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Sony Semiconductor Electronic Components Datasheet

CXA1684M Datasheet

High-Speed Transimpedance Amplifier

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CXA1684M
High-Speed Transimpedance Amplifier
Description
CXA1684M is a low noise transimpedance
amplifier, particularly suitable for fiber-optic system.
CXA1684M is fabricated using high-speed bipolar
process.
8 pin SOP (Plastic)
Features
High transimpedance: (Q) 3.9 k(Typ.)
(QB) 3.7 k(Typ.)
Wide band width (–3dB): (Q) 630 MHz (Typ.)
(QB) 390 MHz (Typ.)
Maximum input current: 1mA
Applications
Q output
SONET/SDH: 622 Mb/s
Fiber channel: 532 Mb/s
Differential output
SONET/SDH: 155 Mb/s
Fiber channel: 133,266 Mb/s
ESCON:
200 Mb/s
Absolute Maximum Ratings
Supply voltage
VCC–VEE –0.3 to +7.0 V
Minimum input voltage VIN
VEE V
Input current
IIN –1 to +1 mA
Output current
(Continuous) IO
0 to 50 mA
(Q/QB) (Surge)
0 to 100 mA
Storage temperature Tstg
–65 to +150 °C
Recommended Operating Conditions
DC power supply voltage
VCC–VEE 4.75 to 5.46 V
Operating ambient temperature
Ta 0 to +85 °C
Structure
Bipolar silicon monolithic IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
—1—
E94X23A8Y


Sony Semiconductor Electronic Components Datasheet

CXA1684M Datasheet

High-Speed Transimpedance Amplifier

No Preview Available !

Block Diagram and Pin Assignment
VCC 5
IN 6
C7
VEE 8
Zt
4 VCC
3 QB
2Q
1 VEE
CXA1684M
Electrical Characteristics
• DC Electrical Characteristics
Item Symbol
Supply current
IEE
Transimpedance
Q
QB
ZTQ
ZTQB
Max. Input Current before clipping
IIN
Max. Input Current
IIN2
Input voltage
VIN
Output voltage
Q VOUTQ
QB VOUTQB
VC
Input capacitance
CIN
(VCC=GND, VEE=–5.46 to –4.75V, Ta=0 to +85°C)
Test Condition
Min. Typ. Max. Unit
input pin left open –15.1 –11.2
mA
2.3 3.9 5.6
k
1.9 3.7 5.4
+100
+1000
µA
VEE+2.5
input pin left open
VEE+1.9
VCC–2.6
V
VEE+1.7
2.0 pF
• AC Electrical Characteristics
(VCC=GND, VEE=–5.46 to –4.75 V, Ta=0 to +85 °C)
Item
Symbol
Test Condition
Min. Typ. Max. Unit
Bandwidth
(–3 dB)
Q f–3 dBQ
QB f–3 dBQB
1
435 630
187 390
MHz
Input Current Noise Spectral
In fN=1 kHz to 622 MHz
Density (Mean value)
4.0
pA/Hz
1 Assumes photodiode capacitance; CPD<1.0 pF, output load capacitance; Cout=2.0 pF, Q: 620 to VEE,
QB: 1.3k to VEE
—2—


Part Number CXA1684M
Description High-Speed Transimpedance Amplifier
Maker Sony Corporation
Total Page 6 Pages
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