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RECOMMENDED OPERATING CONDITIONS

ELECTRICAL CHARACTERISTICS

ADS5474

SLAS525 – JULY 2007

ADS5474

MIN

TYP

MAX

UNIT

SUPPLIES

AVDD5

Analog supply voltage

4.75

5

5.25

V

AVDD3

Analog supply voltage

3.1

3.3

3.6

V

DVDD3

Output driver supply voltage

3

3.3

3.6

V

ANALOG INPUT

Differential input range

2.2

VCM

Input common mode

3.1

V

DIGITAL OUTPUT (DRY, DATA, OVR)

Maximum differential output load

10

pF

CLOCK INPUT (CLK)

CLK input sample rate (sine wave)

20

400

MSPS

Clock amplitude, differential sine wave (see Figure 42)

0.5

5

Clock duty cycle (see Figure 46)

40

50

60

%

Operating free-air temperature

–40

+85

°C

sampling rate = 400 MSPS, 50% clock duty cycle, AVDD5 = 5 V, AVDD3 = 3.3 V, DVDD3 = 3.3 V, –1 dBFS differential input,

ADS5474

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

14

Bits

ANALOG INPUTS

Differential input range

2.2

Analog input common-mode voltage

Self-biased; see VCM specification below

3.1

V

Input resistance (dc)

Each input to VCM

500

Ω

Input capacitance

Each input to GND

1.8

pF

Analog input bandwidth (–3dB)

1.44

GHz

Common-mode signal < 50 MHz

CMRR

Common-mode rejection ratio

100

dB

(see Figure 27)

INTERNAL REFERENCE VOLTAGE

VREF

Reference voltage

2.4

V

With internal VREF. Provided as an output

via the VCM pin for dc-coupled

Analog input common-mode voltage

VCM

applications. If an external VREF is used,

2.9

3.1

3.3

V

reference output

the VCM pin tracks as illustrated in

Figure 39

VCM temperature coefficient

–0.8

mV/

°C

DYNAMIC ACCURACY

No missing codes

Assured

DNL

Differential linearity error

–0.99

±0.7

1.5

LSB

INL

Integral linearity error

–3

±1

3

LSB

Offset error

–11

11

mV

Offset temperature coefficient

0.02

mV/

°C

Gain error

–5

5

%FS

Gain temperature coefficient

–0.02

%FS/

°C

3

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