MB86437 Datasheet, PDF (26/35 Pages) Fujitsu Component Limited. – 3 V Single Power Supply Audio Interface Unit (AIU)

MB86437
3. Transmission Characteristics
(1) Microphone Amp System
Parameter
Symbol
Conditions
Gain
(between MICO and BBO)
MICO = –20 dBV, 1020 Hz
GMB SW3 = on, SW1 = SW4 = SW5 = off
EV0 = 0 dB
Gain
(between JMICO and BBO)
GJB
JMICO = –20 dBV, 1020 Hz
SW4 = on, SW1 = SW3 = SW5 = off
EV0 = 0 dB
Gain
(between TAUD and BBO)
TAUD = –20 dBV, 1020 Hz
GTB SW5 = on, SW1 = SW3 = SW4 = off
EV0 = 0 dB
Signal to noise ratio
(Microphone amp [1])
Ain1 = –40 dBV (+20 dBgain), 1020 Hz
SMB SW3 = on, SW1 = SW4 = SW5 = off
C message, Measured at MICO
Signal to noise ratio
(Microphone amp [2])
Ain2 = –40 dBV (+20 dBgain), 1020 Hz
SJB SW4 = on, SW1 = SW3 = SW5 = off
C message, Measured at JMICO
Signal to noise ratio
(BBO)
TAUD = –40 dBV, 1020 Hz, SW5 = on,
STB
SW1 = SW3 = SW4 = SW10 = SW11 =
off, EV0 = 0 dB, C message,
Measured at BBO
Note: Measurement conditions: s Standard Test Circuit
Value
Unit
Min. Typ. Max.
–1.5 — 1.5 dB
–1.5 — 1.5 dB
–1.5 — 1.5 dB
40
—
— dB
40
—
— dB
40
—
— dB
(2) Reception
Parameter
Symbol
Conditions
Gain
Conditions:
TBO = –20 dB, 1020 Hz
Output power
Signal to noise ratio
GTR Measured at RAUD
GTE
EV6 = 0 dB,
Measured between EAR and XEAR
GTJ EV7 = 0 dB, Measured at JEAR
GTT
EV8 = 0 dB, SW9b = on,
SW9c = off, Measured at TONE
PE
R = 32 Ω, Between EAR and XEAR,
EV6 = 0 dB, THD = 10%, 1020 Hz
PJ
R = 32 Ω, JEAR, EV7 = 0 dB,
THD = 10%, 1020 Hz
TBO = –40 dBV, 1020 Hz,
SW6b = SW7b = SW8b = SW9b = on,
STR SW15 = AMP4, EV6, 7, 8 = 0 dB
C message, RAUD, EAR-XEAR,
Measured at JEAR
SGO = –40 dBV, 1020 Hz, SW7b = on,
STJ SW15 = AMP5, C message, Measured
at JEAR
Note: Measurement conditions: s Standard Test Circuit
Value
Unit
Min. Typ. Max.
–1
0
1
5
6
–1
0
7
dB
1
–1
0
1
10.0 —
— mW
5.0 —
— mW
40
—
— dB
40
—
— dB
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