ADS5520IPAP datasheet(3/38 Pages) TI1

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ABSOLUTE MAXIMUM RATINGS

RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

ADS5520

www.ti.com....................................................................................................................................................... SBAS310F – MAY 2004 – REVISED OCTOBER 2008

over operating free-air temperature range (unless otherwise noted)

(1)

ADS5520

UNIT

AVDD to AGND, DRVDD to DRGND

–0.3 to 3.7

Supply Voltage

AGND to DRGND

±0.1

Analog input to AGND

(2) (3)

–0.3 to minimum (AVDD + 0.3, 3.6)

Logic input to DRGND

–0.3 to DRVDD

Digital data output to DRGND

–0.3 to DRVDD

Operating temperature range

–40 to 85

°C

Junction temperature

105

°C

Storage temperature range

–65 to 150

°C

(1)

Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may

degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond

those specified is not implied.

(2)

If the input signal can exceed 3.6 V, then a resistor greater than or equal to 25

Ω should be added in series with each of the analog

input pins to support input voltages up to 3.8 V. For input voltages above 3.8 V, the device can only handle transients and the duty cycle

of the overshoot should be limited to less than 5% for inputs up to 3.9 V.

(3)

The overshoot duty cycle can be defined as the ratio of the total time of overshoot to the total intended device lifetime, expressed as a

percentage. The total time of overshoot is the integrated time of all overshoot occurrences over the lifetime of the device.

PARAMETER

MIN

TYP

MAX

UNIT

Supplies

Analog supply voltage, AVDD

3.3

3.6

Output driver supply voltage, DRVDD

3.3

3.6

Analog input

Differential input range

2.3

VPP

Input common-mode voltage, VCM

(1)

1.45

1.55

1.65

Digital Output

Maximum output load

Clock Input

DLL ON

125

ADCLK input sample rate (sine wave) 1/tC

MSPS

DLL OFF

Clock amplitude, sine wave, differential(2)

VPP

Clock duty cycle(3)

50%

Open free-air temperature range

ADS5520I

–40

°C

(1)

Input common-mode should be connected to CM.

(2)

See Figure 49 for more information.

(3)

See Figure 48 for more information.

Typical values given at TA = 25°C, min and max specified over the full recommended operating temperature range, AVDD =

DRVDD = 3.3 V, sampling rate = 125 MSPS, 50% clock duty cycle, DLL On, 3-VPP differential clock, and –1dBFS differential

input, unless otherwise noted

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

Bits

Analog Inputs

Differential input range

2.3

VPP

Differential input impedance

See Figure 39

6.6

Ω

Differential input capacitance

See Figure 39

Analog input common-mode current

300

µA

(per input)

Analog input bandwidth

Source impedance = 50

Ω

750

MHz

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