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UTCMC34018 Datasheet(数据表) 5 Page - Unisonic Technologies

部件型号  UTCMC34018
说明  VOICE SWITCHED SPEAKER-PHONE CIRCUIT
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
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UTCMC34018 Datasheet(HTML) 5 Page - Unisonic Technologies

 
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UTCMC34018 LINEAR INTEGRATED CIRCUIT
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R108-006,A
(continued)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
LOGAMPS
RLO Leakage Current
(Pin 8 = VB+1.0V)
ILKRLO
2.0
µA
TLO Leakage Current
(Pin 6 = VB+1.0V)
ILKTLO
2.0
µA
Transmit-Receive Switching
Threshold (Ratio of ITLI to IRLI - at
20
µA - to Switch Tx-Rx
Comparator)
ITH
25
TRANSMIT DETECTOR
XDC Voltage
Idle Mode
Tx Mode
VXDC
0
4.0
Vdc
Vdc
CP2 Current Source
ICP2
5.0
10
13
µA
Distortion
Rx Mode
RXI to SKO
(pin 27 = 10mVrms,1KHz)
RXD
1.5
%
Tx Mode
MCI to TXO
(Pin 9 = 5mVrms,1KHz)
TXD
2.0
%
Note 1:V+=7.5V,CS =0.7V except where noted.
Note 2:Rx mode:pin7=-100
µA,pin5=+100µA, except where noted.
Tx mode: pin 5,13=-100
µA, pin 7=+100µA, pin 11=0V.
Idle mode: Pin 5=-100
µA, 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.
TEMPERATURE CHARACTERISTICS(-20 TO +60°C )
PARAMETER
PIN
TYP CHANGE
UNIT
V+ Supply Current ( V+ 11V,Pin 18 = 0.7V )
16
-0.2
%/
°C
V+ Supply Current(V+ 11V,Pin 18 = 1.6V )
16
-0.4
%/
°C
VCC Voltage( V+ = 7.5V )
20
+0.1
%/
°C
Attenuator Gain ( Max and Min Setting )
+-0.003
dB/
°C
Delta RXO,TXO Voltage
4,26
+-0.24
%/
°C
Speaker AMP Gain
15,19
+-0.001
dB/
°C
Microphone AMP Gain
9,10
+-0.4
dB/
°C
Microphone Amp Input Resistance
9
+0.4
%/
°C
Tx-Rx Switching Threshold (20
µA)
5,7
+-0.2
nA/
°C
DESIGN GUIDELINES(REF TO FIG. 1)
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,




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