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MAX2058

700MHz to 1200MHz High-Linearity, SPI-Controlled DVGA with Integrated Loopback Mixer

Maxim Integrated 

700MHz to 1200MHz High-Linearity,

SPI-Controlled DVGA with Integrated Loopback Mixer

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2058 Typical Application Circuit, VCC = +4.75V to +5.25V, digital attenuators set for maximum gain, 700MHz ≤ fRF ≤ 1200MHz,

40MHz ≤ fLO ≤ 100MHz, TC = -40°C to +85°C. Typical values are at VCC = 5.0V, PIN = 0dBm, fRF = 940MHz, PLO = -6dBm, fLO =

45MHz, fLBOUT = fRF - fLO, and TC = +25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

LOOPBACK MIXER

LO Frequency (Note 2)

LO Input Power

Output Power (Note 6)

Gain Accuracy

fLO

40

100 MHz

PLO

-6

0

dBm

PIN = +5dBm, fRF = 940MHz, TC = +25°C

-14.7 -12.7 -10.8 dBm

PIN = +5dBm, TC 800MHz to 900MHz

±1.7

dB

= -40°C to +25°C 900MHz to 1000MHz

±1.7

Output Third-Order Intercept

OIP3 Two tones: fRF1 = 940MHz, fRF2 = 940.2MHz,

10.6

Point (Note 6)

PIN1 = PIN2 = +2dBm, TC = +25°C

dBm

Output Noise Floor

ON/OFF Switching Time

PIN = +5dBm

LB_EN enable time

LB_EN disable time

-137

0.12

0.12

dBc/Hz

µs

LBOUT to ATTEN_OUTB Isolation

Mixer enabled, attenuators A and B both set

67

dB

to 31dB, PIN = +5dBm

ATTEN_OUTB to LBOUT Isolation

Mixer disabled, PIN = 0dBm

50

dB

Output Return Loss

Mixer enabled, 50Ω load

Mixer disabled, 50Ω load

22

dB

23

LO Port Return Loss

SERIAL PERIPHERAL INTERFACE (SPI)

50Ω source

32

dB

Maximum Clock Speed

38

MHz

Data to Clock Setup Time

tCS

1

ns

Data to Clock Hold Time

Clock to CS Setup Time

CS Positive Pulse Width

CS Negative Pulse Width

tCH

tES

tEW

tEWN

9

ns

4

ns

18

ns

24

ns

CLOCK Pulse Width

tCW

13

ns

Note 1: All limits include external component losses. Output measurements taken at RFOUT or LBOUT ports of the Typical

Application Circuit.

Note 2: Operating outside this range is possible, but with degraded performance of some parameters.

Note 3: Compression point characterized. It is advisable not to continuously operate the VGA RF input above +15dBm.

Note 4: Input RF source contribution to spurious emissions (Agilent ESG 4435B, PSA E4443A): 200kHz = -39.2dBc,

400kHz = -73.5dBc, 600kHz = -83.2dBc, 1.2MHz = -85.7dBc

Note 5: No SPI clock input applied.

Note 6: Guaranteed by design and characterization.

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