Manual

MAX2654/MAX2655/MAX2656
1575MHz/1900MHz Variable-IP3
Low-Noise Amplifiers
AC ELECTRICAL CHARACTERISTICS (MAX2656)
(MAX2656 Evaluation Kit, V
CC
= +3V, P
IN
= -30dBm, f
IN
= 1960MHz, V
RFOUT
= GND through a 12kΩ resistor, R
BIAS
= 511Ω ±1%, T
A
= +25°C. Typical values are at V
CC
= +3V, T
A
= +25°C, unless otherwise noted.) (Note 6)
PARAMETER CONDITIONS MIN TYP MAX UNIT
Operating Frequency Range (Note 7) 1800 2000 MHz
Gain, High-Gain Mode (Note 11) 12 13.5 dB
Gain, Low-Gain Mode (Note 12) 0.8 dB
Gain Variation Over Temperature T
A
= -40°C to +85°C 0.3 1.2 dB
Gain Step 12.7 dB
R
BIAS
= 511Ω ± 1% 1.5
R
BIAS
= 715Ω ± 1% -3
Input Third-Order Intercept Point
(Note 13)
Low-gain mode (Note 12) 7.2
dBm
High-gain mode (Note 11) -7
Input 1dB Compression Point
Low-gain mode (Note 12) -1.2
dBm
High-gain mode (Note 11) 1.9 2.4
Noise Figure (Note 10)
Low-gain mode (Note 12) 10.8
dB
High-gain mode (Note 11) 14.4
Input Return Loss
Low-gain mode (Note 12) 19.3
dB
High-gain mode (Note 11) 10.7
Output Return Loss
Low-gain mode (Note 12) 7.3
dB
High-gain mode (Note 11) 28
Reverse Isolation
Low-gain mode (Note 12) 25
dB
Gain Step Response Time 3.2 µs
Note 1: Devices are production tested at T
A
= +25°C. Minimum and maximum values are guaranteed by design and characteriza-
tion over temperature and supply voltages to ±6 sigma.
Note 2: Minimum DC voltage through a 10kΩ resistor that sets the MAX2654/MAX2655 to operate in normal mode and MAX2656 in
low-gain mode.
Note 3: Maximum DC voltage through a 10kΩ resistor that sets the MAX2654/MAX2655 to operate in shutdown mode and
MAX2656 in high-gain mode.
Note 4: DC current required when V
RFOUT
is connected to V
CC
through a 10kΩ resistor.
Note 5: DC current required when V
RFOUT
is connected to GND through a 10kΩ resistor.
Note 6: Guaranteed by design and characterization to ±3 sigma.
Note 7: The part has been characterized at the specified frequency range. Operation outside of this range is possible, but not
guaranteed.
Note 8: Production tested at T
A
= +25°C.
Note 9: Measured with two input tones, f
1
= 1570MHz, f
2
= 1580MHz, both at -30dBm per tone.
Note 10: Excludes PC board losses of 0.2dB for MAX2654/MAX2655 and 0.25dB for MAX2656.
Note 11: High-gain mode is set up by connecting RFOUT to GND through a 12kΩ resistor.
Note 12: Low-gain mode is set up by connecting RFOUT to V
CC
through a 12kΩ resistor.
Note 13: Measured with two input tones, f
1
= 1955MHz, f
2
= 1965MHz, both at -30dBm per tone.
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