Datasheet

Data Sheet AD8324
Rev. B | Page 3 of 16
SPECIFICATIONS
T
A
= 25°C, V
CC
= 3.3 V, R
L
= R
IN
= 75 Ω, V
IN
(differential) = 27.5 dBmV, unless otherwise noted. The AD8324 is characterized using a 1:1
transformer
1
at the device output.
Table 1.
Parameter Test Conditions/Comments Min Typ Max Unit
INPUT CHARACTERISTICS
Specified AC Voltage Output = 61 dBmV, maximum gain 27.5 dBmV
Input Resistance Single-ended input 550 Ω
Differential input 1100 Ω
Input Capacitance 2 pF
GAIN CONTROL INTERFACE
Voltage Gain Range 58 59 60 dB
Maximum Gain Gain code = 60 decimal code 32.5 33.5 34.5 dB
Minimum Gain
Gain code = 1 decimal code
–26.5
–25.5
–24.5
dB
Output Step Size
2
0.6 1.0 1.4 dB/LSB
Output Step Size Temperature Coefficient T
A
= –40°C to +85°C ±0.004 dB/°C
OUTPUT CHARACTERISTICS
Bandwidth (–3 dB)
All gain codes (1 decimal code to 60 decimal
codes)
100 MHz
Bandwidth Roll-Off f = 65 MHz 1.7 dB
1 dB Compression Point
3
Maximum gain, f = 10 MHz, output referred 19.6 21 dBm
Minimum gain, f = 10 MHz, input referred 2.1 3.7 dBm
Output Noise
2
Maximum Gain f = 10 MHz 157 166 nV/√Hz
Minimum Gain f = 10 MHz 1.3 1.5 nV/√Hz
Transmit Disable f = 10 MHz 1.1 1.2 nV/√Hz
Noise Figure
2
Maximum Gain f = 10 MHz 15.5 16.0 dB
Differential Output Impedance Transmit enable and transmit disable 75 ± 30%
4
Ω
OVERALL PERFORMANCE
Second-Order Harmonic Distortion
5, 3
f = 33 MHz, V
OUT
= 61 dBmV at maximum gain –66 –60 dBc
f = 65 MHz, V
OUT
= 61 dBmV at maximum gain –58 –53 dBc
Third-Order Harmonic Distortion (SFDR)
5, 3
f = 21 MHz, V
OUT
= 61 dBmV at maximum gain –59 –57.5 dBc
f = 65 MHz, V
OUT
= 61 dBmV at maximum gain –54 –52.5 dBc
Adjacent Power Channel Ratio (APCR)
2, 6
–61 –58 dBc
Isolation (Transmit Disable)
2
Maximum gain, f = 65 MHz –75 –70 dB
POWER CONTROL
Transmit Enable Settling Time Maximum gain, V
IN
= 0 2.5 µs
Transmit Disable Settling Time Maximum gain, V
IN
= 0 3.8 µs
Output Switching Transients
3
Equivalent output = 31 dBmV 2.5 6 mV p-p
Equivalent output = 61 dBmV 27 71 mV p-p
Output Settling
Due to Gain Change Minimum gain to maximum gain 60 ns
Due to Input Step Change
Maximum gain, V
IN
= 27.5 dBmV
30
ns