typ.) per
channel of continuous average power into a
stereo 32 Ω bridged-tied load with 0.5% THD+N
@ 3.3V.
R
OUT<
-
r
P
e
R
IN
t
e
l
o
L
OUT +
VCC
L
IN
PHONE
IN
s
b
O
L
OUT -
GND
R
OUT +
DATA
NC
VCC
BYPASS
ENB
SPKR
OUT -
SPKR
OUT+
GND
CLK
This device features a 32-step digital volume
control and 8 different output selections. The
digital volume and output modes are controlled
through a three-digit SPI interface bus.
Applications
■
Mobile Phones
Order Codes
Part Number
TS4851IJT
TS4851EIJT
Temperature Range
Package
Packaging
Marking
-40, +85°C
Flip-Chip
Lead free Flip-Chip
Tape & Reel
A51
A51
J = Flip Chip Package - only available in Tape & Reel (JT))
March 2005
Revision 5
1/28
TS4851
Application Information
1 Application Information
Figure 1: Application information for a typical application
)
s
(
ct
u
d
o
r
P
e
t
e
l
o
)
(s
s
b
O
t
c
u
d
o
r
P
e
t
e
l
o
s
b
O
Table 1. External component description
Component
Functional Description
Cin
Cs
This is the input coupling capacitor. It blocks the DC voltage at, and couples the input signal to the
amplifier’s input terminals. Cin also creates a highpass filter with the internal input impedance Zin at Fc
=1/ (2πi x Zin x Cin).
This is the Supply Bypass capacitor. It provides power supply filtering.
CB
This is the Bypass pin capacitor. It provides half-supply filtering.
2/28
SPI Bus Interface
TS4851
2 SPI Bus Interface
Table 2. Pin description
Pin
Functional Description
DATA
CLK
ENB
This is the serial data input pin.
This is the clock input pin.
This is the SPI enable pin active at high level.
2.1 Description of SPI operation
The serial data bits are organized into a field containing 8 bits of data as shown in Table 3. The DATA 0 to
DATA 2 bits determine the output mode of the TS4851 as shown in Table 2. The DATA 3 to DATA 7 bits
determine the gain level setting as illustrated by Table 3. For each SPI transfer, the data bits are written to
the DATA pin with the least significant bit (LSB) first. All serial data are sampled at the rising edge of the
CLK signal. Once all the data bits have been sampled, ENB transitions from logic-high to logic low to
complete the SPI sequence. All 8 bits must be received before any data latch can occur. Any excess CLK
and DATA transitions will be ignored after the height rising clock edge has occurred. For any data
sequence longer than 8 bits, only the first 8 bits will get loaded into the shift register and the rest of the bits
will be disregarded.
)
s
(
ct
u
d
o
r
P
e
t
e
l
o
Table 3. Bit allocation
bs
DATA
LSB
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
O
)
s
(
t
c
u
d
o
MSB
r
P
e
MODES
Mode 1
Mode 2
Mode 3
gain 1
gain 2
gain 3
gain 4
gain 5
Table 4. Output mode selection: G from -34.5dB to +12dB (by steps of 1.5dB)
Output
Mode #
0
1
2
3
4
5
O
6
7
1)
DATA 1
DATA 0
SPKERout1
Rout
Lout
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
SD
6dBxP
SD
Gx(R+L)
SD
Gx(R+L)
SD
SD
0dBxP
SD
GxR
SD
SD
SD
0dBxP
SD
GxL
SD
1
1
1
1
0
1
+6dBxP
SD
6dBxP
GxR+0dBxP
GxR+0dBxP
GxL+0dBxP
GxL+0dBxP
bs
t
e
l
o
DATA 2
SD = Shutdown Mode, P = Phone in Input, R = Rin input and L = Lin input
3/28
TS4851
SPI Bus Interface
Table 5. Volume control settings
K : Gain (dB)
DATA 7
DATA 6
DATA 5
DATA 4
DATA 3
-34.5
-33.0
-31.5
-30.0
-28.5
-27.0
-25.5
-24.0
-22.5
-21.0
-19.5
-18.0
-16.5
-15.0
-13.5
-12.0
-10.5
-9.0
-7.5
-6.0
-4.5
-3.0
-1.5
0.0
1.5
3.0
4.5
6
7.5
9
10.5
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
s
b
O
t
e
l
o
4/28
P
e
d
o
r
t
c
u
)
(s
s
b
O
t
e
l
o
r
P
e
u
d
o
)
s
(
ct
SPI Bus Interface
TS4851
Figure 2: SPI timing diagram
)
s
(
ct
u
d
o
r
P
e
t
e
l
o
)
(s
s
b
O
t
c
u
d
o
r
P
e
t
e
l
o
s
b
O
5/28
TS4851
Absolute Maximum Ratings
3 Absolute Maximum Ratings
Table 6. Key parameters and their absolute maximum ratings
Symbol
VCC
Parameter
6
V
Toper
-40 to + 85
°C
Tstg
Storage Temperature
-65 to +150
°C
Tj
Pd
ESD
ESD
Maximum Junction Temperature
2
Flip Chip Thermal Resistance Junction to Ambient
Power Dissipation
Human Body Model
Machine Model
Latch-up Immunity
Lead Temperature (soldering, 10sec)
Lead Temperature (soldering, 10sec) for Lead-Free version
2)
Device is protected in case of over temperature by a thermal shutdown active @ 150°C
VCC
Vphin
Supply Voltage
Maximum Phone In Input Voltage
VRin/VLin
Maximum Rin & Lin Input Voltage
TSD
Rthja
Thermal Shut Down Temperature
)
(s
t
c
u
s
b
O
Flip Chip Thermal Resistance Junction to Ambient1
d
o
r
Device is protected in case of over temperature by a thermal shutdown active @ 150°C
P
e
t
e
l
o
s
b
O
°C/W
)
s
(
ct
kV
V
mA
°C
r
P
e
t
e
l
o
Table 7. Operating conditions
Parameter
°C
200
u
d
o
All voltages values are measured with respect to the ground pin.
Symbol
150
Internally Limited
2
100
200
250
260
1)
6/28
Unit
Supply voltage1
Operating Free Air Temperature Range
Rthja
1)
Value
Value
Unit
3 to 5.5
GND to VCC
V
V
GND to VCC
V
150
90
°C
°C/W
Electrical Characteristics
TS4851
4 Electrical Characteristics
Table 8. Electrical characteristics at VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise
specified)
Symbol
ICC
ISTANDBY
Voo
Vil
Vih
Po
THD + N
SNR
PSRR
Parameter
Min.
Supply Current
Output Mode 7, Vin = 0V, no load
All other output modes, Vin = 0V, no load
Standby Current
Output Mode 0
Output Offset Voltage (differential)
Vin = 0V
“Logic low” input Voltage
“Logic high” input Voltage
Output Power
SPKERout, RL = 8Ω, THD = 1%, F = 1kHz
Rout & Lout, RL = 32Ω, THD = 0.5%, F = 1kHz
Total Harmonic Distortion + Noise
Rout & Lout, Po = 80mW, F = 1kHz, RL = 32Ω
SPKERout, Po = 800mW, F = 1kHz, RL = 8Ω
Rout & Lout, Po = 50mW, 20Hz < F < 20kHz, RL = 32Ω
SPKERout, Po = 40mW, 20Hz < F < 20kHz, RL = 8Ω
Signal To Noise Ratio (A-Weighted)
)
(s
G
t
c
u
d
o
r
P
e
s
b
O
t
e
l
o
Zin
Zin
tes
teh
tel
tds
tdh
tcs
tch
tcl
fclk
1)
Max.
8
4.5
11
6.5
0.1
2
5
50
0.4
5
Unit
mA
µA
mV
0
1.4
800
80
ete
ol
s
b
O
Power Supply Rejection Ratio1
Vripple = 200mV Vpp, F = 217Hz, Input(s) Terminated 10Ω
Ouput Mode 1
Ouput Mode 2
Ouput Mode 3 (G=+12dB)
Ouput Mode 4 (G=+12dB)
Ouput Mode 5 (G=+12dB)
Ouput Mode 6, 7 (G=+12dB)
Digital Gain Range - Rin & Lin
no load
Digital gain stepsize
Stepsize
G ≥ -22.5dB
G < -22.5dB
Phone In Gain, no load
BTL gain from Phone In to SPKERout
BTL gain from Phone In to Rout & Lout
Phone In Input Impedance
Rin & Lin Input Impedance (all gain setting)
Enable Stepup Time - ENB
Enable Hold Time - ENB
Enable Low Time - ENB
Data Setup Time- DATA
Data Hold Time - DATA
Clock Setup time - CLK
Clock Logic High Time - CLK
Clock Logic Low Time - CLK
Clock Frequency - CLK
Typ.
1000
120
u
d
o
)
s
(
ct
Pr
V
V
mW
%
0.5
1
0.5
1
90
dB
dB
70
70
55
57
52
56
dB
-34.5
+12
1.5
-0.5
-1
dB
dB
+0.5
+1
dB
15
37.5
20
20
30
20
20
20
50
50
DC
6
0
20
50
25
62.5
10
kΩ
kΩ
ns
ns
ns
ns
ns
ns
ns
ns
MHz
Dynamic measurements [20 x log(rms(Vout)/rms(Vripple)]. Vripple is the superimposed sinus signal to Vcc @ F = 217Hz
7/28
TS4851
Electrical Characteristics
Table 9. Electrical characteristics at VCC = +3V, GND = 0V, Tamb = 25°C (unless otherwise
specified)
Symbol
ICC
ISTANDBY
Voo
Vil
Vih
Po
THD + N
SNR
PSRR1
G
Parameter
Min.
Supply Current
Output Mode 7, Vin = 0V,no load
All other output modes, Vin = 0V,no load
Standby Current
Output Mode 0
Output Offset Voltage (differential)
Vin = 0V
“Logic low” input Voltage
“Logic high” input Voltage
Output Power
SPKERout, RL = 8Ω, THD = 1%, F = 1kHz
Rout & Lout, RL = 32Ω, THD = 0.5%, F = 1kHz
Total Harmonic Distortion + Noise
Rout & Lout, Po = 20mW, F = 1kHz, RL = 32Ω
SPKERout, Po = 300mW, F = 1kHz, RL = 8Ω
Rout & Lout, Po = 15mW, 20Hz < F < 20kHz, RL = 32Ω
SPKERout, Po = 250mW, 20Hz < F < 20kHz, RL = 8Ω
Signal To Noise Ratio (A-Weighted)
Ratio2
Power Supply Rejection
Vripple = 200mV Vpp, F = 217Hz, Input(s) Terminated 10Ω
Ouput Mode 1
Ouput Mode 2
Ouput Mode 3 (G=+12dB)
Ouput Mode 4 (G=+12dB)
Ouput Mode 5 (G=+12dB)
Ouput Mode 6, 7 (G=+12dB)
Digital Gain Range - Rin & Lin
no load
Digital gain stepsize
Stepsize error
G ≥ -22.5dB
G < -22.5dB
Phone In Gain, no load
BTL gain from Phone In to SPKERout
BTL gain from Phone In to Rout & Lout
e
t
e
ol
o
r
P
Zin
Phone In Input Impedance 1
Zin
Rin & Lin Input Impedance (All Gain Setting) 1
Enable Stepup Time - ENB
Enable Hold Time - ENB
Enable Low Time - ENB
Data Setup Time- DATA
Data Hold Time - DATA
Clock Setup time - CLK
Clock Logic High Time - CLK
Clock Logic Low Time - CLK
Clock Frequency - CLK
s
b
O
tes
teh
tel
tds
tdh
tcs
tch
tcl
fclk
7.5
4.5
10
6.5
0.1
2
5
50
0.4
5
mV
0
1.4
300
20
340
30
e
t
e
l
o
r
P
0.5
1
86
V
V
mW
)
s
(
ct
du
0.5
1
%
dB
dB
65
70
54
54
51
53
dB
-34.5
1.5
-0.5
-1
+12
dB
dB
+0.5
+1
dB
15
6
0
20
25
kΩ
37.5
50
62.5
kΩ
10
ns
ns
ns
ns
ns
ns
ns
ns
MHz
20
20
30
20
20
20
50
50
DC
1)
All PSRR data limits are guaranted by evaluation desgin test.
2)
Dynamic measurements [20 x log(rms(Vout)/rms(Vripple)]. Vripple is the superimposed sinus signal to Vcc @ F = 217Hz
8/28
Unit
µA
O
)
du
Max.
mA
o
s
b
s
(
t
c
Typ.
Electrical Characteristics
TS4851
Table 10. Index of graphics
Description
THD + N vs. Output Power
THD + N vs. Frequency
Output Power vs. Power Supply Voltage
PSRR vs. Frequency
Frequency Response
Signal to Noise Ratio vs. Power Supply Voltage
Crosstalk vs. Frequency
-3 dB Lower Cut Off Frequency vs. Input Capacitor
Current Consumption vs. Power Supply Voltage
Power Dissipation vs. Output Power
Power Derating Curves
-3 dB Lower Cut Off Frequency vs. Gain Setting
Figure
Page
Figures 3 to 12
Figures 13 to 22
Figures 23 to 30
Figures 31 to 40
Figures 41 to 44
Figures 45 to 48
Figures 49 to 50
Figures 51 to 52
Figure 53
Figures 54 to 57
Figure 58
Figure 59
page 10 to page 11
page 11 to page 13
page 13 to page 14
page 14 to page 16
page 16
page 17
page 18
page 18
page 18
page 18 to page 19
page 19
page 19
)
s
(
ct
u
d
o
Note: In the graphs that follow, the abbreviations Spkout = Speaker Output, and HDout = Headphone Output are used.
All measurements made with Cin = 220nF, Cb = Cs = 1µF except in PSRR condition where Cs = 0.
r
P
e
t
e
l
o
)
(s
s
b
O
t
c
u
d
o
r
P
e
t
e
l
o
s
b
O
9/28
TS4851
Electrical Characteristics
Figure 6: HDout THD+N vs. output power
(output mode 2)
Figure 3: Spkout THD+N vs. output power
(output modes 1, 7)
10
10
RL = 4Ω
Output mode 1, 7
BW < 125 kHz
Tamb = 25°C
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
1
THD + N (%)
THD + N (%)
1
0.1
RL = 16Ω
Output mode 2
BW < 125 kHz
Tamb = 25°C
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
0.1
Vcc=3V
F=1kHz
Vcc=3V
F=1kHz
0.01
1E-3
0.01
Vcc=5V
F=1kHz
0.1
1
1E-3
0.01
Output power (W)
r
P
e
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
)-
s
(
t
c
0.1
Vcc=3V
F=1kHz
1E-3
u
d
o
r
P
e
0.01
0.1
RL = 32Ω
Output mode 2
BW < 125 kHz
Tamb = 25°C
s
b
O
1
THD + N (%)
THD + N (%)
t
e
l
o
10
0.01
0.1
Vcc=3V
F=1kHz
Vcc=5V
F=1kHz
Vcc=5V
F=1kHz
0.01
1
1E-3
0.01
t
e
l
o
Figure 8: Spkout THD+N vs. output power
(output mode 3, G=+12dB)
10
Vcc=3V
F=20kHz
0.1
Vcc=3V
F=1kHz
Vcc=5V
F=1kHz
0.01
0.01
0.1
Output power (W)
10/28
RL = 4Ω
Out. mode 3; G = +12dB
BW < 125 kHz
Tamb = 25°C
Vcc=5V
F=20kHz
THD + N (%)
THD + N (%)
10
RL = 16Ω
Output mode 1, 7
BW < 125 kHz
Tamb = 25°C
1E-3
0.1
Output power (W)
Figure 5: Spkout THD+N vs. output power
(output modes 1, 7)
1
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
Output power (W)
s
b
O
u
d
o
Figure 7: HDout THD+N vs. output power
(output mode 2)
10
1
0.1
Output power (W)
Figure 4: Spkout THD+N vs. output power
(output modes 1, 7)
RL = 8Ω
Output mode 1, 7
BW < 125 kHz
Tamb = 25°C
)
s
(
ct
Vcc=5V
F=1kHz
0.01
1
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
1
0.1
1E-3
Vcc=3V
F=1kHz
Vcc=5V
F=1kHz
0.01
0.1
Output power (W)
1
Electrical Characteristics
TS4851
Figure 12: HDout THD+N vs. output power
(output mode 4, G=+12dB)
Figure 9: Spkout THD+N vs. output power
(output mode 3, G=+12dB)
10
10
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
1
1
THD + N (%)
THD + N (%)
RL = 8Ω
Out. mode 3; G = +12dB
BW < 125 kHz
Tamb = 25°C
RL = 32Ω
Output mode 4
G = +12dB
BW < 125 kHz
Tamb = 25°C
0.1
1E-3
0.01
0.1
0.01
1E-3
1
0.01
Output power (W)
10
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
Vcc=3V
F=1kHz
0.1
Vcc=5V
F=1kHz
0.01
1E-3
0.01
e
t
e
ol
)-
s
(
t
c
u
d
o
Pr
0.1
t
e
l
o
RL = 4Ω
Output mode 1, 7
BW < 125kHz
Tamb = 25°C
s
b
O
1
Vcc=3V
P=400mW
0.01
1
100
1000
10000
Frequency (Hz)
Figure 11: HDout THD+N vs. output power
(output mode 4, G=+12dB)
Figure 14: Spkout THD+N vs. frequency
(output modes 1, 7)
10
10
RL = 8Ω
Output mode 1, 7
BW < 125kHz
Tamb = 25°C
Vcc=5V
F=20kHz
Vcc=3V
F=20kHz
1
THD + N (%)
RL = 16Ω
Output mode 4
G = +12dB
BW < 125 kHz
Tamb = 25°C
Vcc=5V
P=1.1W
0.1
Output power (W)
s
b
O
u
d
o
r
P
e
THD + N (%)
THD + N (%)
)
s
(
ct
Figure 13: Spkout THD+N vs. frequency
(output modes 1, 7)
10
RL = 16Ω
Output mode 3
G = +12dB
BW < 125 kHz
Tamb = 25°C
0.1
Output power (W)
Figure 10: Spkout THD+N vs. output power
(output mode 3, G=+12dB)
THD + N (%)
Vcc=5V
F=1kHz
Vcc=5V
F=1kHz
Vcc=3V
F=1kHz
1
Vcc=3V
F=20kHz
Vcc=3V
F=1kHz
0.1
1
Vcc=5V
F=20kHz
0.1
Vcc=3V
P=320mW
Vcc=5V
P=800mW
0.1
Vcc=3V
F=1kHz
Vcc=5V
F=1kHz
0.01
1E-3
0.01
Output power (W)
0.1
0.01
100
1000
10000
Frequency (Hz)
11/28
TS4851
Electrical Characteristics
Figure 18: Spkout THD+N vs.frequency
(output mode 3, G = +12 dB)
Figure 15: Spkout THD+N vs. frequency
(output modes 1, 7)
10
10
RL = 16Ω
Output mode 1, 7
BW < 125kHz
Tamb = 25°C
RL = 4Ω
Output mode 3
G = +12dB
BW < 125kHz
Tamb = 25°C
Vcc=3V
P=150mW
Vcc=5V
P=550mW
THD + N (%)
THD + N (%)
1
0.1
Vcc=5V
P=1.1W
1
Vcc=3V
P=400mW
)
s
(
ct
0.1
0.01
100
1000
10000
100
)-
1
Vcc=5V
P=220mW
s
(
t
c
0.1
u
d
o
r
P
e
1000
s
b
O
RL = 8Ω
Output mode 3
G = +12dB
BW < 125kHz
Tamb = 25°C
THD + N (%)
RL = 16Ω
Output mode 2
BW < 125kHz
Tamb = 25°C
THD + N (%)
t
e
l
o
10
100
1
Vcc=3V
P=320mW
10000
100
t
e
l
o
s
b
O
10000
Figure 20: Spkout THD+N vs. frequency
(output mode 3, G = +12 dB)
10
10
RL = 32Ω
Output mode 2
BW < 125kHz
Tamb = 25°C
RL = 16Ω
Output mode 3
G = +12dB
BW < 125kHz
1 Tamb = 25°C
Vcc=3V
P=20mW
THD + N (%)
1
THD + N (%)
1000
Frequency (Hz)
Figure 17: HDout THD+N vs. frequency
(output mode 2)
Vcc=5V
P=140mW
0.1
100
1000
Frequency (Hz)
12/28
Vcc=5V
P=800mW
0.1
Frequency (Hz)
0.01
u
d
o
r
P
e
10
0.01
10000
Figure 19: Spkout THD+N vs. frequency
(output mode 3, G = +12 dB)
Figure 16: HDout THD+N vs. frequency
(output mode 2)
Vcc=3V
P=40mW
1000
Frequency (Hz)
Frequency (Hz)
10000
0.1
0.01
Vcc=3V
P=180mW
Vcc=5V
P=550mW
100
1000
Frequency (Hz)
10000
Electrical Characteristics
TS4851
Figure 24: Speaker output power vs. power
supply voltage (output mode 1, 7)
Figure 21: HDout THD+N vs. frequency
(output mode 4, G = +12 dB)
2.4
THD + N (%)
RL = 16Ω
Output mode 4
G = +12dB
BW < 125kHz
1 Tamb = 25°C
Output power at 10% THD + N (W)
10
Vcc=3V
P=40mW
Vcc=5V
P=220mW
0.1
0.01
100
1000
F = 1kHz
Output mode 1, 7
2.0 BW < 125kHz
Tamb = 25°C
4Ω
1.6
8Ω
1.2
16Ω
0.8
32Ω
0.0
3.0
10000
3.5
4.0
Frequency (Hz)
t
e
l
o
)-
s
(
t
c
Vcc=5V
P=140mW
Pr
1000
e
t
e
ol
u
d
o
F = 1kHz
Output mode 2
BW < 125kHz
Tamb = 25°C
s
b
O
Output power at 1% THD + N (W)
THD + N (%)
Vcc=3V
P=20mW
100
0.30
0.25
32Ω
0.15
64Ω
0.10
0.05
0.00
3.0
10000
3.5
4.0
s
b
O
5.0
5.5
Figure 26: Headphone output power vs. load
resistor (output mode 2)
0.40
2.0
F = 1kHz
Output mode 1, 7
BW < 125kHz
Tamb = 25°C
F = 1kHz
Output power at 10% THD + N (W)
Output power at 1% THD + N (W)
4.5
Vcc (V)
Figure 23: Speaker output power vs. power
supply voltage (output mode 1, 7)
4Ω
1.2
8Ω
16Ω
0.8
32Ω
0.4
0.0
3.0
16Ω
0.20
Frequency (Hz)
1.6
u
d
o
5.5
r
P
e
0.35
0.01
5.0
Figure 25: Headphone output power vs. load
resistor (output mode 2)
10
0.1
4.5
Vcc (V)
Figure 22: HDout THD+N vs. frequency
(output mode 4, G = +12 dB)
RL = 32Ω
Output mode 4
G = +12dB
BW < 125kHz
1 Tamb = 25°C
)
s
(
ct
0.4
3.5
4.0
4.5
Vcc (V)
5.0
5.5
0.35 Output mode 2
0.30
16Ω
BW < 125kHz
Tamb = 25°C
32Ω
0.25
0.20
64Ω
0.15
0.10
0.05
0.00
3.0
3.5
4.0
4.5
5.0
5.5
Vcc (V)
13/28
TS4851
Electrical Characteristics
Figure 30: Headphone output power vs. load
resistance (output mode 2)
Figure 27: Speaker output power vs. power
supply voltage (output mode 3)
0.40
2.0
Output power at 1% THD + N (W)
Output power at 10% THD + N (W)
F = 1kHz
F = 1kHz
Output mode 3
1.6 BW < 125kHz
Tamb = 25°C
4Ω
1.2
8Ω
16Ω
0.8
32Ω
0.4
0.0
3.0
3.5
4.0
4.5
5.0
0.35 Output mode 4
32Ω
0.25
0.20
0.15
0.10
64Ω
3.5
4.0
Vcc (V)
8Ω
1.2
0.8
32Ω
ct
du
3.5
4.0
o
r
P
4.5
e
t
e
ol
5.0
PSRR (dB)
Output power at 10% THD + N (W)
)
(s
1.6
0.0
3.0
t
e
l
o
s
b
O
Output mode 1, 7
-10 RL = 8Ω
Vripple = 0.2Vpp
-20
Tamb = 25°C
-30
4Ω
0.4
-40
Vcc=3V
-50
Vcc=5V
-60
-70
-80
-90
5.5
100
Vcc (V)
Figure 29: Headphone output power vs. load
resistor (output mode 4)
s
b
O
16Ω
-10
-20
32Ω
0.20
0.15
0.10
-30
-40
Vcc = 3V & 5V
-50
-60
-70
3.5
4.0
4.5
Vcc (V)
14/28
Output mode 2
RL = 32Ω
Vripple = 0.2Vpp
Tamb = 25°C
64Ω
0.05
0.00
3.0
100000
0
F = 1kHz
Output mode 4
BW < 125kHz
Tamb = 25°C
PSRR (dB)
Output power at 1% THD + N (W)
0.25
1000
10000
Frequency (Hz)
Figure 32: HDout PSRR vs. frequency
(output mode 2, input grounded)
0.35
0.30
u
d
o
5.5
r
P
e
0
16Ω
5.0
Figure 31: Spkout PSRR vs. frequency
(output modes 1, 7, input grounded)
2.4
2.0
4.5
Vcc (V)
Figure 28: Speaker output power vs. power
supply voltage (output mode 3)
F = 1kHz
Output mode 3
BW < 125kHz
Tamb = 25°C
)
s
(
ct
0.05
0.00
3.0
5.5
16Ω
BW < 125kHz
0.30 Tamb = 25°C
5.0
5.5
-80
100
1000
10000
Frequency (Hz)
100000
Electrical Characteristics
TS4851
Figure 36: HDout PSRR vs. frequency
(output mode 4, inputs grounded)
Figure 33: Spkout PSRR vs. frequency
(output mode 3, inputs grounded)
0
0
Output mode 4
-10 Vcc = +3V
RL = 32 Ω
-20 Vripple=0.2Vpp
Tamb = 25°C
G=+12dB
-30
G=+6dB
-40
PSRR (Hz)
-20
G=+9dB
-50
Output mode 3
Vcc = +5V
RL = 8Ω
Vripple = 0.2Vpp
Tamb = 25 °
-60
-70
G=-12dB
-80
G=-34.5dB
-90
G=0dB
1000
10000
Frequency (Hz)
PSRR (dB)
-30
100000
Output mode 3
Vcc = +3V
RL = 8Ω
Vripple=0.2Vpp
Tamb = 25°C
)
(s
G=+6dB
t
c
u
G=-34.5dB
od
G=-12dB
-70
G=0dB
100
Pr
1000
10000
Frequency (Hz)
e
t
e
ol
s
b
O
-20
-70
G=+12dB
G=+9dB
G=-12dB
G=0dB
G=-34.5dB
100
1000
10000
Frequency (Hz)
100000
Figure 38: Spkout PSRR vs. frequency
(output mode 5, inputs grounded)
-20
G=+6dB
PSRR (Hz)
PSRR (dB)
-40
G=+6dB
-60
G=+12dB
G=-12dB
G=0dB
-60
1000
10000
Frequency (Hz)
Output mode 5
Vcc = +3V
RL = 8Ω
Vripple=0.2Vpp
Tamb = 25°C
-30
100000
G=+6dB
G=+12dB
G=+9dB
-40
G=-12dB
G=0dB
-50
G=-34.5dB
-60
G=-34.5dB
100
-30
-10
G=+9dB
-70
Output mode 5
Vcc = +5V
RL = 8Ω
Vripple=0.2Vpp
Tamb = 25°C
0
Output mode 4
Vcc = +5V
RL = 32Ω
Vripple=0.2Vpp
Tamb = 25°C
-50
-80
t
e
l
o
-50
0
-40
u
d
o
s
b
O
100000
Figure 35: HDout PSRR vs. frequency
(output mode 4, inputs grounded)
-30
)
s
(
ct
100000
r
P
e
G=+12dB
-60
1000
10000
Frequency (Hz)
Figure 37: Spkout PSRR vs. frequency
(output mode 5, inputs grounded)
-10
G=+9dB
-20
100
0
-50
-10
G=-12dB
G=-34.5dB
-40
-80
-40
G=0dB
0
-20
G=+9dB
-60
Figure 34: Spkout PSRR vs. frequency
(output mode 3, inputs grounded)
-10
G=+12dB
-30
-70
100
G=+6dB
-50
PSRR (Hz)
PSRR (dB)
-10
-70
100
1000
10000
Frequency (Hz)
100000
15/28
TS4851
Electrical Characteristics
Figure 39: HDout PSRR vs. frequency (output
modes 6, 7, inputs grounded)
Figure 42: HDout frequency response
(output mode 2)
0
Output mode 6, 7
-10 Vcc = +5V
RL = 32Ω
-20 Vripple=0.2Vpp
Tamb = 25°C
-30
G=+6dB
G=+12dB
G=+9dB
-40
Vcc=3V
Vcc=5V
-2
Output level (dB)
PSRR (Hz)
0
G=-12dB
-50
-4
Output mode 2
RL = 32Ω
Cin = 220 nF
BW < 125 kHz
Tamb = 25°C
G=0dB
-6
-60
G=-34.5dB
-70
100
1000
10000
100000
20
100
Frequency (Hz)
r
P
e
Figure 43: Spkout frequency response
(output mode 3)
G=+12dB
-30
)
(s
G=+9dB
G=-12dB
-40
-50
s
b
O
10
G=+6dB
ct
u
d
o
Output level (dB)
-20
PSRR (Hz)
t
e
l
o
12
0
Output mode 6, 7
Vcc = +3V
RL = 32Ω
Vripple=0.2Vpp
Tamb = 25°C
Vcc=5V
Vcc=3V
8
6
Output mode 3
RL = 8Ω
G = +12dB
Cin = 220 nF
BW < 125 kHz
Tamb = 25°C
4
G=0dB
-60
-70
100
Pr
e
t
e
ol
2
G=-34.5dB
1000
10000
Frequency (Hz)
0
20
100000
s
b
O
10000
12
10
2
Output mode 1, 7
RL = 8Ω
Cin = 220 nF
BW < 125 kHz
Tamb = 25°C
0
100
1000
Frequency (Hz)
10000
Output level (dB)
Vcc=3V
Vcc=5V
4
Output level (dB)
1000
Figure 44: HDout frequency response
(output mode 4)
6
16/28
100
Frequency (Hz)
Figure 41: Spkout frequency response
(output mode 1, 7)
20
10000
u
d
o
Frequency (Hz)
Figure 40: HDout PSRR vs. freq., (output
modes 6, 7, inputs grounded)
-10
1000
)
s
(
ct
Vcc=5V
Vcc=3V
8
6
Output mode 4
RL = 32Ω
G = +12dB
Cin = 220 nF
BW < 125 kHz
Tamb = 25°C
4
2
0
20
100
1000
Frequency (Hz)
10000
Electrical Characteristics
TS4851
Figure 45: Spkout SNR vs. power supply
voltage, unweighted filter,
BW = 20 Hz to 20 kHz
Figure 47: HDout SNR vs. power supply
voltage, unweighted filter,
BW = 20 Hz to 20 kHz
100
100
Vcc=3V
Vcc=5V
RL = 8Ω
Unweighted filter (20Hz to 20kHz)
THD + N < 0.7%
Tamb = 25°C
96
94
SNR (dB)
92
90
96
94
92
88
86
84
G=+12dB
82
Vcc=3V
Vcc=5V
RL = 32Ω
Unweighted filter (20Hz to 20kHz)
THD + N < 0.7%
Tamb = 25°C
98
SNR (dB)
98
90
88
86
84
82
80
80
78
78
76
76
1
2
3
4
5
6
7
1
2
3
Output mode
e
t
e
ol
100
SNR (dB)
98
96
92
od
G=+12dB
90
88
e
t
e
l
86
1
2
o
s
b
3
Pr
4
Output mode
5
)-
t(s
uc
94
6
7
o
r
P
s
b
O
104
Vcc=3V
Vcc=5V
RL = 8Ω
Weighted filter type A
THD + N < 0.7%
Tamb = 25°C
102
du
5
Figure 48: HDout SNR vs. power supply
voltage, weighted filter A,
BW = 20 Hz to 20 kHz
Vcc=3V
Vcc=5V
RL = 32Ω
Weighted filter type A
THD + N < 0.7%
Tamb = 25°C
102
100
98
SNR (dB)
104
4
Output mode
Figure 46: Spkout SNR vs. power supply
voltage, weighted filter A,
BW = 20 Hz to 20 kHz
)
s
(
ct
G=+12dB
96
94
92
90
G=+12dB
88
86
6
7
1
2
3
4
5
6
7
Output mode
O
17/28
TS4851
Electrical Characteristics
Figure 52: -3 dB lower cut off frequency vs.
input capacitance
Figure 49: Crosstalk vs. frequency
(output mode 4)
Output mode 4
Vcc = 5V
-20 RL = 32Ω
G = +12dB
Pout = 100mW
BW < 125kHz
-40
Tamb = 25°C
Lower -3dB Cut Off Frequency (Hz)
Crosstalk Level (dB)
0
Lout -> Rout
Rout -> Lout
-60
-80
20
100
1000
Rin & Lin Inputs
All gain setting
Tamb=25°C
10
Typical Input
Impedance
Minimum Input
Impedance
Maximum Input
Impedance
10000
1
r
P
e
Figure 53: Current consumption vs.
power supply voltage
Figure 50: Crosstalk vs. frequency
(output mode 4)
t
e
l
o
10
No loads
9 Tamb = 25°C
Output mode 4
Vcc = 3V
-20 RL = 32Ω
G = +12dB
Pout = 20mW
BW < 125kHz
-40
Tamb = 25°C
8
7
Lout -> Rout
Rout -> Lout
1000
t
c
u
d
o
r
P
e
100
(s)
bs
Mode 2, 4, 6
6
5
Reset state
4
3
Mode 1, 3, 5
2
1
0
10000
0
1
2
Frequency (Hz)
t
e
l
o
Power Dissipation (W)
Lower -3dB Cut Off Frequency (Hz)
5
1.4
Phone In Input
Tamb=25°C
Typical Input
Impedance
Minimum Input
Impedance
Maximum Input
Impedance
0.1
Vcc=5V
1.2 F=1kHz
THD+N
