ADS5484

ADS5485

RECOMMENDED OPERATING CONDITIONS

ADS5484, ADS5485

UNIT

MIN

NOM

MAX

SUPPLIES

AVDD5

Analog supply voltage

4.75

5

5.25

V

AVDD3

Analog supply voltage

3.15

3.3

3.45

V

DVDD3

Output driver supply voltage

3

3.3

3.6

V

ANALOG INPUT

Differential input voltage range

3

VCM

Input common-mode voltage

3.1

V

DIGITAL OUTPUT (DRY, DATA)

Maximum differential output load (parasitic or intentional)

5

pF

Differential output resistance

100

Ω

CLOCK INPUT (CLK)

Max

CLK input sample rate (sine wave)

10

Rated

MSPS

Clock

Clock amplitude, differential sine wave (see Figure 39)

1.5

5

Clock duty cycle (see Figure 44)

45%

50%

55%

Operating free-air temperature

–40

+85

°C

ELECTRICAL CHARACTERISTICS (ADS5484, ADS5485)

sampling rate = max rated, 50% clock duty cycle, AVDD5 = 5 V, AVDD3 = 3.3 V, DVDD3 = 3.3 V, –1 dBFS differential input,

ADS5484

ADS5485

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

Clock rate

170

200

MSPS

Resolution

16

16

Bits

ANALOG INPUTS

Differential input voltage range

3

3

Self-biased; see VCM

Analog input common-mode voltage

3.1

3.1

V

specification below

Input resistance (dc)

Each input to VCM

1000

1000

Ω

Each input to GND (unsoldered

Input capacitance

3.5

3.5

pF

package)

Analog input bandwidth (–3dB)

730

730

MHz

Common-mode signal

CMRR

Common-mode rejection ratio

65

65

dB

70 MHz (see Figure 26)

INTERNAL REFERENCE VOLTAGE

VREF

Reference voltage

1.2

1.2

V

Analog input common-mode voltage

VCM

With internal voltage reference

2.9

3.1

3.3

2.9

3.1

3.3

V

reference output

VCM temperature coefficient

-1

-1

mV/°C

4

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