AD9877 datasheet(5/36 Pages) AD

Part #	AD9877

Description	Mixed-Signal Front End Set-Top Box, Cable Modem

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Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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5 / 36 page

AD9877

Rev. B | Page 5 of 36

Parameter

Temp

Test

Level

Min

Typ

Max

Unit

Dynamic Performance (AIN = −0.5 dBFS, f = 5 MHz)

Signal-to-Noise and Distortion (SINAD)

25°C

I

40.8

47.3

dB

Effective Number of Bits (ENOB)

25°C

I

6.5

7.6

Bits

Total Harmonic Distortion (THD)

25°C

I

−60.1

−50.0

dB

Spurious-Free Dynamic Range (SFDR)

25°C

I

52.0

63.0

dB

Reference Voltage Error

REFT8 to REFB8 (0.5 V)

25°C

I

−100

±10

+100

mV

12-BIT ADC CHARACTERISTICS

Resolution

N/A

12

Bits

Conversion Rate

Full

II

33

MHz

Pipeline Delay

N/A

5.5

ADC cycles

Analog Input

Input Voltage Range

Full

III

2

Vppd

Differential Input Impedance

25°C

III

4||2

kΩ||pF

Aperture Delay

25°C

III

2.0

ns

Aperture Uncertainty (Jitter)

25°C

III

1.2

ps rms

Full-Power Bandwidth

25°C

III

85

MHz

Input Referred Noise

25°C

III

75

μV

Reference Voltage Error

REFT12 to REFB12 (1 V)

25°C

I

−200

±16

±200

mV

Dynamic Performance (AIN = −0.5 dBFS, f = 5 MHz)

ADC Sample Clock = OSCIN

Signal-to-Noise and Distortion (SINAD)

Full

II

63.2

65.9

dB

Effective Number of Bits (ENOBs)

Full

II

10.2

10.7

Bits

Signal-to-Noise Ratio (SNR)

Full

II

63.7

66.2

dB

Total Harmonic Distortion (THD)

Full

II

−79.1

−68.3

dB

Spurious-Free Dynamic Range (SFDR)

Full

II

72.5

79.3

dB

ADC Sample Clock = PLL

Signal-to-Noise and Distortion (SINAD)

Full

II

62.0

64.6

dB

Effective Number of Bits (ENOBs)

Full

II

10.0

10.4

Bits

Signal-to-Noise Ratio (SNR)

Full

II

62.5

64.8

dB

Total Harmonic Distortion (THD)

Full

II

−78

−67.8

dB

Spurious-Free Dynamic Range (SFDR)

Full

II

71.0

78.9

dB

Dynamic Performance (AIN = −0.5 dBFS, f = 50 MHz)

ADC Sample Clock = OSCIN

Signal-to-Noise and Distortion (SINAD)

Full

II

61.1

63.1

dB

Effective Number of Bits (ENOB)

Full

II

9.9

10.2

Bits

Signal-to-Noise Ratio (SNR)

Full

II

61.5

63.3

dB

Total Harmonic Distortion (THD)

Full

II

−77

−67.9

dB

Spurious-Free Dynamic Range (SFDR)

Full

II

69.9

79.6

dB

Differential Phase

25°C

III

<0.1

Degrees

Differential Gain

25°C

III

<1

LSB

CHANNEL-TO-CHANNEL ISOLATION

Tx DAC-to-ADC Isolation (5 MHz Analog Output)

Isolation Between Tx and 8-Bit ADCs

25°C

III

80

dB

Isolation Between Tx and 12-Bit ADCs

25°C

III

90

dB

ADC-to-ADC Isolation

(AIN = −0.5 dBFS, f = 5 MHz)

Isolation Between I/Q in and IF12

25°C

III

70

dB

Isolation Between Q and I Inputs

25°C

III

65

dB

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