MAX3798 Просмотр технического описания (PDF) - Maxim Integrated
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производитель
MAX3798
Maxim Integrated
MAX3798 Datasheet PDF : 35 Pages
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1.0625Gbps to 10.32Gbps, Integrated, Low-
Power SFP+ Limiting Amplifier and VCSEL Driver
ELECTRICAL CHARACTERISTICS (continued)
(VCC = 2.85V to 3.63V, TA = -40°C to +85°C, CML receiver output load is AC-coupled to differential 100Ω, CAZ = 1nF, transmitter out-
put load is AC-coupled to differential 100Ω (see Figure 1), typical values are at +25°C, VCC = 3.3V, IBIAS = 6mA, IMOD = 6mA, unless
otherwise specified. Registers are set to default values unless otherwise noted, and the 3-wire interface is static during measure-
ments. For testing, the MODE_SEL bit was used and the MSEL pin was left open.)
PARAMETER
Random Jitter
Output Return Loss
Tx BIAS GENERATOR
Maximum Bias-On Current
Minimum Bias-On Current
BIAS Current DAC Stability
Compliance Voltage at BIAS
BIAS Current Monitor Current
Gain
Compliance Voltage at BMON
BIAS Current Monitor Current
Gain Stability
Tx SAFETY FEATURES
Excessive Voltage at BMAX
Excessive Voltage at MMAX
SYMBOL
CONDITIONS
SDD22
5mA IMOD 12mA, 250mVP-P VIN
800mVP-P
DUT is powered on, f 5GHz
DUT is powered on, f 16GHz
IBIASMAX
IBIASMIN
VBIAS
IBMON
VBMON
Current into BIAS pin
Current into BIAS pin
2mA IBIAS 15mA (Notes 2, 10)
External resistor to GND defines the
voltage gain
IBMON 2mA IBIAS 15mA (Note 10)
MIN TYP MAX UNITS
0.17
0.5 psRMS
12
dB
5
15
mA
2
mA
4
%
0.9
2.1
V
16
mA/A
0
1.8
V
5
%
VBMAX
Average voltage, FAULT always occurs for
VBMAX VCC - 0.65V, FAULT never occurs
for VBMAX VCC - 0.55V
VCC -
0.65V
VCC -
0.6V
VCC -
0.55V
V
VMMAX
Average voltage, FAULT always occurs for
VMMAX VCC - 0.65V, FAULT never occurs
for VMMAX VCC - 0.55V
VCC -
0.65V
VCC -
0.6V
VCC -
0.55V
V
Excessive Voltage at BMON
Average voltage, FAULT warning always
VBMON
occurs for VBMON VCC - 0.55V, FAULT
warning never occurs for VBMON VCC -
VCC - VCC - VCC -
0.65V 0.6V 0.55V
V
0.65V
Excessive Voltage at BIAS
Average voltage, FAULT always occurs for
VBIAS VBIAS 0.44V, FAULT never occurs for
0.44 0.48 0.65
V
VBIAS 0.65V
Maximum VCSEL Current in Off
State
SFP TIMING REQUIREMENTS
Mode-Select Change Time
IOFF
FAULT or DISABLE, VBIAS = VCC
t_MODESEL
Time from rising or falling edge at MSEL
until Rx output PWD falls below 10ps
25
μA
10
μs
DISABLE Assert Time
t_OFF
Time from rising edge of DISABLE input
signal to IBIAS = IBIASOFF and IMOD =
IMODOFF
1
μs
_______________________________________________________________________________________ 5
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