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參數(shù)資料
| 型號： | U4084B |
| 英文描述： | Low-Voltage, Voice-Switched Circuit for Hands-Free Operation |
| 中文描述： | 低電壓，語音開關(guān)電路免提操作 |
| 文件頁數(shù)： | 6/26頁 |
| 文件大小： | 544K |
| 代理商： | U4084B |
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U4084B
TELEFUNKEN Semiconductors
Rev. A1, 31-Jan-97
Preliminary Information
6 (26)
Electrical Characteristics
T
amb
= +25
°
C, V
S
= 5.0 V, CD
0.8 V, unless otherwise specified
Parameters
Test Conditions / Pins
Symbol
Min.
Typ.
Max.
Unit
Power supply
Supply current
V
S
= 6.5 V, CD = 0.8 V
V
S
= 6.5 V, CD = 2.0 V
V
S
= V
= 6.5 V
– High
– Low
V
S
= 3.5 V
V
S
= 5.0 V
I
VB
= 1.0 mA
C
VB
= 220 F, f = 1.0 kHz
I
S
4.0
600.0
90.0
6.0
800.0
mA
A
k
V
CD input resistance
CD input voltage
R
CD
V
CDH
V
CDL
V
B
50.0
2.0
0.0
V
S
0.8
Output voltage
1.8
1.3
2.1
400.0
54.0
2.4
V
Output resistance
Power supply rejection
ratio
Attenuators
Receive attenuator gain
R
OVB
PSRR
dB
f = 1.0 kHz, V
CI
= V
B
R mode, RI = 150 mV
rms
(V
S
= 5.0 V)
R mode, RI = 150 mV
rms
(V
S
= 3.5 V)
V
S
= 3.5 V vs. V
S
= 5.0 V
–V
S
= 2.8 V vs. V
S
= 5.0 V
RI = 150 mV
rms
G
R
4.0
6.0
8.0
dB
Gain change
AGC gain change
Idle mode
Range R to T mode
Volume control range
RECO DC voltage
RECO DC voltage
RECO high voltage
G
R1
G
R2
G
RI
G
R3
V
CR
V
RECO
V
RECO
V
RECOH
–0.5
0.0
–25.0
–20.0
52.0
35.0
V
B
10
+0.5
–15.0
–17.0
54.0
–22.0
49.0
27.0
dB
R mode, 0.3 V
B
< V
CI
< V
B
R mode
R to T mode
I
O
= 1.0 mA
RI = V
B
+ 1.5 V
I
O
= 1.0 mA
RI = V
B
–1.0 V,
output measured w.r.t. V
B
RI < 350 mV
rms
f = 1.0 kHz
T mode, TI = 150 mV
rms
Idle mode, TI = 150 mV
rms
Range T to R mode
T mode
T to R mode
I
O
= –1.0 mA
TI = V
B
+ 1.5 V
I
O
= +1.0 mA
TI = V
B
– 1.0 V,
output measured w.r.t. V
B
TI < 350 mV
rms
G
R + G
T, @ T, Idle, R
dB
V
mV
V
150.0
3.7
RECO low voltage
V
RECOL
–1.5
–1.0
V
RI input resistance
Transmit attenuator gain
R
RI
7.0
10.0
14.0
k
G
T
G
TI
G
TI
V
TO
V
TO
4.0
–22.0
49.0
6.0
–20.0
52.0
V
B
100
8.0
–17.0
54.0
dB
TO DC voltage
TO DC voltage
TO high voltage
V
150.0
mV
V
TOH
V
TOL
3.7
V
V
TO low voltage
–1.5
–1.0
TI input resistance
Gain tracking
R
TI
G
TR
7.0
10.0
0.5
14.0
k
dB
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