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TS4855 Datasheet(PDF) 8 Page - STMicroelectronics

Part # TS4855
Description  LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TS4855 Datasheet(HTML) 8 Page - STMicroelectronics

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TS4855
Electrical Characteristics
8/27
Po
Output Power
SPKRout, RL = 8Ω, THD = 1%, f = 1 kHz
Rout & Lout, RL = 32Ω, THD = 0.5%, f = 1 kHz
300
20
340
25
mW
THD + N Total Harmonic Distortion + Noise
Rout & Lout, Po =20mW, f = 1kHz, RL =32Ω
SPKRout, Po = 300 mW, f = 1 kHz, RL = 8Ω
Rout & Lout, Po =15mW, 20 Hz <f <20kHz, RL = 32Ω
SPKRout, Po = 250 mW, 20 Hz < f < 20 kHz, RL = 8Ω
0.5
0.5
0.5
1
%
SNR
Signal To Noise Ratio
A-Weighted, f = 1 kHz
80
dB
PSRR 5) Power Supply Rejection Ratio
SPKRout,Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Gain (BTL) = 12 dB, Output Mode 1,3,5,7
Rout & Lout Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Maximum gain setting, Output Mode 2,3
Rout & Lout Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Maximum gain setting, Output Mode 4,5
Rout & Lout Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Maximum gain setting, Output Mode 6,7
58
52
49
45
61
55
52
48
dB
G2
Digital Gain Range - Rin & Lin to Rout ,Lout
-34.5
12
dB
G1
Digital Gain Range - Phone In HS to Rout ,Lout
-40.5
6
dB
Digital Gain stepsize
1.5
dB
Stepsize Error
± 0.6
dB
Phone In Volume
BTL maximum GAIN from Phone In HS to Rout, Lout
BTL minimum GAIN from Phone In HS to Rout, Lout
5.4
-41.1
6
-40.5
6.6
-39.9
dB
Phone In Volume
BTL maximum gain from Rin, Lin to Rout, Lout
BTL minimum gain from Rin, Lin to Rout, Lout
11.4
-35.1
12
-34.5
12.6
-33.9
dB
Phone In Volume
BTL gain from Phone In IHF to SPKRout
11.4
12
12.6
dB
Zin
Phone In IHF Input Impedance, all gains setting
16
20
24
k
Ω
Zin
Phone In HS, Rin & Lin Input Impedance, all gains setting
42.5
50
57.5
k
Ω
tes
Enable Step up Time - ENB
20
ns
teh
Enable Hold Time - ENB
20
ns
tel
Enable Low Time - ENB
30
ns
Table 5: Electrical characteristics at VCC = +3.0 V, GND = 0 V, Tamb = 25°C
(unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit



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