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CPC5611ATR 参数 Datasheet PDF下载

CPC5611ATR图片预览
型号: CPC5611ATR
PDF下载: 下载PDF文件 查看货源
内容描述: LITELINK ™II硅数据访问安排( DAA ) IC [LITELINK⑩ II Silicon Data Access Arrangement (DAA) IC]
分类和应用:
文件页数/大小: 18 页 / 731 K
品牌: CLARE [ CLARE ]
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CPC5610/CPC5611  
rent. The photocurrent, a linear representation of the  
receive signal, is amplified and converted to a differen-  
tial voltage output on RX+ and RX-.  
Figure 7. Differential and Single-ended Transmit  
Path Connections to LITELINK  
Host CODEC or  
Transmit Circuit  
LITELINK  
Variations in gain are controlled to within ±1 dB by an  
on-chip automatic gain control (AGC) circuit, which  
sets the output of the photoamplifier to unity gain.  
0.1uf  
0.1uf  
TX-  
TXA1  
TXA2  
-
TX+  
+
To accommodate single-supply operation, LITELINK  
includes a small DC bias on the RX outputs of 1.0  
Vdc. Most applications should AC couple the RX out-  
puts as shown in Figure 6.  
Host CODEC or  
Transmit Circuit  
LITELINK  
LITELINK may be used for differential or single-ended  
output as shown in Figure 6. Single-ended use will  
produce 6 dB less signal output amplitude. Do not  
0.1uf  
0.1uf  
TX-  
TXA1  
-
TX+  
+
exceed 0 dBm into 600 (2.2 V ) signal input.  
P-P  
Figure 6. Differential and Single-ended Receive  
Path Connections to LITELINK  
3.4 DC Characteristics  
LITELINK  
Host-side CODEC  
or Voice Circuit  
The CPC5610 and CPC5611 are designed for world-  
wide application regarding DC characteristics, includ-  
ing use under the requirements of TBR-21. The ZDC,  
DCS1, and DCS2 pins control the VI slope character-  
istics of LITELINK. Selecting appropriate resistor val-  
0.1uF  
0.1uF  
RX+  
RX+  
RX-  
RX-  
ues for R  
(R16) and R  
(R15) in the provided  
ZDC  
DCS  
application circuits assure compliance with DC  
requirements.  
0.1uF  
RX+  
RX  
3.4.1 Resistive Termination Applications  
LITELINK includes a telephone line current limit fea-  
ture that is selectable by selecting the desired value  
for R  
(R16) using the following formula:  
ZDC  
3.3.2 Transmit Signal Path  
Connect transmit signals from the host equipment to  
the TX+ and TX- pins of LITELINK. Do not exceed a  
1V  
ICLAmps = ------------- + 0.011A  
RZDC  
signal level of 0 dBm in 600 (or 2.2 V ). Differen-  
P-P  
Clare recommends using 8.2 for R  
in North  
ZDC  
tial transmit signals are converted to single-ended sig-  
nals in LITELINK. The signal is coupled to the transmit  
photodiode amplifier in a similar manner to the receive  
path.  
America and Japan, limiting telephone line current to  
133 mA.  
3.4.2 Reactive Termination Applications  
The output of the photodiode amplifier is coupled to a  
voltage-to-current converter via a transconductance  
stage where the transmit signal modulates the tele-  
phone line loop current. As in the receive path, gain is  
set to unity automatically, limiting insertion loss to 0,  
±1 dB.  
TBR-21 sets the telephone line current limit at 60 mA.  
To meet this requirement, set R  
(R16) to 22.1 .  
ZDC  
See Clare application note AN-146 Guidelines for Effec-  
tive LITELINK Designs for information on FET heat sink-  
ing in this application.  
12  
www.clare.com  
Rev. 9.0  
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