AD9879 datasheet(4/32 Pages) AD

4 / 32 page

AD9879

Rev. A | Page 4 of 32

SPECIFICATIONS

VAS = 3.3 V ± 5%, VDS = 3.3 V ± 10%, fOSCIN = 27 MHz, fSYSCLK = 216 MHz, fMCLK = 54 MHz (M = 8), ADC clock from OSCIN,

RSET = 4.02 kΩ, 75 Ω DAC load, unless otherwise noted.

Table 1.

Parameter

Temp

Test Level

Min

Typ

Max

Unit

OSCIN AND XTAL CHARACTERISTICS

Frequency Range

Full

MHz

Duty Cycle

Full

Input Impedance

25°C

III

100||3

MΩ||pF

MCLK Cycle to Cycle Jitter

25°C

III

ps rms

Tx DAC CHARACTERISTICS

Resolution

N/A

Bits

Maximum Sample Rate

Full

232

MHz

Full-Scale Output Current

Full

Gain Error (Using Internal Reference)

25°C

−2.0

−1.0

+2.0

% FS

Offset Error

25°C

±1.0

% FS

Reference Voltage (REFIO Level)

25°C

1.18

1.23

1.28

Differential Nonlinearity (DNL)

25°C

III

±2.5

LSB

Integral Nonlinearity (INL)

25°C

III

±8

LSB

Output Capacitance

25°C

III

Phase Noise @ 1 kHz Offset, 42 MHz

Crystal and OSCIN Multiplier Enabled at 16×

25°C

III

−110

dBc/Hz

Output Voltage Compliance Range

Full

−0.5

+1.5

Wideband SFDR

5 MHz Analog Out, IOUT = 10 mA

Full

III

60.8

66.9

dBc

65 MHz Analog Out, IOUT = 10 mA

Full

III

44.0

46.2

dBc

Narrow-band SFDR (±1 MHz Window)

5 MHz Analog Out, IOUT = 10 mA

Full

III

65.4

72.3

dBc

Tx MODULATOR CHARACTERISTICS

I/Q Offset

Full

Pass-Band Amplitude Ripple (f < fIQCLK/8)

Full

±0.1

Pass-Band Amplitude Ripple (f < fIQCLK/4)

Full

±0.5

Stop-Band Response (f > fIQCLK × 3/4)

Full

−63

Tx GAIN CONTROL

Gain Step Size

25°C

III

0.5

Gain Step Error

25°C

III

<0.05

Settling Time to 1% (Full-Scale Step)

25°C

III

1.8

µs

IQ ADC CHARACTERISTICS

Resolution1

N/A

Bits

Maximum Conversion Rate

Full

14.5

MHz

Pipeline Delay

N/A

3.5

ADC cycles

Offset Matching Between I and Q ADCs

Full

III

±4.0

LSBs

Gain Matching Between I and Q ADCs

Full

III

±2.0

LSBs

Analog Input

Input Voltage Range1

Full

III

Vppd

Input Capacitance

25°C

III

2.0

Differential Input Resistance

25°C

III

kΩ

AC Performance (AIN = 0.5 dBFS, fIN = 5 MHz)

Effective Number of Bits (ENOB)

25°C

5.00

5.8

Bits

Signal-to-Noise Ratio (SNR)

25°C

34.7

36.5

Total Harmonic Distortion (THD)

25°C

−50

−36.2

Spurious-Free Dynamic Range (SFDR)

25°C

41.3

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