ADS5474IPFPR datasheet(7/41 Pages) TI1

7 / 41 page

ADS5474

www.ti.com

SLAS525C – JULY 2007 – REVISED JANUARY 2016

6.4 Thermal Information

ADS5474

THERMAL METRIC(1)

PFP (HTQFP)

UNIT

80 PINS

RθJA

Junction-to-ambient thermal resistance

25.9

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

7.6

°C/W

RθJB

Junction-to-board thermal resistance

9.8

°C/W

ψJT

Junction-to-top characterization parameter

0.2

°C/W

ψJB

Junction-to-board characterization parameter

9.7

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

0.2

°C/W

(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

6.5 Electrical Characteristics

Typical values at TA = 25°C: minimum and maximum values over full temperature range TMIN = –40°C to TMAX = 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,

and 3-VPP differential clock, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

Bits

ANALOG INPUTS

Differential input range

2.2

VPP

Analog input common-mode voltage

Self-biased; see VCM specification below

3.1

Input resistance (dc)

Each input to VCM

500

Ω

Input capacitance

Each input to GND

2.3

Analog input bandwidth (–3dB)

1.44

GHz

Common-mode signal < 50 MHz

CMRR

Common-mode rejection ratio

100

(see Figure 27)

INTERNAL REFERENCE VOLTAGE

VREF

Reference voltage

2.4

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

reference output

the VCM pin tracks as illustrated in

Figure 42

VCM temperature coefficient

–0.8

mV/°C

DYNAMIC ACCURACY

No missing codes

Assured

DNL

Differential linearity error

fIN = 70 MHz

–0.99

±0.7

1.5

LSB

INL

Integral linearity error

fIN = 70 MHz

–3

±1

LSB

Offset error

–11

Offset temperature coefficient

0.02

mV/°C

Gain error

–5

%FS

Gain temperature coefficient

–0.02

%FS/°C

POWER SUPPLY

VIN = full-scale, fIN = 70 MHz,

338

372

IAVDD5

5-V analog supply current

fS = 400 MSPS

VIN = full-scale, fIN = 70 MHz,

IAVDD3

3.3-V analog supply current

185

201

fS = 400 MSPS

3.3-V digital supply current

VIN = full-scale, fIN = 70 MHz,

IDVDD3

(includes LVDS)

fS = 400 MSPS

Total power dissipation

2.5

2.797

Power-up time

From turn-on of AVDD5

μs

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