MAX3272 Просмотр технического описания (PDF) - Maxim Integrated
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MAX3272 Datasheet PDF : 14 Pages
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+3.3V, 2.5Gbps Low-Power
Limiting Amplifiers
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +3.6V, TA = -40°C to +85°C. Typical values are at VCC = +3.3V and TA = +25°C, unless otherwise noted.)
PARAMETER
High LOS Deassert Level
LOS Output High Voltage
LOS Output Low Voltage
Squelch Input Current
SYMBOL
CONDITIONS
RTH = 80Ω (Notes 3, 10)
Sinking 30µA
Sourcing 1.2mA
MIN TYP MAX UNITS
73
124.7 mVP-P
2.4
V
0.4
V
400
µA
Note 1: Dice are designed and guaranteed from -40°C to +85°C but are tested only at TA = +25°C.
Note 2: Supply current measurement excludes the current of the CML output stage (16mA typical). See Figure 1, Power-Supply
Current Measurement.
Note 3: Guaranteed by design and characterization.
Note 4: Input edge speed is controlled using 4-pole, lowpass Bessel filters with bandwidth approximately 75% of the maximum
data rate.
Note 5: Deterministic jitter is measured with a K28.5 pattern (0011 1110 1011 0000 0101). Deterministic jitter is the peak-to-peak
deviation from ideal time crossings, measured at the zero-level crossings of the differential output per ANSI X3.230, Annex A.
Note 6: Random jitter is measured with the minimum input signal. For Fibre Channel and Gigabit Ethernet applications, the peak-
to-peak random jitter is 14.1 times the RMS random jitter.
Note 7: Power-supply noise rejection (PSNR) is calculated by the equation PSNR = 20log (∆VCC/(∆VOUT)), where ∆VOUT is the
change in differential output voltage due to the power-supply noise, ∆VCC. See Power-Supply Noise Rejection vs.
Frequency in the Typical Operating Characteristics.
Note 8: Hysteresis is defined as: 20 ✕ log(VLOS-DEASSERT/VLOS-ASSERT).
Note 9: Response time to a 10dB change in input power. For the specification guaranteed, the power is assumed to switch back
and forth between two levels (separated by 10dB and equidistant from assert and deassert levels) outside of the two
hysteresis thresholds.
Note 10: All power-detect AC parameters are guaranteed with a 223 - 1 PRBS, 2.5Gbps input, with the longest possible run of 80CID.
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
1000
950
900
850
800
750
700
650
600
0
OUTPUT AMPLITUDE
vs. INPUT AMPLITUDE
LEVEL = GND
LEVEL = OPEN
10
20
30
40
50
VIN (mVP-P)
SUPPLY CURRENT
vs. AMBIENT TEMPERATURE
70
65
60
55
50
45
40
35
30
25
20
-40 -15
10
35
60
85
AMBIENT TEMPERATURE (°C)
DETERMINISTIC JITTER
vs. INPUT AMPLITUDE
20
18
16
14
12
10
8
6
4
2
0
1
10
100
1000 10,000
INPUT AMPLITUDE (mVP-P)
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