AD7265 데이터 시트보기 (PDF) - Analog Devices

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AD7265

Differential/Single-Ended Input, Dual 1 MSPS, 12-Bit, 3-Channel SAR ADC

Analog Devices 

AD7265

SPECIFICATIONS

TA = TMIN to TMAX, VDD = 2.7 V to 5.25 V, fSCLK = 16 MHz, fS = 1 MSPS, VDRIVE = 2.7 V to 5.25 V; specifications apply using internal

reference or external reference = 2.5 V ± 1%, unless otherwise noted.1

Table 1.

Parameter

DYNAMIC PERFORMANCE

Signal-to-Noise Ratio (SNR)2

Specification

71

69

Signal-to-Noise + Distortion Ratio (SINAD)2 70

68

Total Harmonic Distortion (THD)2

–77

–73

Spurious-Free Dynamic Range (SFDR)2

Intermodulation Distortion (IMD)2

Second-Order Terms

Third-Order Terms

Channel-to-Channel Isolation

SAMPLE AND HOLD

Aperture Delay3

Aperture Jitter3

Aperture Delay Matching3

Full Power Bandwidth

DC ACCURACY

Resolution

Integral Nonlinearity2

–75

–88

–88

–88

11

50

200

33/26

3.5/3

12

±1

±1.5

Differential Nonlinearity2,4

Straight Binary Output Coding

Offset Error

Offset Error Match

Gain Error

Gain Error Match

Twos Complement Output Coding

Positive Gain Error

Positive Gain Error Match

Zero Code Error

Zero Code Error Match

Negative Gain Error

Negative Gain Error Match

ANALOG INPUT5

T

Single-Ended Input Range

Pseudo Differential Input Range: VIN+ − VIN−6

Fully Differential Input Range: VIN+ and VIN−

VIN+ and VIN−

±0.99

−0.99/+1.5

±6

±2

±2.5

±0.5

±2

±0.5

±5

±1

±2

±0.5

0 V to VREF

0 V to 2 × VREF

0 to VREF

2 × VREF

VCM ± VREF/2

VCM ± VREF

Unit

dB min

dB min

dB min

dB min

dB max

dB max

dB max

dB typ

dB typ

dB typ

ns max

ps typ

ps max

MHz typ

MHz typ

Bits

LSB max

LSB max

LSB max

LSB max

LSB max

LSB typ

LSB max

LSB typ

LSB max

LSB typ

LSB max

LSB typ

LSB max

LSB typ

V

V

V

V

V

Test Conditions/Comments

fIN = 50 kHz sine wave; differential mode

fIN = 50 kHz sine wave; single-ended and

pseudo differential modes

fIN = 50 kHz sine wave; differential mode

fIN = 50 kHz sine wave; single-ended and

pseudo differential modes

fIN = 50 kHz sine wave; differential mode

fIN = 50 kHz sine wave; single-ended and

pseudo differential modes

fIN = 50 kHz sine wave

fa = 30 kHz, fb = 50 kHz

@ 3 dB, VDD = 5 V/VDD = 3 V

@ 0.1 dB, VDD = 5 V/VDD = 3 V

±0.5 LSB typ; differential mode

±0.5 LSB typ; single-ended and pseudo

differential modes

Differential mode

Single-ended and pseudo differential modes

RANGE pin low

RANGE pin high

RANGE pin low

RANGE pin high

VCM = common-mode voltage7 = VREF/2

VCM = VREF

Rev. A | Page 3 of 28

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