VA

AGND

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ADC12C080

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SNAS379C – SEPTEMBER 2006 – REVISED APRIL 2013

ADC12C080 Timing and AC Characteristics

Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.0V, VDR = +2.5V, Internal VREF

= +1.2V, fCLK = 80 MHz, 50% Duty Cycle, DCS Disabled, VCM = VCMO, CL = 5 pF/pin. Typical values are for TA = 25°C. Timing

measurements are taken at 50% of the signal amplitude. Boldface limits apply for TMIN ≤ TA ≤ TMAX. All other limits apply for

TA = 25°C

(1) (2)

Units

Symb

Parameter

Conditions

Typical (3)

Limits

(Limits)

Maximum Clock Frequency

80

MHz (max)

Minimum Clock Frequency

20

MHz (min)

tCH

Clock High Time

6

ns

tCL

Clock Low Time

6

ns

tCONV

Conversion Latency

7

Clock Cycles

3

ns (min)

tOD

Output Delay of CLK to DATA

Relative to rising edge of CLK(4)

5.5

7.3

ns(max)

tSU

Data Output Setup Time

Relative to DRDY

6.5

5.5

ns (min)

tH

Data Output Hold Time

Relative to DRDY

6

5

ns (min)

tAD

Aperture Delay

0.6

ns

tAJ

Aperture Jitter

0.1

ps rms

(1)

The inputs are protected as shown below. Input voltage magnitudes above VA or below GND will not damage this device, provided

current is limited per Note 4 under Absolute Maximum Ratings. However, errors in the A/D conversion can occur if the input goes above

2.6V or below GND as described in the Operating Ratings section.

(2)

With a full scale differential input of 2VP-P , the 12-bit LSB is 488 µV.

(3)

Typical figures are at TA = 25°C and represent most likely parametric norms at the time of product characterization. The typical

specifications are not ensured.

(4)

This parameter is specified by design and/or characterization and is not tested in production.

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