MAX2642 datasheet(3/16 Pages) MAXIM

Part #	MAX2642

Description	900MHz SiGe, High IP3, Low-Noise Amplifiers

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Manufacturer	MAXIM [Maxim Integrated Products]

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900MHz SiGe, High IP3,

Low-Noise Amplifiers

_______________________________________________________________________________________

3

AC ELECTRICAL CHARACTERISTICS

(MAX2642/MAX2643 EV kits, PRFIN = -30dBm, fRFIN = 900MHz, input and output are terminated to 50

Ω, VCC = +3.0V, TA = +25°C,

RBIAS = 510

Ω, unless otherwise noted.) (Note 12)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Operating Frequency Range

(Note 13)

800

1000

MHz

Gain (Note 14)

TA = +25

°C

14.5

16.7

19

dB

Gain Variation Over Temperature

TA = -40

°C to +85°C

±0.35

±0.75

dB

Attenuation Step

MAX2642 only

13

dB

RBIAS = 510

Ω

0

RBIAS = 806

Ω

-5

Input Third-Order Intercept Point

(Note 15)

RBIAS = 1.1k

Ω

-10

dBm

-18

Input 1dB Compression Point

MAX2642, low-gain mode

-17

dBm

1.35

1.6

Noise Figure (Note 16)

MAX2642, low-gain mode

4.3

dB

-10

-12

Input Return Loss

MAX2642, low-gain mode

-10

-18

dB

-10

-14

Output Return Loss

MAX2642, low-gain mode

-10

-11

dB

-20

-26

Reverse Isolation

MAX2642, low-gain mode

-10

-17

dB

Gain-Step Response Time

MAX2642

5

10

µs

MAX2643

6

10

Shutdown Response Time

MAX2642, through series switch at BIAS

12

µs

Note 1:

Devices are production tested at TA = +25°C. Minimum and maximum values are guaranteed by design and characterization

over temperature and supply voltage.

Note 2:

High-gain mode is set for the MAX2642 by connecting RFOUT to GND through a 33k

Ω resistor.

Note 3:

Low-gain mode is applicable only to the MAX2642 and is set by connecting RFOUT to VCC through a 33k

Ω resistor.

Note 4:

Maximum DC voltage through a 33k

Ω resistor that sets the MAX2642 to operate in high-gain mode.

Note 5:

Minimum DC voltage through a 33k

Ω resistor that sets the MAX2642 to operate in low-gain mode.

Note 6:

DC current required when RFOUT is connected to GND through a 33k

Ω resistor (MAX2642) and 10kΩ resistor (MAX2643).

Note 7:

DC current required when RFOUT is connected to VCC through a 33k

Ω resistor (MAX2642) and 10kΩ resistor (MAX2643).

Note 8:

Normal operation is set for the MAX2643 by connecting RFOUT to VCC through a 10k

Ω resistor.

Note 9:

Shutdown is set for the MAX2643 by connecting RFOUT to GND through a 10k

Ω resistor.

Note 10: Minimum DC voltage through a 10k

Ω resistor that sets the MAX2643 to operate in normal mode.

Note 11: Maximum DC voltage through a 10k

Ω resistor that sets the MAX2643 to operate in shutdown mode.

Note 12: Min/Max limits are guaranteed by design and characterization, except gain is production tested at TA = +25°C.

Note 13: The part has been characterized at the specified frequency range. Operation outside this range is possible but not guar-

anteed.

Note 14: Devices are production tested at TA = +25°C.

Note 15: Measured with two input tones, f1 = 895MHz and f2 = 905MHz, both at -30dBm per tone.

Note 16: Excludes PC board losses (0.25dB typical at the input of the MAX2642/MAX2643 EV kit).

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