TSC2101_08 Datasheet, PDF (6/95 Pages) Texas Instruments – AUDIO CODEC WITH INTEGRATED HEADPHONE, SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER

TSC2101
SLAS392D− JUNE 2003 − REVISED MAY 2005
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At +25°C, AVDD1, AVDD2, DRVDD, IOVDD = 3.3 V, BVDD = 3.9 V, DVDD = 1.8 V, V_ref = 2.5 V, Fs (Audio) = 48 kHz, unless otherwise noted
(continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
DAC HEADPHONE OUTPUT
Load = 16 Ω (single-ended), 50 pF
Full-scale output voltage (0dB)
0.848
Vrms
Output common mode
1.5
V
SNR
Measured as idle channel noise, A-weighted
85
95
dBA
THD
−1 dBFS Input, 0-dB gain
−80
−60 dB
PSRR
217 Hz, 100 mV on
AVDD1/AVDD2/DRVDD⁽¹⁾
1020 Hz, 100 mV on
AVDD1/AVDD2/DRVDD⁽¹⁾
55
dB
55
dB
Interchannel isolation
Coupling from ADC to DAC
80
dB
Mute attenuation
100
dB
Maximum output power
Per channel
44
mW
Digital volume control
−63.5
0 dB
Digital volume control step size
0.5
dB
Channel separation
Between SPK1 and SPK2
−75
dB
DAC SPEAKER OUTPUT
Load = 8 Ω (differential), 50 pF
Full-scale output voltage (0 dB)
1.838
Vrms
Output common mode
1.75
V
SNR
Measured as idle channel noise, A-weighted
90
98
dBA
THD
−1 dBFS Input, 0-dB gain
−74
−55 dB
217 Hz, 100 mV on AVDD1/2
70
PSRR
217 Hz, 100 mV on BVDD
1020 Hz, 100 mV on AVDD1/2
70
dB
70
1020 Hz, 100 mV on BVDD
70
Interchannel isolation
Coupling from ADC to DAC
90
dB
Mute attenuation
100
dB
Maximum output power
400
mW
CELLPHONE
MIC INPUT TO CPOUT
1020-Hz Sine wave input on MICIN_HND,
load on CP_OUT = 10 kΩ, 50 pF
Full-scale input voltage (0 dB)
0.707
Vrms
Input common mode
1.5
V
Full-scale output voltage (0 dB)
0.707
Vrms
Output common mode
1.5
V
SNR
Measured as idle channel noise, A-weighted
80
89
dBA
THD
0 dBFS Input, 0-dB gain
−73
−60 dB
PSRR
217 Hz, 100 mV on AVDD1/AVDD2/DRVDD
1020 Hz, 100 mV on
AVDD1/AVDD2/DRVDD
43
dB
43
Interchannel isolation
CP_IN to CP_OUT
75
dB
Mute attenuation
CP_OUT muted
100
dB
(1) _{DAC PSRR measurement is calculated as:}
ǒ Ǔ PSRR + 20 log10
VSIGsup
VSPK1_ń2
6