AD7450ABRMZ(2015) データシートの表示（PDF） - Analog Devices

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AD7450ABRMZ
(Rev.:2015)

Differential Input, 1 MSPS 10-Bit and 12-Bit ADCs in an 8-Lead SOT-23

Analog Devices 

Data Sheet

AD7440/AD7450A

AD7450A–SPECIFICATIONS

Table 2. VDD = 2.7 V to 3.6 V, fSCLK = 18 MHz, fS = 1 MSPS, VREF = 2.0 V; VDD = 4.75 V to 5.25 V, fSCLK = 18 MHz, fS = 1 MSPS,

VREF = 2.5 V; VCM1 = VREF; TA = TMIN to TMAX, unless otherwise noted. Temperature range for B Version: –40°C to +85°C.

Parameter

Test Conditions/Comments

B Version

Unit

DYNAMIC PERFORMANCE

Signal-to-(Noise + Distortion) (SINAD)2

fIN = 100 kHz

70

dB min

Total Harmonic Distortion (THD)2

VDD = 4.75 V to 5.25 V, –86 dB typ

–76

VDD = 2.7 V to 3.6 V, –84 dB typ

–74

Peak Harmonic or Spurious Noise2

VDD = 4.75 V to 5.25 V, –86 dB typ

–76

VDD = 2.7 V to 3.6 V, –84 dB typ

–74

Intermodulation Distortion (IMD)2

fa = 90 kHz, fb = 110 kHz

dB max

dB max

dB max

dB max

Second-Order Terms

–89

dB typ

Third-Order Terms

Aperture Delay2

–89

dB typ

5

ns typ

Aperture Jitter2

Full Power Bandwidth2, 3

@ –3 dB

50

ps typ

20

MHz typ

@ –0.1 dB

2.5

MHz typ

DC ACCURACY

Resolution

Integral Nonlinearity (INL)2

12

Bits

±1

LSB max

Differential Nonlinearity (DNL)2

Guaranteed no missed codes to 12 bits

±0.95

LSB max

Zero-Code Error2

±6

LSB max

Positive Gain Error2

Negative Gain Error2

±2

LSB max

±2

LSB max

ANALOG INPUT

Full-Scale Input Span

Absolute Input Voltage

2 × VREF 4

VIN+ – VIN–

V

VIN+

VIN–

DC Leakage Current

VCM = VREF

VCM = VREF

VCM ± VREF/2

VCM ± VREF/2

±1

V

V

µA max

Input Capacitance

When in track-and-hold

30/10

pF typ

REFERENCE INPUT

VREF Input Voltage

VDD = 4.75 V to 5.25 V

2.55

V

(±1% tolerance for specified performance)

VDD = 2.7 V to 3.6 V

2.06

V

(±1% tolerance for specified performance)

DC Leakage Current

±1

µA max

VREF Input Capacitance

LOGIC INPUTS

When in track-and-hold

10/30

pF typ

Input High Voltage, VINH

Input Low Voltage, VINL

Input Current, IIN

Input Capacitance, CIN7

LOGIC OUTPUTS

2.4

0.8

Typically 10 nA, VIN = 0 V or VDD

±1

10

V min

V max

µA max

pF max

Output High Voltage, VOH

Output Low Voltage, VOL

Floating-State Leakage Current

VDD = 4.75 V to 5.25 V; ISOURCE = 200 µA

2.8

VDD = 2.7 V to 3.6 V; ISOURCE = 200 µA

2.4

ISINK = 200 µA

0.4

±1

V min

V min

V max

µA max

Floating-State Output Capacitance7

10

pF max

Output Coding

Twos complement

Rev. D | Page 5 of 27

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