UTCMC34018 데이터 시트보기 (PDF) - Unisonic Technologies
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UTCMC34018 Datasheet PDF : 14 Pages
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UTCMC34018 LINEAR INTEGRATED CIRCUIT
(continued)
PARAMETER
SYMBOL
MIN
TYP
LOGAMPS
RLO Leakage Current
ILKRLO
(Pin 8 = VB+1.0V)
TLO Leakage Current
ILKTLO
(Pin 6 = VB+1.0V)
Transmit-Receive Switching
Threshold (Ratio of ITLI to IRLI - at
ITH
25
20µA - to Switch Tx-Rx
Comparator)
TRANSMIT DETECTOR
XDC Voltage
Idle Mode
Tx Mode
VXDC
0
4.0
CP2 Current Source
ICP2
5.0
10
Distortion
Rx Mode
RXI to SKO
RXD
1.5
(pin 27 = 10mVrms,1KHz)
Tx Mode
MCI to TXO
TXD
2.0
(Pin 9 = 5mVrms,1KHz)
Note 1:V+=7.5V,CS =0.7V except where noted.
Note 2:Rx mode:pin7=-100µA,pin5=+100µA, except where noted.
Tx mode: pin 5,13=-100µA, pin 7=+100µA, pin 11=0V.
Idle mode: Pin 5=-100µA, pin 7,13=+100µA.
Note 3:Current into a pin designed as +,current out of a pin designed -;
Note 4:Voltage referred to pin 22,Tamb=25°C.
MAX
2.0
2.0
13
TEMPERATURE CHARACTERISTICS(-20 TO +60°C )
PARAMETER
PIN
TYP CHANGE
V+ Supply Current ( V+ 11V,Pin 18 = 0.7V )
16
-0.2
V+ Supply Current(V+ 11V,Pin 18 = 1.6V )
VCC Voltage( V+ = 7.5V )
Attenuator Gain ( Max and Min Setting )
Delta RXO,TXO Voltage
Speaker AMP Gain
Microphone AMP Gain
Microphone Amp Input Resistance
Tx-Rx Switching Threshold (20µA)
16
20
4,26
15,19
9,10
9
5,7
-0.4
+0.1
+-0.003
+-0.24
+-0.001
+-0.4
+0.4
+-0.2
DESIGN GUIDELINES(REF TO FIG. 1)
UNIT
µA
µA
Vdc
Vdc
µA
%
%
UNIT
%/°C
%/°C
%/°C
dB/°C
%/°C
dB/°C
dB/°C
%/°C
nA/°C
ATTENUATORS
The transmit and receive attenutors are complementary in function, i.e., when one is at maximum gain the other
is at maximum attenuator, and vice versa. They are never both on or both off. Their main purpose is to control the
transmit and receive paths to provide the half-duplx operation required of a speaker-phone. The attenuators are
controlled solely by the voltage at the ACF pin(pin 25).The ACF voltage is provided by the attenuator control block,
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R108-006,A
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