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AD8302 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD8302은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 AD8302 기능
기능 RF/IF Gain and Phase Detector
제조업체 Analog Devices
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AD8302 데이터시트, 핀배열, 회로
a
FEATURES
Measures Gain/Loss and Phase up to 2.7 GHz
Dual Demodulating Log Amps and Phase Detector
Input Range –60 dBm to 0 dBm in a 50 System
Accurate Gain Measurement Scaling (30 mV/dB)
Typical Nonlinearity < 0.5 dB
Accurate Phase Measurement Scaling (10 mV/Degree)
Typical Nonlinearity < 1 Degree
Measurement/Controller/Level Comparator Modes
Operates from Supply Voltages of 2.7 V–5.5 V
Stable 1.8 V Reference Voltage Output
Small Signal Envelope Bandwidth from DC to 30 MHz
APPLICATIONS
RF/IF PA Linearization
Precise RF Power Control
Remote System Monitoring and Diagnostics
Return Loss/VSWR Measurements
Log Ratio Function for AC Signals
LF–2.7 GHz
RF/IF Gain and Phase Detector
AD8302
FUNCTIONAL BLOCK DIAGRAM
INPA
OFSA
AD8302
VIDEO OUTPUT – A +
+
60dB LOG AMPS
(7 DETECTORS)
––
COMM
PHASE
DETECTOR
MFLT
VMAG
MSET
PSET
OFSB
INPB
VPOS
60dB LOG AMPS
(7 DETECTORS)
VIDEO OUTPUT – B
BIAS
+
1.8V
x3
VPHS
PFLT
VREF
PRODUCT DESCRIPTION
The AD8302 is a fully integrated system for measuring gain/loss
and phase in numerous receive, transmit, and instrumentation
applications. It requires few external components and a single
supply of 2.7 V–5.5 V. The ac-coupled input signals can range
from –60 dBm to 0 dBm in a 50 system, from low frequencies
up to 2.7 GHz. The outputs provide an accurate measurement
of either gain or loss over a ± 30 dB range scaled to 30 mV/dB,
and of phase over a 0°–180° range scaled to 10 mV/degree.
Both subsystems have an output bandwidth of 30 MHz, which
may optionally be reduced by the addition of external filter
capacitors. The AD8302 can be used in controller mode to
force the gain and phase of a signal chain toward predetermined
setpoints.
The AD8302 comprises a closely matched pair of demodulating
logarithmic amplifiers, each having a 60 dB measurement range.
By taking the difference of their outputs, a measurement of
the magnitude ratio or gain between the two input signals is
available. These signals may even be at different frequencies,
allowing the measurement of conversion gain or loss. The AD8302
may be used to determine absolute signal level by applying the
unknown signal to one input and a calibrated ac reference signal
to the other. With the output stage feedback connection dis-
abled, a comparator may be realized, using the setpoint pins
MSET and PSET to program the thresholds.
The signal inputs are single-ended, allowing them to be matched
and connected directly to a directional coupler. Their input
impedance is nominally 3 kat low frequencies.
The AD8302 includes a phase detector of the multiplier type,
but with precise phase balance driven by the fully limited signals
appearing at the outputs of the two logarithmic amplifiers.
Thus, the phase accuracy measurement is independent of signal
level over a wide range.
The phase and gain output voltages are simultaneously available
at loadable ground referenced outputs over the standard output
range of 0 V to 1.8 V. The output drivers can source or sink up
to 8 mA. A loadable, stable reference voltage of 1.8 V is avail-
able for precise repositioning of the output range by the user.
In controller applications, the connection between the gain
output pin VMAG and the setpoint control pin MSET is broken.
The desired setpoint is presented to MSET and the VMAG
control signal drives an appropriate external variable gain device.
Likewise, the feedback path between the phase output pin VPHS
and its setpoint control pin PSET may be broken to allow
operation as a phase controller.
The AD8302 is fabricated on Analog Devices’ proprietary, high
performance 25 GHz SOI complementary bipolar IC process. It is
available in a 14-lead TSSOP package and operates over a –40°C
to +85°C temperature range. An evaluation board is available.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329–4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002




AD8302 pdf, 반도체, 판매, 대치품
AD8302
Parameter
Conditions
Min Typ Max Unit
900 MHz
Dynamic Range
Slope
Deviation vs. Temperature
Gain Measurement Balance
Dynamic Range
Slope (Absolute Value)
Deviation
Phase Measurement Balance
1900 MHz
Dynamic Range
Slope
Deviation vs. Temperature
Gain Measurement Balance
Dynamic Range
Slope (Absolute Value)
Deviation
Phase Measurement Balance
2200 MHz
Dynamic Range
Slope
Deviation vs. Temperature
Gain Measurement Balance
Dynamic Range
Slope (Absolute Value)
Deviation
REFERENCE VOLTAGE
Output Voltage
PSRR
Output Current
MAGNITUDE OUTPUT
± 1 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.5 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.2 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
From Linear Regression
Deviation from Output at 25°C
–40°C TA +85°C, PINPA = PINPB = –30 dBm
Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, PINPA = ± 25 dB, PINPB = –30 dBm
PINPA = PINPB = –5 dBm to –50 dBm
PHASE OUTPUT
Less than ± 1 Degree Deviation from Best Fit Line
Less than 10% Deviation in Instantaneous Slope
From Linear Regression about –90° or +90°
Linear Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, Delta Phase = 90 Degrees
–40°C TA +85°C, Delta Phase = ± 30 Degrees
Phase @ INPA = Phase @ INPB, PIN = –5 dBm to –50 dBm
MAGNITUDE OUTPUT
± 1 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.5 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.2 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
From Linear Regression
Deviation from Output at 25°C
–40°C TA +85°C, PINPA = PINPB = –30 dBm
Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, PINPA = ± 25 dB, PINPB = –30 dBm
PINPA = PINPB = –5 dBm to –50 dBm
PHASE OUTPUT
Less than ± 1 Degree Deviation from Best Fit Line
Less than 10% Deviation in Instantaneous Slope
From Linear Regression about –90° or +90°
Linear Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, Delta Phase = 90 Degrees
–40°C TA +85°C, Delta Phase = ± 30 Degrees
Phase @ INPA = Phase @ INPB, PIN = –5 dBm to –50 dBm
MAGNITUDE OUTPUT
± 1 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.5 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
± 0.2 dB Linearity PREF = –30 dBm (VREF = –43 dBV)
From Linear Regression
Deviation from Output at 25°C
–40°C TA +85°C, PINPA = PINPB = –30 dBm
Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, PINPA = ± 25 dB, PINPB = –30 dBm
PINPA = PINPB = –5 dBm to –50 dBm
PHASE OUTPUT
Less than ± 1 Degree Deviation from Best Fit Line
Less than 10% Deviation in Instantaneous Slope
From Linear Regression about –90° or +90°
Linear Deviation from Best Fit Curve at 25°C
–40°C TA +85°C, Delta Phase = 90 Degrees
–40°C TA +85°C, Delta Phase = ± 30 Degrees
Pin VREF
Load = 2 k
VS = 2.7 V to 5.5 V
Source/Sink (Less than 1% Change)
1.7
58 dB
54 dB
42 dB
28.7 mV/dB
0.25 dB
0.25 dB
0.2 dB
143 Degree
143 Degree
10.1 mV/Degree
0.75 Degree
0.75 Degree
0.8 Degree
57 dB
54 dB
42 dB
27.5 mV/dB
0.27 dB
0.33 dB
0.2 dB
128 Degree
120 Degree
10.2 mV/Degree
0.8 Degree
0.8 Degree
1 Degree
53 dB
51 dB
38 dB
27.5 mV/dB
0.28 dB
0.4 dB
0.2 dB
115 Degree
110 Degree
10 mV/Degree
0.85 Degree
0.9 Degree
1.8 1.9 V
0.25 mV/V
5 mA
POWER SUPPLY
Supply
Operating Current (Quiescent)
Pin VPOS
VS = 5 V
–40°C TA +85°C
Specifications subject to change without notice.
2.7 5.0 5.5 V
19 25 mA
21 27 mA
REV. A
–3–

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AD8302 전자부품, 판매, 대치품
AD8302Typical Performance Characteristics
(VS = 5 V, VINPB is the reference input and VINPA is swept, unless otherwise noted. All references to dBm are referred to 50 . For the phase output
curves, the input signal levels are equal, unless otherwise noted.)
2.0
900
1.8
100
1.6
1.4
2200
1.2
1.0 2700 1900
0.8
0.6
0.4
0.2
0
30 25 20 15 10 5 0 5 10 15 20 25 30
MAGNITUDE RATIO dB
TPC 1. Magnitude Output (VMAG) vs. Input Level Ratio
(Gain) VINPA/VINPB, Frequencies 100 MHz, 900 MHz,
1900 MHz, 2200 MHz, 2700 MHz, 25؇C, PINPB = 30 dBm,
(Re: 50 )
1.80
1.65
1.50
1.35
1.20
1.05
0.90
40؇C
+25؇C
0.75
+85؇C
0.60
0.45
0.30
0.15
0
30 20 10
0
10
MAGNITUDE RATIO dB
20
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
30
TPC 4. VMAG and Log Conformance vs. Input Level Ratio
(Gain), Frequency 900 MHz, 40؇C, +25؇C, and +85؇C,
Reference Level = 30 dBm
2.0
1900
1.8
1.6
1.4
2700
1.2
1.0
0.8
0.6
2200
0.4
0.2
0
30 25 20 15 10 5 0
900
100
5 10 15 20 25 30
MAGNITUDE RATIO dB
TPC 2. VMAG vs. Input Level Ratio (Gain) VINPA/VINPB,
Frequencies 100 MHz, 900 MHz, 1900 MHz, 2200 MHz,
2700 MHz, PINPA = 30 dBm
1.80
1.65
1.50
1.35
1.20
1.05
0.90
0.75
0.60
40؇C
+25؇C
+85؇C
0.45
0.30
0.15
0
30 20 10
0
10
MAGNITUDE RATIO dB
20
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
30
TPC 5. VMAG and Log Conformance vs. Input Level Ratio
(Gain), Frequency 1900 MHz, 40؇C, +25؇C, and +85؇C,
Reference Level = 30 dBm
1.80
1.65
1.50
1.35
3.0
2.5
2.0
1.5
1.20
1.05
0.90
0.75
40؇C
+85؇C
+25؇C
1.0
0.5
0.0
0.5
0.60
1.0
0.45
1.5
0.30
2.0
0.15
2.5
0
30 20 10
0
10
MAGNITUDE RATIO dB
20
3.0
30
TPC 3. VMAG Output and Log Conformance vs. Input
Level Ratio (Gain), Frequency 100 MHz, 40؇C, +25؇C,
and +85؇C, Reference Level = 30 dBm
1.80
1.65
1.50
1.35
1.20
1.05
0.90
0.75
0.60
40؇C
+25؇C
+85؇C
0.45
0.30
0.15
0
30 20 10
0
10
MAGNITUDE RATIO dB
20
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
30
TPC 6. VMAG Output and Log Conformance vs. Input
Level Ratio (Gain), Frequency 2200 MHz, 40؇C, +25؇C,
and +85؇C, Reference Level = 30 dBm
6REV. A

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