MAX3798ETJ+ Maxim Integrated Products, MAX3798ETJ+ Datasheet - Page 22

• Manufacturer Part Number: MAX3798ETJ+
• Description: IC LIMITING AMP/VCSEL DVR 32TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX3798ETJ+

• Amplifier Type: Limiting
• Number Of Circuits: 1
• Output Type: Differential
• Current - Supply: 97mA
• Voltage - Supply, Single/dual (±): 2.85 V ~ 3.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFN Exposed Pad
• Operating Temperature Range: + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• -3db Bandwidth: -
• Slew Rate: -
• Gain Bandwidth Product: -
• Current - Input Bias: -
• Voltage - Input Offset: -
• Lead Free Status / Rohs Status: Details

1.0625Gbps to 10.32Gbps, Integrated, Low-
Power SFP+ Limiting Amplifier and VCSEL Driver
Bit 3: CAZX. When CAZX is set to 0, no external capacitor is required (CAZ1 and CAZ2). When CAZX is set to 1, an
external capacitor with a minimum value of 2nF is required between CAZ1 and CAZ2.
Bit 2: GMEN. Allows faster switching between data paths.
Bit 1: MODE_SEL. MODE_SEL combined with the MSEL pin through a logic-OR function selects between the high-
gain mode (1.0625Gbps to 8.5Gbps) or high-bandwidth mode (1.0625Gbps to 10.32Gbps).
Bit 0: SLEW_RATE. Controls the slew rate of the output stage to reduce the effects of EMI at slower data rates.
Effective when MODE_SEL = 0 and MSEL = GND only.
Bit 6: LOS_EN. Controls the LOS circuitry. When RX_EN is set to 0 the LOS detector is also disabled.
Bit 5: LOS_POL. Controls the output polarity of the LOS pin.
Bit 4: RX_POL. Controls the polarity of the receiver signal path.
Bit 3: SQ_EN. When SQ_EN = 1, the LOS controls the output circuitry.
Bit #
Name
Default Value
Bit #
Name
Default Value
22
0 = no capacitor
1 = capacitor connected
0 = disabled
1 = enabled
Logic-OR output 0 = high-gain mode
Logic-OR output 1 = high-bandwidth mode
0 = 50ps
1 = 30ps
0 = disabled
1 = enabled
0 = inverse
1 = normal
0 = inverse
1 = normal
0 = disabled
1 = enabled
______________________________________________________________________________________
X
X
X
X
7
7
LOS_EN
6
1
6
X
X
LOS_POL
5
1
5
X
X
RX_POL
4
1
4
X
X
SQ_EN
CAZX
3
0
3
1
RX_EN
GMEN
Receiver Control Register 1 (RXCTRL1)
Receiver Control Register 2 (RXCTRL2)
2
1
2
1
MODE_SEL SLEW_RATE
RXDE_EN
1
0
1
0
Register Descriptions
AZ_EN
0
1
0
0
ADDRESS
ADDRESS
H0x01
H0x00