ADF4207BRU datasheet(3/20 Pages) AD

Part #	ADF4207BRU

Description	Dual RF PLL Frequency Synthesizers

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REV. 0

–3–

ADF4206/ADF4207/ADF4208

Parameter

B Version

B Chips

2

Unit

Test Conditions/Comments

NOISE CHARACTERISTICS

Phase Noise Floor (RF1)

7

ADF4206

–169

dBc/Hz typ

@ 25 kHz PFD Frequency

ADF4207

–171

dBc/Hz typ

@ 25 kHz PFD Frequency

ADF4208

–173

dBc/Hz typ

@ 25 kHz PFD Frequency

ADF4206

–160

dBc/Hz typ

@ 200 kHz PFD Frequency

ADF4207

–162

dBc/Hz typ

@ 200 kHz PFD Frequency

ADF4208

–164

dBc/Hz typ

@ 200 kHz PFD Frequency

Phase Noise Performance

8

@ VCO Output

ADF4206 (RF1, RF2)

–92

dBc/Hz typ

@ 540 MHz Output, 200 kHz at PFD

ADF4207 (RF1, RF2)

–90

dBc/Hz typ

@ 900 MHz Output, 200 kHz at PFD

ADF4207 (RF1, RF2)

9

–81

dBc/Hz typ

@ 836 MHz, 30 kHz at PFD

ADF4208 (RF1)

–85

dBc/Hz typ

@ 1750 MHz Output, 200 kHz at PFD

ADF4208 (RF1)

–91

dBc/Hz typ

@ 900 MHz Output, 200 kHz at PFD

ADF4208 (RF1)

10

–66

dBc/Hz typ

@ 1750 MHz Output, 200 kHz at PFD

ADF4208 (RF2)

–89

dBc/Hz typ

@ 900 MHz Output, 200 kHz at PFD

Spurious Signals

RF1, RF2 (20 kHz Loop B/W)

–80/–84

dB typ

@ 200 kHz/400 kHz and 200 kHz PFD

RF1, RF2 (1 kHz Loop B/W)

–65/–73

dB typ

@10 kHz/20 kHz and 10 kHz PFD

NOTES

1Operating temperature range is as follows: B Version: –40

°C to +85°C.

2The B Chip speciﬁcations are given as typical values.

3This is the maximum operating frequency of the CMOS counters. The prescaler value should be chosen to ensure that the RF input is divided down to a frequency that is

less than this value.

4V

DD1 = VDD2 = 3 V; For VDD1 = VDD2 = 5 V, use CMOS-compatible levels.

5Guaranteed by design. Sample tested to ensure compliance.

6Typical values apply for V

DD = 3 V; P = 32; RF1IN1/RF2IN2 for ADF4206 = 540 MHz; RF1IN1/RF2IN2 for ADF4207 = 900 MHz; RF1IN1/RF2IN2 for ADF4208 = 900 MHz.

7The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20 logN (where N is the N divider value).

8The phase noise is measured at a 1 kHz unless otherwise noted. The phase noise is measured with the EVAL-ADF4206/ADF4207EB or the EVAL-AD4208EB Evaluation

Board and the HP8562E Spectrum Analyzer. The spectrum analyzer provides the REFIN for the synthesizer (fREFOUT = 10 MHz @ 0 dBm).

9f

REFIN = 10 MHz; fPFD = 30 kHz; Offset Frequency = 300 Hz; fRF/IF = 836 MHz; N = 27866; Loop B/W = 3 kHz.

10f

REFIN = 10 MHz; fPFD = 10 kHz; Offset Frequency = 200 Hz; fRF = 1750 MHz; N = 175000; Loop B/W = 1 kHz.

Speciﬁcations subject to change without notice.

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