MAX3272A MAXIM [Maxim Integrated Products], MAX3272A Datasheet - Page 5

• Manufacturer Part Number: MAX3272A
• Description: +3.3V, 2.5Gbps Low-Power Limiting Amplifiers
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
6, 12, 15, 20
CC
1, 4, 17
= +3.3V, T
PIN
EP
10
11
13
14
16
18
19
2
3
5
7
8
9
A
SQUELCH
EXPOSED
OUTPOL
= +25°C, unless otherwise noted.)
LEVEL
NAME
CLOS
OUT+
CAZ2
CAZ1
OUT-
GND
PAD
V
LOS
LOS
IN+
IN-
TH
_______________________________________________________________________________________
CC
19.0
18.5
18.0
17.5
17.0
16.5
16.0
15.5
15.0
100k
COMMON-MODE REJECTION RATIO
Supply Ground
Noninverted Input Signal
Inverted Input Signal
Loss-of-Signal Threshold Pin. Resistor to ground sets the LOS threshold.
Power Supply
LO S Ti m e- C onstant C ap aci tor C onnecti on. For S ON E T ap p l i cati ons, C
Squelch Input. The squelch function is disabled when SQUELCH is not connected or set to TTL low
level. When SQUELCH is set to TTL high level and LOS is asserted, the data outputs (OUT+, OUT-)
are forced to static levels.
Noninverted Loss-of-Signal Output. LOS is asserted TTL high when the signal drops below the assert
threshold set by the TH input. The MAX3272 does not have ESD protection on this pin. The
MAX3272A has ESD protection on this pin.
Inverted Loss-of-Signal Output. LOS is asserted TTL low when the signal drops below the assert
threshold set by the TH input. The MAX3272 does not have ESD protection on this pin. The
MAX3272A has ESD protection on this pin.
Output Current Level. When this pin is not connected, the CML output current is approximately
16mA. When this pin is connected to ground, the output current increases to about 20mA.
Inverted Data Output
Noninverted Data Output
Output Polarity Control Input. Connect to GND for an inversion of polarity through the limiting
amplifier and connect to V
Offset-Correction-Loop Capacitor Connection. A capacitor connected between this pin and CAZ1
extends the time constant of the offset correction loop. Typical value of C
Offset-Correction-Loop Capacitor Connection. A capacitor connected between this pin and CAZ2
extends the time constant of the offset correction loop. Typical value of C
Connect the exposed paddle to board ground for optimal electrical and thermal performance.
vs. FREQUENCY
1M
FREQUENCY (Hz)
Typical Operating Characteristics (continued)
10M
CC
+3.3V, 2.5Gbps Low-Power
100M
for normal operation.
12
10
8
6
4
2
0
FUNCTION
0
2
R
C
LOS ASSERT AND DEASSERT LEVELS
23
TH
IN
Limiting Amplifiers
- 1 PRBS PATTERN
= 0.1µF
= 20kΩ
500
vs. DATA RATE
DATA RATE (Mbps)
1000
DEASSERT
ASSERT
1500
C L OS
2000
= 0.01µF i s r ecom m end ed .
AZ
AZ
Pin Description
is 0.1µF.
is 0.1µF.
2500
5