U4082B_15 Datasheet, PDF (5/13 Pages) Unisonic Technologies – VOICE SWITCHED SPEAKER-PHONE CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD
U4082B
LINEAR INTEGRATED CIRCUIT
„ ELECTRICAL CHARACTERISTICS (T_A=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
Supply Voltages
V+ Supply Current
I_CC
V_CC=6.5V, CD=0.8V
V_CC =6.5V, CD=2V
CD Input Resistance
R_CD V_CC =V_CD=6.5V
High
CD Input Voltage _Low
V_CDH
V_CDL
V_B Output Voltage
V_B
V_CC =3.5V
V_CC =5V
V_B Output Resistance
R_OVB I_VB=1mA
V_B Power Supply Rejection Ratio
PSRR C_VB=220µF, f=1kHz
Attenuators
R_X Mode, R_XI=150mVrms
G_RX V_CC=5V
Receive
Attenuator
R_X Mode, R_XI=150mVrms
Gain Change
Gain
AGC Gain Change
(f=1kHz, V_LC=V_B) _{Idle Mode, RXI=150mVrms}
R_X to T_X Mode Range
G_RX
ΔG_RX1
ΔG_RX2
G_RXI
ΔG_RX3
V_CC =3.5V
V_CC =3.5V vs. V_CC =5V
V_CC =3.5V vs. V_CC =5V
Volume Control Range
V_CR
R_XO DC Voltage
ΔR_XO DC Voltage
V_RXO
ΔV_RXO
R_X Mode
R_X to T_X Mode
R_XO High Voltage
V_RXOH I_OUT=-1mA, R_XI=V_B+1.5V
R_XO Low Voltage
R_XI Input Resistance
V_RXOL
R_RXI
I_OUT=+1mA, R_XI=V_B-1V,
Output Measured with
Respect to V_B
R_XI<350mVrs
Transmit Attenuator Gain (f=1kHz)
T_X Mode, T_XI=150mVrms
G_TX
Idle Mode, T_XI=150mVrms
T_X to Rx Mode Range
G_TXI
ΔG_TXI
T_XO DC Voltage
ΔT_XO DC Voltage
V_TXO
ΔV_TXO
T_X
T_X to R_X Mode
T_XO High Voltage
V_TXOH I_OUT=-1mA, T_XI=V_B+1.5V
T_XO Low Voltage
T_XI Input Resistance
V_TXOL
R_TXI
I_OUT =+1mA, T_XI=V_B-1V,
Output Measured with
Respect to V_B
T_XI<350mVrs
Gain Tracking
G_TR G_RX+G_TX, @T_X, I_DIE, R_X
Attenuator Control
R_X Mode
V_LC=V_B
CT Voltage ( CT-V_B)
Idle Mode
T_X Mode
CT Source Current
I_CTR (Switching to R_X Mode)
CT Sink Current
I_CTT (Switching to T_X Mode)
CT Slow Idle Current
I_CTS
CT Fast Idle Internal Resistance
R_FI
VLC Input Current
I_VLC
Dial Tone Detector Threshold
V_DT
MIN TYP MAX UNIT
5.5 8 mA
600 800 μA
50 90
kΩ
2
V_CC V
0.8 V
1.3
V
1.8 2.1 2.4
400
Ω
54
dB
4 6 8 dB
4 6 8 dB
-0.5 0 +0.5 dB
-25 -15 dB
-22 -20 -17 dB
49 52 54 dB
27 35
dB
V_B
V
+-10 +-150 mV
3.7
V
-1.5 -1 V
7 10 14 kΩ
4 6 8 dB
-22 -20 -17 dB
49 52 54 dB
VB
V
+-30 +-150 mV
3.7
V
-1.5 -1 V
7 10 14 kΩ
+-0.1
dB
240
mV
0
mV
-240
mV
-85 -60 -40 µA
+40 +60 +85 µA
0
µA
1.5 2 3.6 kΩ
-60
nA
10 15 20 mV
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 13
QW-R108-020.A