ML4622IS 반도체 회로 부품 판매점
Fiber Optic Data Quantizer
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 Micro Linear |
January 1997
ML4622, ML4624
Fiber Optic Data Quantizer
GENERAL DESCRIPTION
The ML4622 and ML4624 data quantizers are low noise,
wideband, bipolar monolithic ICs designed specifically for
signal recovery applications in fiberoptic receiver systems.
They contain a wideband limiting amplifier which is
capable of accepting an input signal as low as 2mVP-P
with a 55dB dynamic range. This high level of sensitivity
is achieved by using a DC restoration feedback loop
which nulls any offset voltage produced in the limiting
amplifier.
The output stage is a high speed comparator circuit with
both TTL and ECL outputs. An enable pin is included for
added control.
The Link Detect circuit provides a Link Monitor function
with a user selectable reference voltage. This circuit
monitors the peaks of the input signal and provides a
logic level output indicating when the input falls below
an acceptable level. This output can be used to disable
the quantizer and/or drive an LED, providing a visible link
status.
ML4622/ML4624 BLOCK DIAGRAM
FEATURES
s Data rates up to 40MHz or 80MBd
s Can be powered by either +5V providing TTL or raised
ECL level outputs or –5.2V providing ECL levels
s Low noise design: 25µV RMS over bandwidth
s Adjustable Link Monitor function with hystersis
s Wide 55dB input dynamic range
s Low power design
s ML4624 is pin compatible with the ML4621
APPLICATIONS
s IEEE 802.3 10BASE-FL Receiver
s IEEE 802.5 fiber optic token ring, 4 and 16mbps
s Fiber Optic Data Communications and
Telecommunications Receivers
BIAS
CF1 CF2
ECL+ ECL–
VIN+
VIN–
VDC
VREF
VTHADJ
AMP
∫
REF
THRESH
GEN
LINK DETECT
CTIMER
ECL
CMP
TTL
CMP
TTL OUT
CMP ENABLE
VCC TTL*
VCC
GND
GND TTL
TTL LINK MON
*ML4624 ONLY
1
ML4622, ML4624
PIN CONNECTIONS
ML4622
16-Pin DIP or
SOIC (Narrow)
TTL LINK MON
GND
VIN–
VIN+
VDC
CF2
CF1
GND TTL
1
2
3
4
5
6
7
8
16 CMP ENABLE
15 VTHADJ
14 VREF
13 CTIMER
12 VCC
11 TTL OUT
10 ECL+
9 ECL–
TOP VIEW
ML4624
24-Pin Narrow DIP
NC
TTL LINK MON
CMP ENABLE
VIN–
VIN+
VDC
CF2
CF1
NC
NC
NC
NC
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 16
10 15
11 14
12 13
TOP VIEW
VCC
NC
NC
CTIMER
VREF
VTHADJ
GND
TTL OUT
VCC TTL
GND TTL
ECL+
ECL–
ML4624
28-Pin PCC
CMP ENABLE TTL LINK MON
NC NC VCC NC NC
4 3 2 1 28 27 26
VIN– 5
25
VIN+ 6
24
NC 7
23
VDC
CF2
8
9
22
21
CF1 10
20
NC 11
19
12 13 14 15 16 17 18
NC
CTIMER
VREF
VTHADJ
GND
TTL OUT
VCC TTL
NC NC NC NC ECL+
ECL– GND TTL
2
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제조업체: Micro Linear
( ml )
ML4622IS data
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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