AD9857 datasheet(2/31 Pages) AD

Part #	AD9857

Description	CMOS 200 MSPS 14-Bit Quadrature Digital Upconverter

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Manufacturer	AD [Analog Devices]

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REV. 0

–2–

AD9857–SPECIFICATIONS

(VS = 3.3 V

5%, RSET = 1.96 k , External reference clock frequency = 10 MHz

with REFCLK Multiplier enabled at 20 ).

Test

AD9857

Parameter

Temp

Level

Min

Typ

Max

Unit

REF CLOCK INPUT CHARACTERISTICS

Frequency Range

REFCLK Multiplier Disabled

Full

VI

1

200

MHz

REFCLK Multiplier Enabled at 4

×

Full

VI

1

50

MHz

REFCLK Multiplier Enabled at 20

×

Full

VI

1

10

MHz

Input Capacitance

25

°CV

3

pF

Input Impedance

25

°C

V

100

M

Ω

Duty Cycle

25

°CV

50

%

Duty Cycle with REFCLK Multiplier Enabled,

Voltage Mode

25

°C

V

35

65

%

Duty Cycle, Current Mode

25

°CV

50

%

DAC OUTPUT CHARACTERISTICS

Resolution

14

Bits

Full-Scale Output Current

5

10

20

mA

Gain Error

25

°C

I

8.5

0

% FS

Output Offset

25

°CI

2

µA

Differential Nonlinearity

25

°C

V

1.6

LSB

Integral Nonlinearity

25

°C

V

2

LSB

Output Capacitance

25

°CV

5

pF

Residual Phase Noise @ 1 kHz Offset, 40 MHz AOUT

REFCLK Multiplier Enabled at 20

×

25

°C

V

–107

dBc/Hz

REFCLK Multiplier at 4

×

25

°C

V

–123

dBc/Hz

REFCLK Multiplier Disabled

25

°C

V

–145

dBc/Hz

Voltage Compliance Range

25

°C

I

–0.5

+1.0

V

Wideband SFDR

1 MHz–20 MHz Analog Out

25

°C

V

–75

dBc

20 MHz–40 MHz Analog Out

25

°C

V

–65

dBc

40 MHz–60 MHz Analog Out

25

°C

V

–62

dBc

60 MHz–80 MHz Analog Out

25

°C

V

–60

dBc

Narrowband SFDR

10 MHz Analog Out (

±1 MHz)

25

°C

V

–87

dBc

10 MHz Analog Out (

±250 kHz)

25

°C

V

–88

dBc

10 MHz Analog Out (

±50 kHz)

25

°C

V

–92

dBc

10 MHz Analog Out (

±10 kHz)

25

°C

V

–94

dBc

65 MHz Analog Out (

±1 MHz)

25

°C

V

–86

dBc

65 MHz Analog Out (

±250 kHz)

25

°C

V

–86

dBc

65 MHz Analog Out (

±50 kHz)

25

°C

V

–86

dBc

65 MHz Analog Out (

±10 kHz)

25

°C

V

–88

dBc

80 MHz Analog Out (

±1 MHz)

25

°C

V

–85

dBc

80 MHz Analog Out (

±250 kHz)

25

°C

V

–85

dBc

80 MHz Analog Out (

±50 kHz)

25

°C

V

–85

dBc

80 MHz Analog Out (

±10 kHz)

25

°C

V

–86

dBc

MODULATOR CHARACTERISTICS (65 MHz AOUT)

(Input Data: 2.5 MS/s, QPSK, 4

× Oversampled,

INV SINC ON, INV CIC ON))

I/Q Offset

25

°CIV

55

65

dB

Error Vector Magnitude

25

°C

IV

0.4

1

%

INVERSE SINC FILTER (Variation in Gain from

DC to 80 MHz, Inverse SINC Filter ON

25

°CV

±0.1

dB

SPURIOUS POWER (Off Channel, Measured in

Equivalent Bandwidth), Full-Scale Output

6.4 MHz Bandwidth

25

°C

IV

–65

dBc

3.2 MHz Bandwidth

25

°C

IV

–67

dBc

1.6 MHz Bandwidth

25

°C

IV

–69

dBc

0.8 MHz Bandwidth

25

°C

IV

–69

dBc

0.4 MHz Bandwidth

25

°C

IV

–70

dBc

0.2 MHz Bandwidth

25

°C

IV

–72

dBc

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