AD7933 Просмотр технического описания (PDF) - Analog Devices

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AD7933

4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer

Analog Devices 

AD7933/AD7934

AD7934 SPECIFICATIONS

VDD = VDRIVE = 2.7 V to 5.25 V, internal/external VREF = 2.5 V, unless otherwise noted. fCLKIN = 25.5 MHz, fSAMPLE = 1.5 MSPS;

TA = TMIN to TMAX, unless otherwise noted.

Table 3.

Parameter

DYNAMIC PERFORMANCE

Signal-to-Noise + Distortion (SINAD)2

Signal-to-Noise Ratio (SNR)2

Total Harmonic Distortion (THD)2

Peak Harmonic or Spurious Noise (SFDR)2

Intermodulation Distortion (IMD)2

Second-Order Terms

Third-Order Terms

Channel-to-Channel Isolation

Aperture Delay2

Aperture Jitter2

Full Power Bandwidth2

DC ACCURACY

Resolution

Integral Nonlinearity2

Differential Nonlinearity 2

Differential Mode

Single-Ended Mode

Single-Ended and Pseudo Differential Input

Offset Error2

Offset Error Match2

Gain Error2

Gain Error Match2

Fully Differential Input

Positive Gain Error2

Positive Gain Error Match2

Zero-Code Error2

Zero-Code Error Match2

Negative Gain Error2

Negative Gain Error Match2

ANALOG INPUT

Single-Ended Input Range

Pseudo Differential Input Range

VIN+

VIN−

Fully Differential Input Range3

VIN+ and VIN−

VIN+ and VIN−

DC Leakage Current4

Input Capacitance

Value1

Unit

70

dB min

68

dB min

71

dB min

69

dB min

−73

dB max

−70

dB max

−73

dB max

−86

dB typ

−90

dB typ

−85

dB typ

5

ns typ

72

ps typ

50

MHz typ

10

MHz typ

12

Bits

±1

LSB max

±1.5

LSB max

±0.95

−0.95/+1.5

LSB max

LSB max

±6

LSB max

±1

LSB max

±3

LSB max

±1

LSB max

±3

LSB max

±1

LSB max

±6

LSB max

±1

LSB max

±3

LSB max

±1

LSB max

0 to VREF

0 to 2 × VREF

0 to VREF

0 to 2 × VREF

−0.3 to +0.7

−0.3 to +1.8

V

V

V

V

V typ

V typ

VCM ± VREF/2

VCM ± VREF

±1

45

10

V

V

μA max

pF typ

pF typ

Rev. B | Page 5 of 32

Test Conditions/Comments

fIN = 50 kHz sine wave

Differential mode

Single-ended mode

Differential mode

Single-ended mode

−85 dB typ, differential mode

−80 dB typ, single-ended mode

−82 dB typ

fa = 30 kHz, fb = 50 kHz

fIN = 50 kHz, fNOISE = 300 kHz

@ 3 dB

@ 0.1 dB

Differential mode

Single-ended mode

Guaranteed no missed codes to 12 bits

Guaranteed no missed codes to 12 bits

Straight binary output coding

Twos complement output coding

RANGE bit = 0

RANGE bit = 1

RANGE bit = 0

RANGE bit = 1

VDD = 3 V

VDD = 5 V

VCM = VREF/2, RANGE bit = 0

VCM = VREF, RANGE bit = 1

When in track

When in hold

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