AD7472AR datasheet(2/16 Pages) AD

2 / 16 page

REV. A

AD7470/AD7472

–2–

AD7470–SPECIFICATIONS1

(VDD = +2.7 V to +5.25 V

2, REF IN = 2.5 V, f

CLK IN = 30 MHz @ 5 V and 24 MHz @ 3 V;

TA = TMIN to TMAX

3, unless otherwise noted.)

Parameter

A Version

Units

Test Conditions/Comments

DYNAMIC PERFORMANCE

5 V

3 V

fS = 1.75 MSPS @ 5 V, fS = 1.5 MSPS @ 3 V

Signal to Noise + Distortion (SINAD)

dB min

fIN = 500 kHz Sine Wave

fIN = 100 kHz Sine Wave

Signal-to-Noise Ratio (SNR)

dB min

fIN = 500 kHz Sine Wave

fIN = 100 kHz Sine Wave

Total Harmonic Distortion (THD)

–83

dB typ

fIN = 500 kHz Sine Wave

–75

dB max

fIN = 100 kHz Sine Wave

Peak Harmonic or Spurious Noise (SFDR)

–85

dB typ

fIN = 500 kHz Sine Wave

–75

dB max

fIN = 100 kHz Sine Wave

Intermodulation Distortion (IMD)

Second Order Terms

–79

–75

dB typ

fIN = 500 kHz Sine Wave

–75

dB max

fIN = 100 kHz Sine Wave

Third Order Terms

–77

–75

dB typ

fIN = 500 kHz Sine Wave

–75

dB max

fIN = 100 kHz Sine Wave

Aperture Delay

ns typ

Aperture Jitter

ps typ

Full Power Bandwidth

MHz typ

DC ACCURACY

fS = 1.75 MSPS @ 5 V; fS = 1.5 MSPS @ 3 V

Resolution

Bits

Integral Nonlinearity

±1

LSB max

Differential Nonlinearity

±0.9

LSB max

Guaranteed No Missed Codes to 10 Bits

Offset Error

±2.5

LSB max

Gain Error

±1

LSB max

ANALOG INPUT

Input Voltage Ranges

0 to REF IN

DC Leakage Current

±1

µA max

Input Capacitance

pF typ

REFERENCE INPUT

REF IN Input Voltage Range

2.5

±1% for Specified Performance

DC Leakage Current

±1

µA max

Input Capacitance

10/20

pF typ

Track/Hold Mode

LOGIC INPUTS

Input High Voltage, VINH

2.4

V min

Input Low Voltage, VINL

0.4

V max

Input Current, IIN

±1

µA max

Typically 10 nA, VIN = 0 V or VDD

Input Capacitance, CIN

pF max

LOGIC OUTPUTS

Output High Voltage, VOH

VDRIVE – 0.2

V min

ISOURCE = 200

µA

Output Low Voltage, VOL

0.4

V max

ISINK = 200

µA

Floating-State Leakage Current

±10

µA max

VDD = 2.7 V to 5.25 V

Floating-State Output Capacitance

pF max

Output Coding

Straight (Natural) Binary

CONVERSION RATE

Conversion Time

CLK IN Cycles (max)

Track/Hold Acquisition Time

135

ns min

Throughput Rate

1.75

1.5

MSPS max

Conversion Time + Acquisition Time

CLK IN of 30 MHz @ 5 V and 24 MHz @ 3 V

POWER REQUIREMENTS

VDD

+2.7/+5.25

V min/max

IDD

Digital I/Ps = 0 V or DVDD

Normal Mode

2.4

mA max

VDD = 4.75 V to 5.25 V; fS = 1.75 MSPS; Typ 2 mA

Quiescent Current

900

µA max

VDD = 4.75 V to 5.25 V; fS = 1.75 MSPS

Normal Mode

1.5

mA max

VDD = 2.7 V to 3.3 V; fS = 1.5 MSPS; Typ 1.3 mA

Quiescent Current

800

µA max

VDD = 2.7 V to 3.3 V; fS = 1.5 MSPS

Sleep Mode

µA max

CLK IN = 0 V or DVDD

Power Dissipation5

Digital I/Ps = 0 V or DVDD

Normal Mode

mW max

VDD = 5 V

4.5

mW max

VDD = 3 V

Sleep Mode

µW max

VDD = 5 V; CLK IN = 0 V or DVDD

µW max

VDD = 3 V; CLK IN = 0 V or DVDD

NOTES

1Temperature ranges as follows: A Version: -40

°C to +85°C.

2The AD7470 functionally works at 2.35 V. Typical specifications @ +25

°C for SNR (100 kHz) = 59 dB; THD (100 kHz) = –84 dB; INL ±0.8 LSB.

3The AD7470 will typically maintain A-grade performance up to +125

°C, with a reduced CLK of 20 MHz @ 5 V and 16 MHz @ 3 V. Typical Sleep Mode current @ +125°C is 700 nA.

4Sample tested @ +25

°C to ensure compliance.

5See Power vs. Throughput Rate section.

Specifications subject to change without notice.

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