AD9271 datasheet(4/58 Pages) AD

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AD9271

Preliminary Technical Data

Rev. PrA | Page 4 of 58

SPECIFICATIONS

AC SPECIFICATIONS

AVDD = 1.8 V, DRVDD = 1.8 V, CWVDD = 3.3 V, 1.0 V internal ADC reference, AIN = 5 MHz, RS = 50 Ω, LNA gain = 15.6 dB (6),

unless otherwise noted.

Table 1.

AD9271-25

AD9271-40

AD9271-50

Parameter1

Conditions

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Unit

LNA

CHARACTERISTICS

Gain = 5/6/8

Single-ended

input to

differential

output

14/15.6/18

Single-ended

input to

single-ended

output

8/9.6/12

Input Voltage

Range, Gain =

5/6/8

LNA output

limited to

2 V p-p

differential

output

400/333/250

mV p-p

SE2

Input Common

Mode

1.4

Input Resistance

RFB = 200 Ω,

RFB = 400 Ω,

100

RFB = ∞

kΩ

Input Capacitance

LI-x

−3 dB Bandwidth

MHz

Input Noise

Voltage,

Gain = 5/6/8

RS = 0 Ω, RFB =

∞

1.4/1.4/1.3

1.3/1.2/1.1

nV/√Hz

1 dB Input

Compression

Point

Gain = 5/6/8

VGAIN = 0 V

782.6/649.1/508.8

mV p-p

Active

Termination

Match

Ω, RFB = 200 Ω

6.7

Unterminated

RFB = ∞

4.9

4.4

4.2

FULL-CHANNEL (TGC)

CHARACTERISTICS

AAF High-Pass

Cutoff

−3 dB

DC/350/700

kHz

AAF Low-Pass

Cutoff

−3 dB,

programmable

1/3 × fSAMPLE

(8 to 18)

1/3 × fSAMPLE

(8 to 18)

1/3 × fSAMPLE

(8 to 18)

MHz

Group Delay

Variation

f = 1 MHz to

10 MHz, gain =

0 V to 1 V

±1

Bandwidth

Tolerance

±15

Input-Referred

Noise Voltage,

LNA Gain =

5/6/8

RFB = ∞

1.7/1.6/1.5

1.6/1.4/1.3

1.6/1.4/1.2

nV/√Hz

Correlated Noise

No signal

−30

Output Offset

AAF high-pass

= 700 kHz

TBD

LSB

Signal-to-Noise

Ratio (SNR)

FIN = 5 MHz at −7

dBFS

GAIN pin = 0 V

dBFS

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