參數(shù)資料
型號(hào): TWL1110TQFP
廠商: Texas Instruments, Inc.
英文描述: VOICE-BAND AUDIO PROCESSOR VBAPE
中文描述: 語音頻帶音頻處理器VBAPE
文件頁數(shù): 17/37頁
文件大?。?/td> 496K
代理商: TWL1110TQFP
TWL1110
VOICE-BAND AUDIO PROCESSOR (VBAP
)
SLWS103 – NOVEMBER 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and free-air temperature (unless
otherwise noted) (continued)
power supply rejection and crosstalk attenuation
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply voltage rejection, transmit channel
MIC1N, MIC1P =0 V,
VDD = 3 Vdc + 100 mVpeak to peak, f = 0 to 50 kHz
PCM code = positive zero,
VDD = 3 Vdc + 100 mVpeak to peak, f = 0 to 50 kHz
MIC1N, MIC1P = 0 dB, f = 300 to 3400 Hz measured
differentially between EAR1ON and EAR1OP
– 86
–70
dB
Supply voltage rejection, receive channel,
EAR1 selected (differential)
– 98
–70
dB
Crosstalk attenuation, transmit-to-receive
(differential)
70
dB
Crosstalk attenuation, receive-to-transmit
PCMIN = 0 dBm0, f = 300 to 3400 Hz measured at
PCMO, EAR1 amplifier
70
dB
switching characteristics
clock timing requirements for 2.048-MHz CLK
PARAMETER
MIN
NOM
MAX
UNIT
tt
f(mclk)
Transition time, MCLK
10
ns
MCLK frequency
2.048
MHz
MCLK jitter
37%
Number of PCMCLK clock cycles per PCMSYN frame
256
256
tc(PCMCLK)
PCMCLK clock period
156
488
512
ns
Duty cycle, PCMCLK
45%
50%
68%
transmit timing requirements for 2.048-MHz CLK (see Figure 8)
PARAMETER
MIN
20
MAX
UNIT
tsu(PCMSYN)
th(PCMSYN)
Setup time, PCMSYN high before falling edge of PCMCLK
tc(PCMCLK)–20
tc(PCMCLK)–20
ns
Hold time, PCMSYN high after falling edge of PCMCLK
20
receive timing requirements for 2.048-MHz CLK (see Figure 9)
PARAMETER
MIN
MAX
UNIT
tsu(PCSYN)
th(PCSYN)
tsu(PCMI)
th(PCMI)
Setup time, PCMSYN high before falling edge of PCMCLK
20
tc(PCMCLK)–20
tc(PCMCLK)–20
ns
Hold time, PCMSYN high after falling edge of PCMCLK
20
ns
Setup time, PCMI high or low before falling edge of PCMCLK
20
ns
Hold time, PCMI high or low after falling edge of PCMCLK
20
ns
clock timing requirements for 128-kHz CLK
PARAMETER
MIN
NOM
MAX
UNIT
tt
f(mclk)
Transition time, MCLK
10
ns
MCLK frequency
128
kHz
MCLK jitter
5%
Number of PCMCLK clock cycles per PCMSYN frame
16
16
tc(PCMCLK)
PCMCLK clock period
742.19
781.25
820.31
ns
Duty cycle, PCMCLK
40%
50%
60%
tc(PCMSYN)
PCMSYN clock period
125
μ
s
Duty cycle, PCMCLK
49.5%
50%
50.5%
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