BU8332CKV-M Datasheet, PDF (7/29 Pages) Rohm – Directional Microphone Function

BU8332CKV-M
◆CODEC Characteristics
Application Circuit (Figure 33), Ta=25℃, AVDD=3.3V, PLLVDD=3.3V, REGON=”H”, BF=OFF
FS=16 kHz, MIC1VOL/MIC2VOL/LOUTVOL=0dB unless otherwise specified.
Parameter
Symbol
Limits
Unit
Min
Typ
Max
Conditions
Transmit signal-to-distortion
ratio + Noise
MICIN → PCMOUT
Receive signal-to-distortion
ratio + Noise
PCMIN → LINEOUT
SDT
SDR
Transmit gain tracking
(-10dBm0 reference)
MICIN → PCMOUT
GTX
Receive gain tracking
(-10dBm0 reference)
PCMIN → LINEOUT
Transmit reference level
Receive reference level
GRX
VITX
VORX
45
45
-3.0
-1.0
-2.0
-1.0
-2.0
0.037
0.400
24
-
-
-
-
-
-
-
0.050
0.500
-
-
dB
Input signal:0dBm0, 1020Hz
Using filter:20kHz LPF
-
3.0
1.0
2.0
1.0
2.0
0.068
0.625
-
Input signal:0dBm0, 1020Hz
dB _{Using filter:20kHz LPF}
dB
dB
Vrms
Vrms
Input signal:+3.0 to +0.5dBm0,
1020Hz
Using filter:1020Hz BPF
Input signal:+0.5 to -40dBm0,
1020Hz
Using filter:1020Hz BPF
Input signal:-40 to -55dBm0,
1020Hz
Using filter:1020Hz BPF
Input signal:+3.0 to -40dBm0,
1020Hz
Using filter:1020Hz BPF
Input signal:-40 to -55dBm0,
1020Hz
Using filter:1020Hz BPF
Input signal:0dBm0, 1020Hz
Using filter:1020Hz BPF
20dB amplification in inside
Input signal:0dBm0, 1020Hz
Using filter:1020Hz BPF
Input signal:0dBm0, 0.06kHz
Using filter:BPF
Transmit gain loss relative to
0
-
frequency
(1020Hz reference)
GRTX
-1.0
-
MICIN → PCMOUT
0
-
6.5
-
2.5
Input signal:0dBm0, 0.2kHz
Using filter:BPF
1.0
Input signal:0dBm0, 0.3 to 6.8kHz
dB _{Using filter:BPF}
-
Input signal:0dBm0, 7.2kHz
Using filter:BPF
-
Input signal:0dBm0, 7.56kHz
Using filter:BPF
24
-
-
Input signal:0dBm0, 0.06kHz
Using filter:BPF
Receive gain loss relative to
0
-
2.5
Input signal:0dBm0, 0.2kHz
Using filter:BPF
frequency
(1020Hz reference)
GRRX
-1.0
-
1.0
Input signal:0dBm0, 0.3 to 6.8kHz
dB _{Using filter:BPF}
PCMIN → LINEOUT
0
-
-
Input signal:0dBm0, 7.2kHz
Using filter:BPF
6.5
-
-
Input signal:0dBm0, 7.56kHz
Using filter:BPF
Transmit noise level
VNTX
-
-
-73
dBFS ^{COMOUT input in MICIN}
Using filter:A-Weight
Receive noise level
VNRX
-
-
-85
dBV
PCMIN=“L” fixation
Using filter:A-Weight
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TSZ02201-0V1V0C104570-1-2
2014.10.31 Rev.002