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參數(shù)資料
| 型號： | MAX3272AETP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP LIMITING 20-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 限幅放大器 |
| 應(yīng)用： | 光纖學(xué)網(wǎng)絡(luò) |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-TQFN-EP（4x4） |
| 包裝： | 帶卷 (TR) |
Applications Information
Optical Hysteresis
In an optical receiver, the electrical power change at the
limiting amplifier is 2 times the optical power change.
As an example, if a receiver’s optical input power (x)
increases by a factor of two, and the preamplifier is lin-
ear, then the voltage input to the limiting amplifier also
increases by a factor of two.
The optical power change is 10log(2x / x) = 10log(2) =
+3dB.
At the limiting amplifier, the electrical power change is:
The MAX3272 typical voltage hysteresis is 3.3dB. This
provides an optical hysteresis of 1.65dB.
10log
2V
/ R
V/ R
10log(2 )
20log(2)
6dB
IN
2
IN
2
IN
2
()
==
= +
MAX3272/MAX3272A
+3.3V, 2.5Gbps Low-Power
Limiting Amplifiers
_______________________________________________________________________________________
9
1
2
3
4
5
15
14
13
12
11
20
19
18
17
16
67
8
9
10
GND
IN+
IN-
GND
NOTE: EXPOSED PAD MUST BE CONNECTED TO SUPPLY GROUND.
TH
VCC
OUT+
OUT-
VCC
LEVEL
V
CC
CAZ1
CAZ2
GND
OUTPOL
V
CC
CLOS
SQUELCH
LOS
TOP VIEW
QFN*
MAX3272/
MAX3272A
1
2
3
4
5
15
14
13
12
11
20
19
18
17
16
67
8
9
10
GND
IN+
IN-
GND
NOTE: EXPOSED PAD MUST BE CONNECTED TO SUPPLY GROUND.
TH
VCC
OUT+
OUT-
VCC
LEVEL
V
CC
CAZ1
CAZ2
GND
OUTPOL
V
CC
CLOS
SQUELCH
LOS
THIN QFN*
MAX3272A
+
Pin Configuration
Pad Coordinates
PAD
NAME
COORDINATES (m)
1
GND
47, 836
2
IN+
47, 603
3
IN-
47, 425
4
GND
47, 237
5TH
47, 47
6VCC
255, -154
7
CLOS
436, -154
8
SQUELCH
645, -154
9
LOS
850, -154
10
LOS
1063, -154
11
LEVEL
1331, 37
12
VCC
1331, 212
13
OUT-
1331, 421
14
OUT+
1331, 573
15
VCC
1331, 780
16
OUTPOL
1119, 1042
17
GND
957, 1042
18
CAZ2
773, 1042
19
CAZ1
583, 1042
20
N.C.
422, 1042
21
VCC
268, 1042
Coordinates are for the center of the pad.
Coordinate 0, 0 is the lower left corner of the passivation open-
ing for pad 5.
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