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LE79R1011JC 参数 Datasheet PDF下载

LE79R1011JC图片预览
型号: LE79R1011JC
PDF下载: 下载PDF文件 查看货源
内容描述: [SLIC, Bipolar, PQCC32, PLASTIC, LCC-32]
分类和应用: 电信电信集成电路
文件页数/大小: 24 页 / 498 K
品牌: ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
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PIN DESCRIPTIONS  
Pin Names  
AGND/DGND  
A(TIP)  
Type  
Description  
Gnd  
Analog and digital ground  
Output  
Gnd  
Output of A (TIP) power amplifier  
Battery (power) ground  
BGND  
B(RING)  
C3–C1  
Output  
Input  
Input  
Input  
Output of B(RING) power amplifier  
Decoder. SLIC control pins. C3 is MSB and C1 is LSB. TTL compatible.  
Relay1 Control. TTL compatible. Logic Low activates the Relay1 relay driver.  
Relay2 Control. (Option) TTL compatible. Logic Low activates the Relay2 relay driver.  
D1  
D2  
Switchhook Detector. When enabled, a logic Low indicates that a selected condition is detected. The  
detect condition is selected by the logic inputs (C3–C1 and E1). The output is open collector with a built-  
in 15 kpull-up resistor.  
DET  
Output  
Ground-Key Enable. (Option) A logic High selects the off-hook detector. A logic Low selects the ground-  
key detector. TTL compatible.  
E1  
Input  
HPA  
HPB  
RD  
Capacitor  
Capacitor  
Resistor  
High-Pass Filter. A(TIP) side of high-pass filter capacitor.  
High-Pass Filter. B(RING) side of high-pass filter capacitor.  
Detect Resistor. Detector threshold set and filter pin.  
DC Feed Resistor. Connection point for the DC-feed current programming network. The other end of the  
network connects to the receiver summing node (RSN). The sign of VRDC is negative for normal polarity  
and positive for reverse polarity.  
RDC  
Output  
RDCR  
RREF  
RSGH  
Connection point for feedback during ringing.  
Ringing Reference. Reference voltage for Vring pin.  
Saturation Guard High. Pin for resistor to adjust Open Circuit voltage when operating from V  
.
Input  
BAT1  
Saturation Guard Low. Pin for resistor to adjust the anti-saturation cut-in voltage when operating from  
both V  
RSGL  
RSN  
Input  
Input  
V
.
BAT1 and BAT2  
Receive Summing Node. The metallic current (both AC and DC) between A(TIP) and B(RING) is equal  
to 1000 x the current into this pin. The networks that program receive gain, two-wire impedance, and feed  
resistance all connect to this node.  
RTRIP1  
RTRIP2  
Input  
Input  
Ring-Trip Detector. Ring-trip detector threshold set and filter pin.  
Ring-Trip Detector. Ring-trip detector threshold offset (switch to V  
nonringing state, this switch is open.  
). For power conservation in any  
BAT1  
Common Emitter of RYOUT1/RYOUT2. Emitter output of RYOUT1 and RYOUT2. Normally connected to  
relay ground.  
RYE  
Output  
RYOUT1  
RYOUT2  
VBAT1  
VBAT2  
VCC  
Output  
Output  
Battery  
Battery  
Power  
Power  
Relay/Switch Driver. Open collector driver with emitter internally connected to RYE.  
Relay/Switch Driver. (Option) Open collector driver with emitter internally connected to RYE.  
Battery supply and connection to substrate.  
Power supply to output amplifiers. Connect to off-hook battery through a diode.  
Positive analog power supply  
Negative analog power supply. This pin is the return for the internal V regulator.  
VNEG  
EE  
Ring Signal. Ring signal input with respect R  
. 1 V maximum level 10 kinput impedance to R  
.
REF  
VRING  
VTX  
Input  
REF  
Transmit Audio. This output is proportional to the A (TIP) and B (RING) metallic AC voltage. VTX also  
sources the two-wire input impedance programming network. (See two-to-four-wire gain accuracy.)  
Output  
Le79R101 Data Sheet  
5
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