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I7032 데이터시트 PDF




ETC에서 제조한 전자 부품 I7032은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 I7032 기능
기능 200 Mbps Laser-Diode Driver
제조업체 ETC
로고 ETC 로고


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I7032 데이터시트, 핀배열, 회로
Create
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i7032
200 Mbps Laser-Diode Driver
Data Sheet
iCreate Technologies Corporation
© 2003 iCreate Technologies Corporation
This document contains preliminary information on product but not yet fully characterized.
iCreate Technologies Corporation reserves the right to change the specification in any manner without notice.
ICR-DS-i7032001




I7032 pdf, 반도체, 판매, 대치품
i7032
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2.2. Pin definition
Pin Name
ENBABLE
VREF1
OSADJ
IBIASFB
IBIASSET
IMODSET
IBIASOUT
GNDA
OUT-
OUT+
VCCA
IPIN
SLWSTRT
VREF2
IPINSET
FAILOUT
GNDB
VIN+
VIN-
VCCB
IMODTC
DISABLE
NC
24-pin
QFN
Pin No.
1
32-pin
TQFP
Pin No.
11
Function
Non -inverting enable TTL input
2 12 Temperature-compensated reference output
3 13 Overshoot-adjust input
4 14 Bias feedback current output
5 15 Laser bias current programming input
6 16 Laser modulation current programming input
7 18 Laser bias current output
8,10,12 19,21,23 Ground
9 20 Modulation output
11 22 Modulation output
13 24,25 +3.3V to +5V supply voltage
14 26 Monitor photodiode current input
15 27 Slow start input
16 29 Temperature-compensated reference output
17 30 Monitor photodiode programming input
18 31 Fail output
19 2,4,6,9,28 Ground
20 3 Non-inverting PECL data input
21 5 Inverting PECL data Input
22 7 +3.3V to +5V supply voltage
23
8 Connecting a resistor between this pin and ground set the
temperature independency of the modulation current
24 10 Inverting enable TTL input
1,17,32 No Connect
© 2003 iCreate Technologies Corporation
This document contains preliminary information on product but not yet fully characterized.
iCreate Technologies Corporation reserves the right to change the specification in any manner without notice.
Page 2
ICR-DS-i7032001

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I7032 전자부품, 판매, 대치품
www.DataSheet4U.com
i7032
5. Product description
The i7032 consists of a laser bias generator
with automatic power control (APC), a
modulation current driver, and a reference
generator with temperature compensation.
5.1. Modulation circuitry
The modulator output stage is designed to
drive up to 80mA into 25load in either AC-
couple or DC-coupled mode. The amplitude of
the modulation current is set with a resistor at
IMODSET pin or with resistors at IMODSET and
IMODTC pins. Please refer to 4.3. Typical
operating characteristics figure 5 and figure 7 for
more information.
The input swing is required to completely
switch the output stage depends on both ROASDJ
and modulation current.
5.2. Automatic power control
The amplitude of DC current to the laser
diode is determined by setting the resistor at
IBIASSET pin (Please refer to 4.3. Typical
operating characteristics figure 4). To maintain
constant average optical power, i7032
incorporates a control loop to compensate for
change in laser threshold current over
temperature and lifetime.
A monitor photodiode mounted in the laser
package is used to convert the optical power into
a monitor current. This current flow into the IPIN
input. The IPINSET current mirror draws current
away from IPIN node. When the current into IPIN
node equals the current drawn away by IPINSET,
the node voltage is set by 4/7xVcc reference.
When the monitor current exceeds IPINSET, the
IPIN node voltage will be forced higher. If the
monitor current decreases, the IPIN node voltage
is decreased. In either case the voltage change
results in a feedback current at IBIASFB node.
5.3. APC failure Indicator
The i7032 provides an APC failure indicator
to indicate an APC loop tacking failure. FAILOUT
is set low when the APC loop can no longer
adjust the bias current to maintain the desired
monitor current. This output is pulled up to Vcc
through an external 2.7Kresistor.
5.4. Enable inputs
The i7032 provides complementary enable
inputs (ENB+, ENB-). The laser is disabled by
reducing the reference voltage outputs (VREF1,
VREF2). Both ENB+ and ENB- pins can not be
floating and only one logic state enables laser
operation (please refer to Table 1).
ENB-
ENB+
VREF
0 0 Off
0 1 On
1 0 Off
1 1 Off
Table 1. i7032 truth table
© 2003 iCreate Technologies Corporation
This document contains preliminary information on product but not yet fully characterized.
iCreate Technologies Corporation reserves the right to change the specification in any manner without notice.
Page 5
ICR-DS-i7032001

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부품번호상세설명 및 기능제조사
I7032

200 Mbps Laser-Diode Driver

ETC
ETC

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