AD7008/PCB 查看數據表（PDF） - Analog Devices

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AD7008/PCB

CMOS DDS Modulator

Analog Devices 

AD7008–SPECIFICATIONS1 (VAA = VDD = +5 V ± 5%; TA = TMIN to TMAX, RSET = 390 Ω, RLOAD = 1 Ω for

IOUT and IOUT, unless otherwise noted)

Parameter

SIGNAL DAC SPECIFICATIONS

Resolution

Update Rate (fMAX)

IOUT Full Scale

Output Compliance

DC Accuracy

Integral Nonlinearity

Differential Nonlinearity

DDS SPECIFICATIONS2

Update Rate (fMAX)

Dynamic Specifications

Signal-to-Noise

AD7008AP20

AD7008JP50

Min

Typ

Max Min

Typ

Max

10

10

20

50

20

20

1

1

+1

+1

±1

±1

20

50

50

50

Total Harmonic Distortion

–55

–53

Spurious Free Dynamic Range (SFDR)3

Narrow Band (± 50 kHz)

–70

–70

Wide Band (± 2 MHz)

–55

–55

VOLTAGE REFERENCE

Internal Reference @ +25°C4

Reference TC

VREF Overdrive5

1.2

1.27

1.35 1.2

1.27

1.35

300

300

0

2

0

2

LOGIC INPUTS

VINH, Input High Voltage

VDD–0.9

VDD–0.9

VINL, Input Low Voltage

0.9

0.9

IINH, Input Current

10

10

CIN, Input Capacitance

10

10

POWER SUPPLIES

VDD

IAA

IDD

IAA + IDD

fCLK = Max

Sleep = VDD

4.75

5.25 4.75

5.25

26

26

22 + 1.5/MHz

22 + 1.5/MHz

80

110

10

125

160

20

NOTES

1Operating temperature ranges as follows: A Version: –40°C to +85°C; J Version: 0°C to +70°C.

2All dynamic specifications are measured using IOUT. 100% Production tested.

3fCLK = 6.25 MHz, Frequency Word = 5671C71C HEX, fOUT = 2.11 MHz.

4VREF may be externally driven between 0 and VDD.

5Do not allow reference current to cause power dissipation beyond the limit of I AA + IDD shown above.

Specifications subject to change without notice.

Test Conditions/

Units Comments

Bits

MSPS

mA

Volts

LSB

LSB

MSPS

dB

fCLK = fMAX,

fOUT = 2 MHz

dB

fCLK = fMAX,

fOUT = 2 MHz

dBc

fCLK = 6.25 MHz,

fOUT = 2.11 MHz

dBc

Volts

ppm/°C

V

Volts

Volts

µA

pF

Volts

mA

mA

mA

mA

RSET = 390 Ω

–2–

REV. B

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