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부품번호 | BL1110A 기능 |
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기능 | Low voltage versatile transmission IC | ||
제조업체 | BELLING | ||
로고 | |||
전체 8 페이지수
DESCRIPTION:
BL1110A
BL1110A(BL1001) is a low voltage versatile transmission IC. It offers the
entire microphone, receive and line interface functions required in telephone sets. It
performs the interface between the line and the transducers of the handset. It includes
a DTMF amplifier, a microphone amplifier and a receive amplifier. The selection
between the microphone amplifier and the DTMF amplifier is made with a “MUTE”
function. The MUTE/input switches-off both the microphone and the receive
amplifiers and switches-on the DTMF amplifier.
FEATURES
• Low DC line voltage: operates down to 1.6 V
• Voltage regulator with adjustable DC voltage
• Provides a supply for external circuits
• Symmetrical high impedance inputs (64 kW) for dynamic, magnetic or piezo-
electric microphones
• Asymmetrical high impedance input (32 kW) for electrets microphones
• DTMF input with confidence tone
• MUTE input for pulse or DTMF dialing
• Receiving amplifier for dynamic, magnetic or piezo-electric earpieces
• AGC line loss compensation for microphone and earpiece amplifiers.
• Line powered telephone sets, cordless telephones, fax machines, answering
machines.
BLOCK DIAGRAM:
BL1001
http://www.belling.com.cn
-1-
Total 8 Pages
8/10/2006
Wrote by 2006
Gvtx
voltage gain from
MIC+/MIC- to LN
VMIC = 4mV (RMS )
∆Gvtx ( f )
gain variation with
frequency
referred to 1 kHz
f = 300 ~ 3400 Hz
∆Gvtx (T )
gain variation with
temperature
referred to 25 °C
Tamb = −25oC ~ 75oC
VLN (max)
maximum sending signal
(RMS value)
Iline = 15mA;THD = 2%
Iline = 4mA;THD = 2%
Receiving amplifier (pins IR, QR and GAR)
zi input impedance
Gvrx
voltage gain from IR to
QR
∆Gvrx ( f )
gain variation with
frequency
referred to 1 kHz
∆Gvtx (T )
gain variation with
temperature
referred to 25 °C
Vo(max)
maximum receiving signal
(RMS
value)
Automatic gain control (pin AGC)
gain control range for
∆Gvtrx
microphone
and receiving amplifiers
with
respect to Iline = 15 mA
I start
highest line current for
maximum gain
I stop
lowest line current for
minimum gain
DTMF amplifier (pin DTMF)
VIR = 4mV (RMS )
f = 300 ~ 3400 Hz
Tamb = −25oC ~ 75oC
RL = 150Ω;THD = 2%
RL = 450Ω;THD = 2%
Iline = 85mA
zi input impedance
42.7
—
—
1.4
—
—
32
—
—
—
—
—
—
—
—
Gvdtmf
voltage gain from DTMF
to LN
∆Gvdtmf ( f )
gain variation with
frequency
referred to 1 kHz
∆Gvdtmf (T )
gain variation with
temperature
referred to 25 °C
voltage gain from DTMF
Gvct to QR
(confidence tone)
Mute function (pin MUTE)
VIL LOW level input voltage
VIH HIGH level input voltage
I
MUTE
input current
∆Gvtrxm
gain reduction for
microphone and
receiving amplifiers
MUTE = LOW
VDTMF = 20mV (rms)
f = 300 ~ 3400 Hz
24.1
—
Tamb = −25oC ~ 75o C
VDTMF = 20mV (rms)
RL = 150Ω
—
—
VEE − 0.4
VEE + 1.5
—
MUTE = LOW —
BL1110A
43.7 44.7 dB
± 0.2 —
dB
± 0.3
1.7
0.8
—
—
—
dB
V
V
20 —
33 34
± 0.2 —
kΩ
dB
dB
± 0.3
0.25
0.35
—
—
—
dB
V
V
5.9 — dB
23 — mA
56 — mA
20 — kΩ
25.3 26.5 dB
± 0.2 —
dB
± 0.4 —
dB
-15 — dB
— VEE + 0.3 V
— VCC + 0.4 V
1.5 —
uA
80 —
dB
http://www.belling.com.cn
-4-
Total 8 Pages
8/10/2006
Wrote by 2006
4페이지 BL1110A
Fig.3 Voltage gain from IR to QR
Fig.4 Voltage gain from DTMF to LN
http://www.belling.com.cn
-7-
Total 8 Pages
8/10/2006
Wrote by 2006
7페이지 | |||
구 성 | 총 8 페이지수 | ||
다운로드 | [ BL1110A.PDF 데이터시트 ] |
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부품번호 | 상세설명 및 기능 | 제조사 |
BL1110A | Low voltage versatile transmission IC | BELLING |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |