700MHz to 1200MHz High-Linearity,

SPI-Controlled DVGA with Integrated Loopback Mixer

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3

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2058

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output -1dB Compression Point

(Note 3)

19

dBm

RMS Error Vector Magnitude

EVM

0.5

%

200kHz offset

-39.2

400kHz offset

-73.5

600kHz offset

-82.7

Spurious Emissions in 30kHz

Bandwidth (Note 4)

EDGE modulation

1.2MHz offset

-85.7

dBc

Noise Figure

NF

6.8

dB

Input Return Loss

50

Ω source, minimum attenuation setting

18

dB

Output Return Loss

50

Ω load, minimum attenuation setting

20

dB

5-BIT DIGITAL ATTENUATORS

Insertion Loss

50

Ω

3.3

dB

Input Third-Order Intercept Point

IIP3

50

44

dBm

Control Range

31

dB

800MHz to 900MHz

±0.08

Attenuation Step Size Variation

vs. Frequency

900MHz to 1000MHz

±0.06

dB

800MHz to 1000MHz,

±0.002

Attenuation Variation vs.

Temperature

800MHz to 1000MHz,

±0.003

dB/°C

Step Size

1dB

Relative Step Accuracy

800MHz to 1000MHz

-0.2

+0.4

dB

Absolute Step Accuracy

800MHz to 1000MHz

-0.2

+0.5

dB

Spurious Emissions in 300kHz

Bandwidth (Note 5)

No RF input, attenuator A stepped from 0 to

2dB, 7dB to 9dB, 15dB to 17dB, 0 to 31dB,

31dB to 0dB, with attenuator B at 0dB;

attenuator B stepped from 0 to 2dB, 7dB to

9dB, 15dB to 17dB, 0 to 31dB, 31dB to

0dB, with attenuator A at 0dB

-85

dBm

Switching Speed

From chip select transitioning high to the

output settling to within 1dB of steady state

output

0.3

µs