Datasheet

MAX2055
Digitally Controlled, Variable-Gain, Differential
ADC Driver/Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1; V
CC
= +4.75V to +5.25V, GND = 0V. No input signals applied, and input and output ports are terminated with
50Ω. R1 = 1.13kΩ, T
A
= -40°C to +85°C. Typical values are at V
CC
= +5V and T
A
= +25°C, unless otherwise noted.) (Notes 1, 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
All Pins to GND. .....................................-0.3V to +(V
CC
+ 0.25V)
Input Signal (RF_IN)............................…………………….20dBm
Output Power (RF_OUT) ...................................................24dBm
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TSSOP (derate 21.7mW/°C above +70°C) ...........2.1W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SUPPLY
Supply Voltage V
CC
4.75 5.0 5.25 V
Supply Current I
CC
240 290 mA
I
SET
Current I
SET
1.1 mA
CONTROL INPUTS
Control Bits Parallel 5 Bits
Input Logic High 2V
Input Logic Low 0.6 V
Input Leakage Current -1.2 +1.2 µA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Frequency Range f
R
30 300 MHz
Gain G 19.9 dB
Amplitude Unbalance (Note 3) 0.06 dB
Phase Unbalance (Note 3) 0.7 D eg r ees
Minimum Reverse Isolation 29 dB
Noise Figure NF 5.8 dB
Output 1dB Compression Point P
1dB
25.7 dBm
2nd-Order Output Intercept Point OIP2
f
1
+ f
2
, f
1
= 70MHz, f
2
= 71MHz, 5dBm/tone
at RF_OUT
75 dBm
3rd-Order Output Intercept Point OIP3 All gain conditions, 5dBm/tone at RF_OUT 40 dBm
2nd Harmonic 2f
IN
-76 dBc
3rd Harmonic 3f
IN
-69 dBc
RF Gain-Control Range 23 dB
Gain-Control Resolution 1dB
Attenuation Absolute Accuracy Compared to the ideal expected attenuation ±0.2 dB
Attenuation Relative Accuracy Between adjacent states
+0.05/
-0.2
dB
Gain Drift Over Temperature T
A
= -40°C to +85°C ±0.3 dB
AC ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1; V
CC
= +4.75V to +5.25V, GND = 0V, max gain (B0 = B1 = B2 = B3 = B4 = 0), R
1
= 1.13kΩ, P
OUT
= 5dBm,
f
IN
= 70MHz, 50Ω system impedance. Typical values are at V
CC
= +5V and T
A
= +25°C, unless otherwise noted.) (Notes 1, 2)