MAX3268CUB+ Maxim Integrated Products, MAX3268CUB+ Datasheet - Page 7

• Manufacturer Part Number: MAX3268CUB+
• Description: IC AMP LIMITING 1.25GBPS 10-UMAX
• Manufacturer: Maxim Integrated Products
• Type: Limiting Amplifierr

Specifications of MAX3268CUB+

• Applications: Optical Networks
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP Exposed Pad, 10-HMSOP, 10-eMSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

µMAX
7, 10
1, 4
EP
—
—
—
—
—
—
2
3
5
6
8
9
PIN
TSSOP
11, 14
_______________________________________________________________________________________
3, 6
EP
12
13
10
15
16
4
5
8
9
1
2
7
SQUELCH
Exposed
Paddle
NAME
LEVEL
OUT+
CAZ1
CAZ2
OUT-
GND
LOS
LOS
N.C.
V
IN+
IN-
TH
CC
+3.0V to +5.5V, 1.25Gbps/2.5Gbps
Supply Ground
Noninverted Input Signal
Inverted Input Signal
Loss-of-Signal Threshold. A resistor connected from this pin to ground sets the
input signal level at which the loss-of-signal (LOS) output(s) is asserted. Refer to
Typical Operating Characteristics and Design Procedure.
Inverted Loss-of-Signal Output. LOS is high when the level of the input signal is
above the preset threshold set by the TH input. LOS is asserted low when the
signal level drops below the threshold.
Supply Voltage
Inverted Data Output
Noninverted Data Output
Offset-Correction-Loop Capacitor. A capacitor connected between this pin and
CAZ2 extends the time constant of the offset correction loop.
Offset-Correction-Loop Capacitor. A capacitor connected between this pin and
CAZ1 extends the time constant of the offset correction loop. Refer to Design
Procedure.
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 approximately 20mA. (In the MAX3265CUB/MAX3765CUB, LEVEL is
internally connected to ground.)
Noninverted Loss-of-Signal Output. LOS is low when the level of the input signal
is above the preset threshold set by the TH input. LOS asserts high when the sig-
nal level drops below the threshold.
Squelch Input. The squelch function is disabled when SQUELCH is not connected
or is set to a TTL low level. When SQUELCH is set to a TTL high level and LOS is
asserted, the data outputs, OUT+, and OUT-, are forced to static levels. See sec-
tions PECL Output Buffer and CML Output Buffer for more information. (In the
MAX3265/MAX3268/MAX3269 10-pin µMAX, SQUELCH is not connected. In the
MAX3765/MAX3768, SQUELCH is internally connected to V
No Connection
Ground. The exposed paddle must be soldered to the circuit–board ground for
proper thermal performance.
Limiting Amplifiers
FUNCTION
Pin Description
CC
.)
7