TS4855_04 Datasheet, PDF (8/27 Pages) STMicroelectronics – LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL

TS4855
Electrical Characteristics
Table 5: Electrical characteristics at VCC = +3.0 V, GND = 0 V, Tamb = 25°C
(unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
Po
Output Power
SPKR_out, RL = 8Ω, THD = 1%, f = 1 kHz
R_out & L_out, RL = 32Ω, THD = 0.5%, f = 1 kHz
mW
300 340
20 25
THD + N Total Harmonic Distortion + Noise
R_out & L_out, Po = 20 mW, f = 1 kHz, RL = 32Ω
SPKR_out, Po = 300 mW, f = 1 kHz, RL = 8Ω
R_out & L_out, Po = 15 mW, 20 Hz < f < 20 kHz, RL = 32Ω
SPKR_out, Po = 250 mW, 20 Hz < f < 20 kHz, RL = 8Ω
%
0.5
1
0.5
0.5
SNR
Signal To Noise Ratio
A-Weighted, f = 1 kHz
80
dB
PSRR ^{5) Power Supply Rejection Ratio}
dB
SPKR_out,Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Gain (BTL) = 12 dB, Output Mode 1,3,5,7
58 62.5
R_out & L_out Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Maximum gain setting, Output Mode 2,3
52
56.5
R_out & L_out Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω
Maximum gain setting, Output Mode 4,5
49
55
R_out & L_out Vripple = 200 mV Vpp, F = 217 Hz, Input Terminated 50Ω ₄₅
Maximum gain setting, Output Mode 6,7
49.5
G2
Digital Gain Range - Rin & Lin to R_{out ,}L_out
-34.5
12 dB
G1
Digital Gain Range - Phone In HS to R_{out ,}L_out
-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 R_out, L_out
BTL minimum GAIN from Phone In HS to R_out, L_out
dB
5.4 6 6.6
-41.1 -40.5 -39.9
Phone In Volume
BTL maximum gain from Rin, Lin to R_out, L_out
BTL minimum gain from Rin, Lin to R_out, L_out
dB
11.4 12 12.6
-35.1 -34.5 -33.9
Phone In Volume
BTL gain from Phone In IHF to SPKR_out
dB
11.4 12 12.6
Zin
Phone In IHF Input Impedance, all gains setting
16 20 24 kΩ
Zin
Phone In HS, Rin & Lin Input Impedance, all gains setting
42.5 50 57.5 kΩ
tes
Enable Step up Time - ENB
20
ns
teh
Enable Hold Time - ENB
20
ns
tel
Enable Low Time - ENB
30
ns
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