MAX9972ACCS datasheet(8/22 Pages) MAXIM

8 / 22 page

Quad, Ultra-Low-Power, 300Mbps ATE

Drivers/Comparators

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +8V, VSS = -5V, VL = +3V, VCOMPHI = +1V, VCOMPLO = 0V, VLDV_ = 0V, LOAD EN LOW = LOAD EN HIGH = 0, TJ = +75°C.

All temperature coefficients measured at TJ = +50°C to +100°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLIES

Positive Supply Voltage

VDD

(Note 23)

7.6

8.4

Negative Supply Voltage

VSS

(Note 23)

-5.25

-5

-4.75

Logic Supply Voltage

2.3

3.6

Positive Supply Current

IDD

fOUT = 0MHz

120

Negative Supply Current

ISS

fOUT = 0MHz

120

Logic Supply Current

0.15

0.30

Static Power Dissipation

fOUT = 0MHz

1.3

1.5

Operating Power Dissipation

fOUT = 100Mbps (Note 24)

1.4

Note 1:

All minimum and maximum specifications are 100% production tested except driver dynamic output current and

driver/comparator propagation delays, which are guaranteed by design. All specifications are with DUT_ and PMU_ elec-

trically isolated, unless otherwise noted.

Note 2:

Nominal target value is 49.5Ω. Contact factory for alternate trim selections within the 45Ω to 55Ω range.

Note 3:

Measured at 1.5V, relative to a straight line through 0 and 3V.

Note 4:

Measured at end points, relative to a straight line through 0 and 3V.

Note 5:

DUT_ is terminated with 50Ω to ground, VDHV_ = 3V, VDLV_ = 0, VDTV_ = 1.5V, unless otherwise specified. DATA_ and

RCV_ logic levels are VHIGH = 2V, VLOW = 1V.

Note 6:

Undershoot is any reflection of the signal back towards its starting voltage after it has reached 90% of its swing. Preshoot

is any aberration in the signal before it reaches 10% of its swing.

Note 7:

At the minimum voltage swing, undershoot is less than 20%. DHV_ and DLV_ references are adjusted to result in the

specified swing.

Note 8:

At this pulse width, the output reaches at least 90% of its nominal (DC) amplitude. The pulse width is measured at DATA_.

Note 9:

With the exception of offset and gain/CMRR tests, reference input values are calibrated for offset and gain.

Note 10: Relative to a straight line through 0 and 3V.

Note 11: Unless otherwise noted, all propagation delays are measured at 40MHz, VDUT_ = 0 to 1V, VCHV_ = VCLV_ = +0.5V, tR = tF

= 500ps, ZS = 50Ω, driver in term mode with VDTV_ = +0.5V. Comparator outputs are terminated with 50Ω to GND.

Measured from VDUT_ crossing calibrated CHV_/CLV_ threshold to midpoint of nominal comparator output swing.

Note 12: Terminated is defined as driver in drive mode and set to zero volts.

Note 13: High impedance is defined as driver in high-impedance mode.

Note 14: VDUT_ = 200mVP-P. Propagation delay is compared to a reference time at 1.5V.

Note 15: The comparator meets all its timing specifications with the specified output conditions when the output current is less than

10mA, VCOMPHI > VCOMPLO, and VCOMPHI - VCOMPLO ≤ 1V. Higher voltage swings are valid but AC performance may

degrade. The maximum comparator output swing is (COMPHI - COMPLO) ≤ 1V when the output is terminated with a 50Ω

resistor to termination voltage VTERM, where COMPHI ≥ VTERM ≥ COMPLO.

Note 16: LOAD EN LOW = LOAD EN HIGH = 1.

Note 17: Waveform settles to within 5% of final value into load 100kΩ.

Note 18: IPMU_ = ±2mA at VFORCE_ = -2.2V, +1.5V, and +5.2V. Percent variation relative to value calculated at VFORCE_ = +1.5V.

Note 19: Time to return to the specified maximum leakage after a 3V, 4V/ns step at DUT_.

Note 20: Load at end of 2ns transmission line; for stability only, AC performance may be degraded.

Note 21: The driver meets all of its timing specifications over the specified digital input voltage range.

Note 22: Timing characteristics with VL = 3V.

Note 23: Specifications are simulated and characterized over the full power-supply range. Production tests are performed with

power supplies at typical values.

Note 24: All channels driven at 3VP-P, load = 2ns, 50Ω transmission line terminated with 3pF.

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