BU8732AKV Datasheet, PDF (6/11 Pages) Rohm – CODEC IC for digital mobile phone

Communication ICs
BU8732AKV
zElectrical characteristics
(Ta=25°C, DVDD=RXVDD=TXVDD=3.0V, FSYNC=8kHz, DCLK=256kHz_, gain 0dB, input signal frequency=1 kHz_,
30 kHz LFP, specified particularly)
< CODEC block >
Parameter
Transmit signal-to-
distortion ratio
TEXTADD→PCMOUT
Receive signal-to-
distortion ratio
PCMIN→AUDO
Transmit Gain error
TEXTADD→PCMOUT
Receive Gain error
PCMIN→AUDO
Transmit reference
signal level
Receive reference
signal level
Transmit Gain relative to
input signal gain at
1.02KHZ
TEXTADD→PCMOUT
Receive Gain relative to
input signal gain at
1.02KHZ
PCMIN→AUDO
Transmit noise level
TEXTADD→PCMOUT
Receive noise level
PCMIN→AUDO
Noise level of speaker
amplifier for receiver
Noise level of speaker
amplifier for earphone
∗3) Using C-MESSAGE filter
Symbol
SDT
SDR
GTX
GRX
VITX
VORX
GRTX
GRRX
Min. Typ. Max.
35
−
−
29
−
−
24
−
−
35
−
−
29
−
−
24
−
−
−0.3
−
0.3
−0.6
−
0.6
−1.6
−
1.6
−0.3
−
0.3
−0.6
−
0.6
−1.6
−
1.6
0.257 0.346 0.436
0.291 0.346 0.411
24
−
−
0
−
2.5
−0.3
−
0.3
−0.3
−
0.9
0
−
−
6.5
−
−
−0.3
−
0.3
−0.3
−
0.9
0
−
−
6.5
−
−
Unit
dB
dB
dB
dB
Vrms
Vrms
dB
dB
Conditions
1020Hz input
(LINEAR) ∗3)
0 to −40dBm0
−40dBm0
−45dBm0
1020Hz input
(LINEAR) ∗3)
0 to −40dBm0
−40dBm0
−45dBm0
+3 to −40dBm0
1020Hz, (LINEAR) ∗3)
−40 to −50dBm0
Reference level= −10dBm0
−50 to −55dBm0
+3 to −40dBm0
1020Hz, (LINEAR) ∗3)
−40 to −50dBm0
Reference level= −10dBm0
−50 to −55dBm0
1020Hz, 0dBm0
EV0=0dB, (LINEAR) ∗3)
TEXTADD→
PCMOUT
1020Hz, 0dBm0
EV1=0dB, (LINEAR) ∗3) ^{PCMIN→AUDO}
1020Hz, 0dBm0
Input reference
EV0=0dB, (LINEAR)
1020Hz, 0dBm0
Input reference
EV1=0dB, (LINEAR)
0.06kHz
0.2kHz
0.3 to 3.0kHz
3.4kHz
3.6kHz
3.78kHz
0.3 to 3.0kHz
3.4kHz
3.6kHz
3.78kHz
VNTX
−
−
−65
dBV EV0=0dB, (LINEAR) ∗3)
VNRX
VNSPC
VNEAR
PCMIN= "L" fixed, EV1=0dB,
−
−
−70
dBV
(LINEAR) ∗3)
−
−90
−
SPCOP-SPCON, RL=32Ω
dBV
Connect SPPN-SPPO ∗3)
EARO, RL=32Ω
−
−93
−
dBV
Connect ERPN-ERPO ∗3)
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