AD9868BCPZ datasheet(5/37 Pages) AD

Numer części	AD9868BCPZ

Szczegółowy opis	Broadband Modem Mixed-Signal Front End

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Producent	AD [Analog Devices]

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AD9868

Rev. 0 | Page 4 of 36

Parameter

Temp

Test Level1

Min

Typ

Max

Unit

OSCIN Impedance

25°C

V

10||03

ΜΩ||pF

CLKOUT1 Jitter6

25°C

III

12

ps rms

CLKOUT2 Jitter7

25°C

III

6

ps rms

CLKOUT1 and CLKOUT2 Duty Cycle8

Full

III

45

55

%

1 See the Explanation of Test Levels section.

2 Gain error and gain temperature coefficients are based on the ADC only (with a fixed 1.23 V external reference and a 1 V p-p differential analog input).

3 TxDAC IOUTP_FS = 20 mA, differential output with 1:1 transformer with source and load termination of 50 Ω, fOUT = 5 MHz, 4x interpolation.

4 IOUTN full-scale current = 80 mA, fOSCIN = 80 MHz, fDAC =160 MHz, 2x interpolation.

5 Use external amplifier to drive additional load.

6 Internal VCO operates at 200 MHz; set to divide-by-1.

7 Because CLKOUT2 is a divided-down version of OSCIN, its jitter is typically equal to OSCIN.

8 CLKOUT2 is an inverted replica of OSCIN, if set to divide-by-1.

Rx PATH SPECIFICATIONS

AVDD = 3.3 V ± 5%, DVDD = CLKVDD = DRVDD = 3.3 V ± 10%, half- or full-duplex operation with CONFIG = 0 default power bias settings,

unless otherwise noted.

Table 2.

Parameter

Temp

Test Level1

Min

Typ

Max

Unit

Rx INPUT CHARACTERISTICS

Input Voltage Span

RxPGA Gain = −10 dB

Full

III

6.33

V p-p

RxPGA Gain = +48 dB

Full

III

8

mV p-p

Input Common-Mode Voltage

25°C

III

1.3

V

Differential Input Impedance

25°C

III

400||4.0

Ω||pF

Input Bandwidth with RxLPF Disabled, RxPGA = 0 dB

25°C

III

53

MHz

Input Voltage Noise Density

RxPGA Gain = 36 dB, f−3 dBF = 26 MHz

25°C

III

3.0

nV/√Hz

RxPGA Gain = 48 dB, f−3 dBF = 26 MHz

25°C

III

2.4

nV/√Hz

RxPGA CHARACTERISTICS

Minimum Gain

25°C

III

−12

dB

Maximum Gain

25°C

III

48

dB

Gain Step Size

25°C

III

1

dB

Gain Step Accuracy

25°C

III

Monotonic

dB

Gain Range Error

25°C

III

0.5

dB

RxLPF CHARACTERISTICS

Cutoff Frequency (f−3 dBF ) Range

Full

III

15

35

MHz

Attenuation at 55.2 MHz with f−3 dBF = 21 MHz

25°C

III

20

dB

Pass-Band Ripple

25°C

III

±1

dB

Settling Time

5 dB RxPGA Gain Step @ fADC = 50 MSPS

25°C

III

20

ns

60 dB RxPGA Gain Step @ fADC = 50 MSPS

25°C

III

100

ns

ADC DC CHARACTERISTICS

Resolution

N/A

10

Bits

Conversion Rate

Full

II

20

80

MSPS

Rx PATH LATENCY2

Full-Duplex Interface

Full

V

10.5

Cycles

Half-Duplex Interface

Full

V

10.0

Cycles

Rx PATH COMPOSITE AC PERFORMANCE @ fADC = 50 MSPS3

RxPGA Gain = 48 dB (Full-Scale = 8.0 mV p-p)

Signal-to-Noise and Distortion (SINAD)

25°C

III

43.7

dBc

Total Harmonic Distortion (THD)

25°C

III

−71

dBc

Podobny numer części - AD9868BCPZ

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Analog Devices	AD9868BCPZ	839Kb / 36P	Broadband Modem Mixed-Signal Front End REV. 0
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Podobny opis - AD9868BCPZ

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Analog Devices	AD9865	1Mb / 48P	Broadband Modem Mixed-Signal Front End REV. A
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