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LG1605DXB 데이터시트 PDF




Agere Systems에서 제조한 전자 부품 LG1605DXB은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 LG1605DXB 기능
기능 LG1605DXB Limiting Amplifier
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LG1605DXB 데이터시트, 핀배열, 회로
Data Sheet
February 1999
LG1605DXB Limiting Amplifier
Features
s 28 dB gain, 34 dB differential
s Large dynamic range: >60 dB
s Wideband response: 8 kHz to 3 GHz
s Extremely low ±4 ps delay skew across input range
s Complementary 50 I/Os
s Surface-mount package
s Standard ECL supply (400 mW)
Applications
s Data/clock main amplifier SONET/SDH OC-48/
STM-16 transmission systems, DWDM systems
s Digital video transmission
s Interface between 1319 receiver and LG1600
clock and data regenerator
s High-speed comparator
Functional Description
The LG1605DXB is a GaAs wideband limiting ampli-
fier with differential inputs and outputs that provides
28 dB of gain (34 dB differential) and 3 GHz of band-
width in a 50 environment (Figure 1 shows the
block diagram). At low input levels, below 10 mV to
20 mV, the circuit behaves as a linear amplifier. At
higher levels, the device goes smoothly into limiting.
The device matches the performance of an AGC
amplifier but shows none of the AGC bouncing and
attack characteristics.
VBR
8
VSS GND
7 1, 4, 5, 6, 15, 16
110 pF
110 pF
9
V–REF
10
V–IN
11
V+IN
12
V+REF
50
50
110 pF
25 kCHIP BOUNDARY
+–
–+
+–
–+
3
V–OUT
2
V+OUT
25 k
–+
13
VBF
14
VBS
Figure 1. LG1605DXB Block Diagram
12-3214(F).r3




LG1605DXB pdf, 반도체, 판매, 대치품
LG1605DXB Limiting Amplifier
Data Sheet
February 1999
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent or latent damage to the device. These
are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Supply Voltage Range (VSS)
Power Dissipation
Voltage (all pins)
V+REF – V+IN
V–REF – V–IN
Storage Temperature Range
Operating Case Temperature Range
Min
Max
Unit
–7 0.5 V
— 1W
VSS 0.5
V
— ±2 V
— ±2 V
–40 125 °C
0 100 °C
Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Parameter
Case Temperature
Power Supply
Symbol
tCASE
VSS
Min
0
–5.7
Max
70
–4.7
Unit
°C
V
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid expo-
sure to electrostatic discharge (ESD) during handling and mounting. Lucent employs a human-body model (HBM)
and a charged-device model (CDM) for ESD-susceptibility testing and protection design evaluation. No industry-
wide standard has been adopted for the CDM. However, a standard HBM (resistance = 1500 , capacitance =
100 pF) is widely used and, therefore, can be used for comparison purposes. The HBM ESD threshold presented
here was obtained by using these circuit parameters.
Table 4. ESD Threshold
HBM ESD Threshold
Device
Voltage
LG1605DXB
200 V
Mounting and Connections
Certain precautions must be taken when using solder. For installation using a constant temperature solder, temper-
atures of under 300 °C may be employed for periods of time up to 5 s, maximum. For installation with a soldering
iron (battery operated or nonswitching only), the soldering tip temperature should not be greater than 300 °C and
the soldering time for each lead must not exceed 5 s. This device is supplied with solder on the back of the pack-
age. Due to the high gain of the device, it is recommended to solder the back of the package to ground.
4 Lucent Technologies Inc.

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LG1605DXB 전자부품, 판매, 대치품
Data Sheet
February 1999
Typical Performance Characteristics
(at TA = 25 °C)
0
–5
–10
–15
–20
–25
–30
–35
–40
0 1 2 3 45
FREQUENCY (GHz)
Figure 5. Input Return Loss S11
12-3217(F)
40
35
30
25
20
15
10
5
0
0 1 2 3 45
FREQUENCY (GHz)
Figure 6. Gain S21
12-3218(F)
LG1605DXB Limiting Amplifier
0
–10
–20
–30
–40
–50
–60
–70
–80
0
123
FREQUENCY (GHz)
Figure 7. Isolation S12
45
12-3219(F)
0
–5
–10
–15
–20
–25
–30
–35
–40
0 1 2 3 45
FREQUENCY (GHz)
12-3220(F)
Figure 8. Output Return Loss S22
HORIZONTAL: 100 ps/div, VERTICAL: 12 mV/div; VIN = 2.23 mVp-p, VOUT = 58.8 mVp-p, σ = 4.45 mVrms
Lucent Technologies Inc.
Figure 9. Output Noise Histogram
7

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