REV. 0

–2–

AD9870–SPECIFICATIONS

Parameter

Min

Typ

Max

Unit

OVERALL

Analog Supply Voltage

(VDDA, VDDF, VDDI)

2.7

3.0

3.6

V

Digital Supply Voltage

(VDDD, VDDC, VDDL)

2.7

3.0

3.6

V

Interface Supply Voltage

(VDDH)

1.8

3.6

V

Charge Pump Supply Voltage

(VDDP, VDDQ)

2.7

3.0

5.5

V

Total Current

High IIP3 Setting

42

50.6

mA

SSB Noise Figure @ Max VGA Gain

High IIP3 Setting

12

dB

Low IIP3 Setting

12

dB

Input Third-Order Intercept (IIP3)

High IIP3 Setting

–5

–1

dBm

Low IIP3 Setting

–10

dBm

Input Impedance

360

Ω

Gain Variation Over Temperature

0.6

dB

PREAMP + MIXER

Maximum Input and LO Frequencies

300

MHz

LO SYNTHESIZER

LO Input Frequency

7.75

300

MHz

LO Input Amplitude

0.3

1.0

V p-p

FREF (Reference) Frequency

0.1

25

MHz

FREF Input Amplitude

0.3

3

V p-p

Minimum Charge Pump Output Current

Programmable in 0.625 mA Steps

0.625

mA

Maximum Charge Pump Output Current

Programmable in 0.625 mA Steps

5.000

mA

Charge Pump Output Compliance Voltage

2

0.25

VDDP – 0.25

V

Synthesizer Resolution

6.25

kHz

CLOCK SYNTHESIZER

CLK Input Frequency

13

18

MHz

CLK Input Amplitude

Clock VCO Off

0.3

V p-p

Minimum Charge Pump Output Current

Programmable in 0.625 mA Steps

0.625

mA

Maximum Charge Pump Output Current

Programmable in 0.625 mA Steps

5.000

mA

Charge Pump Output Compliance Voltage

2

0.25

VDDQ – 0.25

V

Synthesizer Resolution

2.2

kHz

SIGMA-DELTA ADC

Resolution

16

Bits

13

18

MHz

Center Frequency

MHz

Dynamic Range

BW = 10 kHz

88

dB

Passband Gain Variation

0.5

dB

DECIMATOR

Decimation Factor

Programmable in Steps of 60

60

960

Passband Width

50

%

Passband Gain Variation

1dB

Alias Attenuation

85

dB

GAIN CONTROL

Programmable Gain Step

16

dB

AGC Gain Range (Continuous)

18

25

60

dB

AGC Attack Time

Programmable

40

7000

µs

SPI

PC Clock Frequency

10

MHz

PD Hold Time

10

ns

SSI

CLKOUT Frequency

1

18

MHz

Output Rise/Fall Time

CMOS Output Mode, Drive Strength = 0

120

ns

CMOS Output Mode, Drive Strength = 1

45

ns

CMOS Output Mode, Drive Strength = 2

16

ns

CMOS Output Mode, Drive Strength = 3

10

ns

OPERATING TEMPERATURE RANGE

Basic Functions

–40

+95

°C

Meets All Specifications

–40

+85

°C

NOTES

Specifications subject to change without notice.

(VDDI = VDDF = VDDA = 3.3 V, VDDC = VDDL = 3.3 V, VDDD = VDDH = 3.3 V, VDDQ =