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
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DISABLE Negate Time
t_ON
Time from falling edge of DISABLE to IBIAS
and IMOD at 90% of steady state when
FAULT = 0 before reset
500
μs
FAULT Reset Time of Power-On
Time
t_INIT
Time from power-on or negation of FAULT
using DISABLE
FAULT Reset Time
t_FAULT
Time from fault to FAULT on,
CFAULT 20pF, RFAULT = 4.7k
DISABLE to Reset
Time DISABLE must be held high to reset
FAULT
OUTPUT LEVEL VOLTAGE DAC (SET_CML)
Full-Scale Voltage
VFS
100 differential resistive load
Resolution
Integral Nonlinearity
INL
5mA ICML_LEVEL 20mA
LOS THRESHOLD VOLTAGE DAC (SET_LOS)
Full-Scale Voltage
VFS
Resolution
Integral Nonlinearity
INL
11mVP-P VTH_LOS 94mVP-P
BIAS CURRENT DAC (SET_IBIAS)
Full-Scale Current
IFS
Resolution
Integral Nonlinearity
INL
1mA IBIAS 15mA
Differential Nonlinearity
DNL
1mA IBIAS 15mA, guaranteed mono-
tonic at 8-bit resolution (SET_IBIAS[8:1])
MODULATION CURRENT DAC (SET_IMOD)
Full-Scale Current
IFS
Resolution
Integral Nonlinearity
INL
Differential Nonlinearity
DNL
CONTROL I/O SPECIFICATIONS
MSEL Input Current
MSEL Input High Voltage
MSEL Input Low Voltage
MSEL Input Impedance
DISABLE Input Current
DISABLE Input High Voltage
IIH, IIL
VIH
VIL
RPULL
IIH
IIL
VIH
2mA IMOD 12mA
2mA IMOD 12mA, guaranteed mono-
tonic at 8-bit resolution (SET_IMOD[8:1])
Internal pulldown resistor
Dependency on pullup resistance
100
ms
10
μs
5
μs
1200
5
±0.9
94
1.5
±0.7
21
40
±1
±1
mVP-P
mVP-P
LSB
mVP-P
mVP-P
LSB
mA
μA
LSB
LSB
21
mA
40
μA
±1
LSB
±1
LSB
150
μA
1.8
VCC
V
0
0.8
V
40
75
110
k
12
μA
420 800
1.8
VCC
V
6 _______________________________________________________________________________________
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