AD7380 datasheet(3/31 Pages) AD

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Data Sheet

AD7381-4

Rev. 0 | Page 3 of 31

SPECIFICATIONS

VCC = 3.0 V to3.6 V, VLOGIC = 1.65 V to 3.6 V, reference voltage (VREF) = 2.5 V, fSAMPLE = 4 MSPS, TA = −40°C to +125°C, no oversampling

enabled, unless otherwise noted.

Table 2.

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

RESOLUTION

Bits

THROUGHPUT

Conversion Rate (fSAMPLE)

MSPS

ANALOG INPUT

Voltage Range

AINx+ − AINx−

−VREF

+VREF

Absolute Input Voltage

AINx+, AINx−

−0.1

VREF + 0.1

Common-Mode Input Range

AINx+, AINx−

0.2

VREF × 0.5

VREF − 0.2

Analog Input Common-Mode Rejection Ratio

(CMRR)

fIN = 500 kHz

−76

DC Leakage Current

0.1

µA

Input Capacitance

Track mode

Hold mode

DC ACCURACY

No Missing Codes

Bits

Differential Nonlinearity (DNL) Error

−1

±0.7

LSB

Integral Nonlinearity (INL) Error

−1

±0.4

LSB

VREF = 2.5 V (internal), 2 MSPS

−1.5

±0.4

+1.5

LSB

Gain Error

−0.025

±0.006

+0.025

% FS

Gain Error Temperature Drift

−1

±0.2

ppm/°C

Gain Error Match

−0.025

±0.005

+0.025

% FS

Zero Error

−3

±0.25

LSB

Zero Error Temperature Drift

−3

±0.5

V/°C

Zero Error Match

−1. 5

±0.25

+1.5

AC ACCURACY

fIN = 1 kHz

Dynamic Range

85.4

Oversampled Dynamic Range

OSR = 4×, RES = 1 (decimal)

91.3

Signal-to-Noise Ratio (SNR)

VREF = 3.3 V, 4 MSPS

84.5

85.3

VREF = 2.5 V (internal), 2 MSPS

83.5

Rolling average OSR = 8×, RES = 1 (decimal)

90.6

fIN = 100 kHz

84.4

Spurious-Free Dynamic Range (SFDR)

−109

Total Harmonic Distortion (THD)

−110

fIN = 100 kHz

−103.2

Signal-to-Noise-and-Distortion (SINAD) Ratio

VREF = 3.3 V

84.8

83.5

84.5

Channel to Channel Isolation

−126

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