AD8302ARU-REEL Analog Devices Inc, AD8302ARU-REEL Datasheet - Page 22

• Manufacturer Part Number: AD8302ARU-REEL
• Description: IC DETECTOR RF/IF 14-TSSOP T/R
• Manufacturer: Analog Devices Inc

Specifications of AD8302ARU-REEL

• Rohs Status: RoHS non-compliant
• Frequency: 2.7GHz
• Rf Type: General Purpose
• Input Range: -60dBm ~ 0dBm
• Accuracy: 0.5dB
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 23mA
• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Pin Count: 14
• Screening Level: Industrial
• Package Type: TSSOP
• Lead Free Status / Rohs Status: Not Compliant

AD8302
CHARACTERIZATION SETUPS AND METHODS
The general hardware configuration used for most of the AD8302
characterization is shown in Figure 16. The characterization board
is similar to the Customer Evaluation Board. Two reference-locked
R and S SMT03 signal generators are used as the inputs to
INPA and INPB, while the gain and phase outputs are monitored
using both a TDS 744A oscilloscope with 10× high impedance
probes and Agilent 34401A multimeters.
Gain
The basic technique used to evaluate the static gain (VMAG)
performance was to set one source to a fixed level and sweep the
amplitude of the other source, while measuring the VMAG output
with the DMM. In practice, the two sources were run at 100 kHz
frequency offset and average output measured with the DMM to
alleviate errors that might be induced by gain/phase modulation
due to phase jitter between the two sources.
The errors stated are the difference between a best fit line calcu-
lated by a linear regression and the actual measured data divided
by the slope of the line to give an error in V/dB. The referred to
25°C error uses this same method while always using the slope
and intercept calculated for that device at 25°C.
Response measurement made of the VMAG output used the
configuration shown in Figure 17. The variable attenuator,
Alpha AD260, is driven with a HP8112A pulse generator pro-
ducing a change in RF level within 10 ns.
Noise spectral density measurements were made using a
HP3589A with the inputs delivered through a Narda 4032C
90° phase splitter.
To measure the modulation of VMAG due to phase variation
again the sources were run at a frequency offset, f
creating a continuous linear change in phase going through 360°
once every 1/f
with a DSO. When perceivable, only at high frequencies and
large input magnitude differences, the linearly ramping phase
creates a near sinusoid output riding on the expected VMAG dc
output level. The curves in TPC 24 show the peak-to-peak out-
put level measured with averaging.
OS
seconds. The VMAG output is then measured
OS
, effectively
–22–
Phase
The majority of the VPHS output data was collected by generating
phase change, again by operating the two input sources with a
small frequency offset (normally 100 kHz) using the same
configuration shown in Figure 16. Although this method gives
excellent linear phase change, good for measurement of slope
and linearity, it lacks an absolute phase reference point. In the
curves showing swept phase, the phase at which the VPHS is the
same as VPHS with no input signal is taken to be –90° and all
other angles are references to there. Typical Performance Curves
show two figures of merit; instantaneous slope and error. Instanta-
neous slope, as shown in TPCs 43, 44, 45, and 47, was calculated
simply by taking the delta in VPHS over angular change for adjacent
measurement points.
Figure 17. VMAG Dynamic Performance Measurement Setup
GENERATOR
R & S
SIGNAL GENERATOR
SMTO3
R & S
SIGNAL GENERATOR
SMTO3
SIGNAL
SMTO3
R & S
SPLITTER
Figure 16. Primary Characterization Setup
GENERATOR
VARIABLE
ATTEN
ATTEN
PULSE
FIXED
3dB
3dB
INPA
INPB
3dB
3dB
TEKTRONIX
VX1410A
EVB
INPA
INPB
TEKTRONIX
VX1410A
EVB
VMAG
VREF
VPHS
VMAG
VPHS
VREF
P
TEKTRONIX
TDS 744A
OSCILLOSCOPE
MULTIMETER/
OSCILLOSCOPE
HP 34401A
MULTIMETER
SAME SETUP AS
V
MAG
TEKTRONIX
TDS 744A
OSCILLOSCOPE
REV. A