RMS measurement of high crest-factor signals
Dual-channel and channel difference outputs ports
Integrated accurately scaled temperature sensor
Wide dynamic range ±1 dB over 60 dB
±0.5 dB temperature-stable linear-in-dB response
Low log conformance ripple
+5 V operation at 70 mA, –40°C to +85°C
Small footprint, 5 mm x 5 mm, LFCSP
APPLICATIONS
Wireless infrastructure power amplifier linearization/control
Antenna VSWR monitor
Gain and power control and measurement
Transmitter signal strength indication (TSSI)
Dual-channel wireless infrastructure radios
GENERAL DESCRIPTION
The AD8364 is a true rms, responding, dual-channel RF power
measurement subsystem for the precise measurement and control
of signal power. The flexibility of the AD8364 allows communications systems, such as RF power amplifiers and radio transceiver
AGC circuits, to be monitored and controlled with ease. Operating
on a single 5 V supply, each channel is fully specified for operation
up to 2.7 GHz over a dynamic range of 60 dB. The AD8364
provides accurately scaled, independent, rms outputs of both RF
measurement channels. Difference output ports, which measure
the difference between the two channels, are also available. The
on-chip channel matching makes the rms channel difference
outputs extremely stable with temperature and process variations.
The device also includes a useful temperature sensor with an
accurately scaled voltage proportional to temperature, specified
over the device operating temperature range. The AD8364 can
be used with input signals having rms values from −55 dBm to
+5 dBm referred to 50 Ω and large crest factors with no
accuracy degradation.
Dual 60 dB TruPwr™ Detector
AD8364
FUNCTIONAL BLOCK DIAGRAM
VPSA
INHA
INLA
PWDN
OMR
INLB
INHB
VPSB
CHPA
DECA
24232221201918 17
TEMP
25
26
27
28
29
30
31
32
CHANNEL A
TruPwr™
OUTA
OUTB
CHANNEL B
TruPwr™
BIAS
12345678
DECB
CHPB
COM
I
SIG
I
TGT
I
SIG
I
TGT
VGA
CONTROL
COMB
VPSR
VGA
CONTROL
2
2
2
2
ADJB
ACO
ADJA
TEMP
VREF
Figure 1. Functional Block Diagram
Integrated in the AD8364 are two matched AD8362 channels
AD8362 data sheet for more information) with improved
(see the
temperature performance and reduced log conformance ripple.
Enhancements include improved temperature performance and
reduced log-conformance ripple compared to the
chip wide bandwidth output op amps are connected to accommodate flexible configurations that support many system
solutions.
The device can easily be configured to provide four rms
measurements simultaneously. Linear-in-dB rms measurements
are supplied at OUTA and OUTB, with conveniently scaled
slopes of 50 mV/dB. The rms difference between OUTA and
OUTB is available as differential or single-ended signals at
OUTP and OUTN. An optional voltage applied to VLVL
provides a common mode reference level to offset OUTP and
OUTN above ground.
The AD8364 is supplied in a 32-lead, 5 mm × 5 mm LFCSP, for
the operating temperature of –40°C to +85°C.
ACO
VLVL
CLPA
16
15
14
13
12
11
10
9
CLPB
AD8362. On-
VSTA
OUTA
FBKA
OUTP
OUTN
FBKB
OUTB
VSTB
05334-001
Rev. 0
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.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Specified Frequency Range LF 2.7 GHz
DC Common-Mode Voltage 2.5 V
Signal Output Interface OUT[A, B] (Pins 15, 10)
Wideband Noise CLP[A, B] = 0.1µF, f
RF input = 2140 MHz, ≥−40 dBm
MEASUREMENT MODE,
450 MHz OPERATION
ADJA = ADJB = 0 V, error referred to best fit line using
linear regression @ P
T
= 25°C, balun = M/A-Com ETK4-2T
A
±1 dB Dynamic Range1 Pins OUT[A, B] 69 dB
−40°C < TA < +85°C 65 dB
±0.5 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 62/59 dB
−40°C < TA < +85°C, (Channel A/Channel B) 50/52 dB
Maximum Input Level ±1 dB error 12 dBm
Minimum Input Level ±1 dB error −58 dBm
Slope 51.6 mV/dB
Intercept −59 dBm
Output Voltage—High Power In Pins OUT[A, B] @ P
Output Voltage—Low Power In Pins OUT[A, B] @ P
Temperature Sensitivity Deviation from OUT[A, B] @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from OUTP to OUTN @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Input A to Input B Isolation Baluns = Macom ETC1.6-4-2-3 (both channels) 71 dB
Input A to OUTB Isolation Freq separation = 1 kHz
Input B to OUTA Isolation2 P
P
= −50 dBm, OUTB = OUTB
INHB
= −50 dBm, OUTA = OUTA
INHA
Input Impedance INHA/INLA, INHB/INLB differential drive 210||0.1 Ω||pF
Input Return Loss With recommended balun −12 dB
MEASUREMENT MODE,
880 MHz OPERATION
ADJA = ADJB = 0 V, error referred to best fit line using
linear regression @ P
= 25°C, balun = Mini-Circuits® JTX-4-10T
T
A
±1 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 66/57 dB
−40°C < TA < +85°C 58/40 dB
±0.5 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 62/54 dB
−40°C < TA < +85°C 20/20 dB
Maximum Input Level ±1 dB error, (Channel A/Channel B) 8/0 dBm
Minimum Input Level ±1 dB error, (Channel A/Channel B) −58/−57 dBm
Slope 51.6 mV/dB
Intercept −59.2 dBm
Output Voltage—High Power In Pins OUT[A, B] @ P
Output Voltage—Low Power In Pins OUT[A, B] @ P
= 100 kHz,
SPOT
40 nV/√Hz
= −40 dBm and −20 dBm,
INH[A, B]
= −10 dBm 2.53 V
INH[A, B]
= −40 dBm 0.99 V
INH[A, B]
= −10 dBm −0.1, +0.2 dB
INH[A, B]
= −25 dBm −0.2, +0.3 dB
INH[A, B]
= −40 dBm −0.3, +0.4 dB
INH[A, B]
= −10 dBm, −25 dBm ±0.25 dB
INH[A, B]
= −25 dBm, −25 dBm ±0.2 dB
INH[A, B]
= −40 dBm, −25 dBm ±0.2 dB
INH[A, B]
± 1 dB 54 dB
PINHB
± 1 dB 54 dB
PINHA
= −40 dBm and −20 dBm,
INH[A, B]
= −10 dBm 2.54 V
INH[A, B]
= −40 dBm 0.99 V
INH[A, B]
Rev. 0 | Page 3 of 48
AD8364
Parameter Conditions Min Typ Max Unit
Temperature Sensitivity Deviation from OUT[A, B] @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from OUTP to OUTN @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Input A to Input B Isolation Baluns = Macom ETC1.6-4-2-3 (both channels) 64 dB
Input A to OUTB Isolation P
Input B to OUTA Isolation2 P
= −50 dBm, OUTB = OUTB
INHB
= −50 dBm, OUTA = OUTA
INHA
Input Impedance INHA/INLA, INHB/INLB differential drive 200||0.3 Ω||pF
Input Return Loss With recommended balun −9 dB
MEASUREMENT MODE,
1880 MHz OPERATION
ADJA = ADJB = 0.75 V, error referred to best fit line using
linear regression @ P
T
= 25°C, balun = Murata LDB181G8820C-110
A
±1 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 69/61 dB
−40°C < TA < +85°C 60/50 dB
±0.5 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 62/51 dB
−40°C < TA < +85°C 58/51 dB
Maximum Input Level ±1 dB error, (Channel A/Channel B) 11/3 dBm
Minimum Input Level ±1 dB error −58 dBm
Slope 50 mV/dB
Intercept −62 dBm
Output Voltage—High Power In Pins OUT[A, B] @ P
Output Voltage—Low Power In Pins OUT[A, B] @ P
Temperature Sensitivity Deviation from OUT[A, B] @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from OUTP to OUTN @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Input A to Input B Isolation Baluns = Macom ETC1.6-4-2-3 (both channels) 61 dB
Input A to OUTB Isolation P
Input B to OUTA Isolation2 P
= −50 dBm, OUTB = OUTB
INHB
= −50 dBm, OUTA = OUTA
INHA
Input Impedance INHA/INLA, INHB/INLB differential drive 167||0.14 Ω||pF
Input Return Loss With recommended balun −8 dB
MEASUREMENT MODE,
2.14 GHz OPERATION
ADJA = ADJB = 1.02 V, error referred to best fit line using
linear regression @ P
T
= 25°C, balun = Murata LDB212G1020C-001
A
±1 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 66/57 dB
−40°C < TA < +85°C 58/40 dB
±0.5 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 62/54 dB
−40°C < TA < +85°C 30/30 dB
Maximum Input Level ±1 dB Error, (Channel A/Channel B) −2/−4 dBm
Minimum Input Level ±1 dB Error, (Channel A/Channel B) −57−51 dBm
Slope Channel A/Channel B 49.5/52.1 mV/dB
Intercept Channel A/Channel B −58.3/−57.1 dBm
Output Voltage—High Power In Pins OUT[A, B] @ P
= −10 dBm +0.5 dB
INH[A, B]
= −25 dBm +0.5 dB
INH[A, B]
= −40 dBm +0.5 dB
INH[A, B]
= −10 dBm, −25 dBm +0.1, −0.2 dB
INH[A, B]
= −25 dBm, −25 dBm +0.1, −0.2 dB
INH[A, B]
= −40 dBm, −25 dBm +0.1, −0.2 dB
INH[A, B]
± 1 dB 35 dB
PINHB
± 1 dB 35 dB
PINHA
= −40 dBm and −20 dBm,
INH[A, B]
= −10 dBm 2.49 V
INH[A,B]
= −40 dBm 0.98 V
INH[A,B]
= −10 dBm +0.5, −0.2 dB
INH[A, B]
= −25 dBm +0.5, −0.2 dB
INH[A, B]
= −40 dBm +0.5, −0.2 dB
INH[A, B]
= −10 dBm, −25 dBm ±0.3 dB
INH[A, B]
= −25 dBm, −25 dBm ±0.3 dB
INH[A, B]
= −40 dBm, −25 dBm ±0.3 dB
INH[A, B]
± 1 dB 33 dB
PINHB
± 1 dB 33 dB
PINHA
= −40 dBm and −20 dBm,
INH[A, B]
= −10 dBm 2.42 V
INH[A, B]
Rev. 0 | Page 4 of 48
AD8364
Parameter Conditions Min Typ Max Unit
Output Voltage—Low Power In Pins OUT[A, B] @ P
Temperature Sensitivity Deviation from OUT[A, B] @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from OUTP to OUTN @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from CW Response 5.5 dB peak-to-rms ratio (WCDMA one channel) 0.2 dB
12 dB peak-to-rms ratio (WCDMA three channels) 0.3 dB
18 dB peak-to-rms ratio (WCDMA four channels) 0.3 dB
Input A to Input B Isolation Baluns = Macom ETC1.6-4-2-3 (both channels) 58 dB
Input A to OUTB Isolation P
Input B to OUTA Isolation2 P
= −50 dBm, OUTB = OUTB
INHB
= −50 dBm, OUTA = OUTA
INHA
Input Impedance INHA/INLA, INHB/INLB differential drive 150||1.9 Ω||pF
Input Return Loss With recommended balun −10 dB
MEASUREMENT MODE,
2.5 GHz OPERATION
ADJA = ADJB = 1.14 V, error referred to best fit line using
linear regression @ P
T
= 25°C, balun = Murata LDB182G4520C-110
A
± 1 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 69/63 dB
−40°C < TA < +85°C 58 dB
±0.5 dB Dynamic Range1 Pins OUT[A, B], (Channel A/Channel B) 55/50 dB
−40°C < TA < +85°C 25 dB
Maximum Input Level ±1 dB error, (Channel A/Channel B) 17/11 dBm
Minimum Input Level ±1 dB error −52 dBm
Slope 50 mV/dB
Intercept −52.7 dBm
Output Voltage—High Power In Pins OUT[A, B] @ P
Output Voltage—Low Power In Pins OUT[A, B] @ P
Temperature Sensitivity Deviation from OUT[A, B] @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Deviation from OUTP to OUTN @ 25°C
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
−40°C < TA < 85°C; P
Input A to Input B Isolation Baluns = Macom ETC1.6-4-2-3 (both channels) 54 dB
Input A to OUTB Isolation P
Input B to OUTA Isolation2 P
= −50 dBm, OUTB = OUTB
INHB
= −50 dBm, OUTA = OUTA
INHA
Input Impedance INHA/INLA, INHB/INLB differential drive 150||1.7 Ω||pF
Input Return Loss With recommended balun −11.5 dB
OUTPUT INTERFACE Pin OUTA and OUTB
Voltage Range Min RL ≥ 200 Ω to ground 0.09 V
Voltage Range Max RL ≥ 200 Ω to ground VS − 0.15 V
Source/Sink Current OUTA and OUTB held at VS/2, to 1% change 70 mA
= −40 dBm 0.90 V
INH[A, B]
= −10 dBm +0.1, −0.4 dB
INH[A, B]
= −25 dBm +0.1, −0.4 dB
INH[A, B]
= −40 dBm +0.1, −0.4 dB
INH[A, B]
= −10 dBm, −25 dBm +0.1, −0.4 dB
INH[A, B]
= −25 dBm, −25 dBm +0.2, −0.2 dB
INH[A, B]
= −40 dBm, −25 dBm +0.1, −0.2 dB
INH[A, B]
± 1 dB 33 dB
PINHB
± 1 dB 33 dB
PINHA
= −40 dBm and −20 dBm,
INH[A, B]
= −10 dBm 2.14 V
INH[A, B]
= −40 dBm 0.65 V
INH[A, B]
= −10 dBm ±0.5 dB
INH[A, B]
= −25 dBm ±0.5 dB
INH[A, B]
= −40 dBm ±0.5 dB
INH[A, B]
= −10 dBm, −25 dBm ±0.3 dB
INH[A, B]
= −25 dBm, −25 dBm ±0.3 dB
INH[A, B]
= −40 dBm, −25 dBm ±0.3 dB
INH[A, B]
± 1 dB 31 dB
PINHB
± 1 dB 31
PINHA
Rev. 0 | Page 5 of 48
AD8364
Parameter Conditions Min Typ Max Unit
SETPOINT INPUT Pin VSTA and VSTB
Voltage Range Law conformance error ≤1 dB 0.5 3.75 V
Input Resistance 68 kΩ
Logarithmic Scale Factor f = 450 MHz, −40°C ≤ TA ≤ +85°C 50 mV/dB
Logarithmic Intercept f = 450 MHz, −40°C ≤ TA ≤ +85°C, referred to 50 Ω −55 dBm
CHANNEL DIFFERENCE OUTPUT Pin OUTP and OUTN
Voltage Range Min RL ≥ 200 Ω to ground 0.1 V
Voltage Range Max RL ≥ 200 Ω to ground VS − 0.15 V
Source/Sink Current OUTP and OUTN held at VS/2, to 1% change 70 mA
DIFFERENCE LEVEL ADJUST Pin VLVL
Voltage Range3 OUT[P, N] = FBK[A, B] 0 5 V
OUT[P,N] Voltage Range OUT[P, N] = FBK[A, B] 0
V
S
0.15
Input Resistance 1 kΩ
TEMPERATURE COMPENSATION Pin ADJA and ADJB
Input Voltage Range 0 2.5 V
Input Resistance >1 MΩ
VOLTAGE REFERENCE Pin VREF
Output Voltage RF in = −55 dBm 2.5 V
Temperature Sensitivity −40°C ≤ TA ≤ +85°C 0.4 mV/°C
Current Limit Source/Sink 1% change 10/3 mA
TEMPERATURE REFERENCE Pin TEMP
Output Voltage TA = 25°C, RL ≥ 10 kΩ 0.62 V
Temperature Coefficient −40°C ≤ TA ≤ +85°C, RL ≥ 10 kΩ 2 mV/°C
Current Source/Sink TA = 25°C to 1% change 1.6/2 mA
POWER-DOWN INTERFACE Pin PWDN
Logic Level to Enable Logic LO enables 1 V
Logic Level to Disable Logic HI disables 3 V
Input Current Logic HI PWDN = 5 V 95 µA
Logic LO PWDN = 0 V <100 µA
Enable Time
Disable Time
PWDN LO to OUTA/OUTB at 100% final value,
C
LPA/B
= Open, C
= 10 nF, RF in = 0 dBm
HPA/B
PWDN HI to OUTA/OUTB at 10% final value,
C
LPA/B
= Open, C
= 10nF, RF in = 0 dBm
HPA/B
2 µs
1.6 µs
POWER INTERFACE Pin VPS[A, B], VPSR
Supply Voltage 4.5 5.5 V
Quiescent Current RF in = −55 dBm, VS = 5 V 70 mA
−40°C ≤ TA ≤ +85°C 90 mA
Supply Current PWDN enabled, VS = 5 V 500 µA
−40°C ≤ TA ≤ +85°C 900 µA
1
Best fit line, linear regression.
2
See for a plot of isolation vs. frequency for a ±1 dB error. Figure 75
3
VLVL + OUTA/2 should not exceed VPSA − 1.31 V. Likewise, VLVL + OUTB/2 should not exceed VPSB − 1.31 V.
−
V
Rev. 0 | Page 6 of 48
AD8364
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Rating
Supply Voltage VPSA, VPSB, VPSR 5.5 V
PWDN, VSTA, VSTB, ADJA, ADJB,
0 V, 5.5 V
FBKA, FBKB
Input Power (Referred to 50 Ω) 23 dBm
Internal Power Dissipation 600 mW
θJA 39.8°C/W
1, 2
θJC 3.9°C/W2
θJB 22.8°C/W2
ΨJT 0.4°C/W
1, 2
Maximum Junction Temperature 125°C
Operating Temperature Range −40°C to +85°C
Storage Temperature Range −65°C to +150°C
1
Still air.
2
All values are modeled using a standard 4-layer JEDEC test board with the
pad soldered to the board and thermal vias in the board.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 7 of 48
AD8364
M
M
A
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
VPSA
INHA
INLA
PWDN
COMR
INLB
INHB
VPSB
25
26
27
28
29
30
31
32
CHPA
COM
DECA
24
23222120191817
AD8364
TOP VIEW
PIN 1
INDICATOR
12345
DECB
CHPB
COMB
ACO
VPSR
ADJA
ADJB
ACO
TEMP
678
VLVL
VREF
CLPA
VSTA
16
OUTA
15
FBKA
14
OUTP
13
OUTN
12
FBKB
11
OUTB
10
VSTB
9
CLPB
05334-002
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description Equiv. Circuit
1 CHPB Connect to common via a capacitor to determine 3 dB point of Channel B input signal high-
pass filter.
2, 23 DECB, DECA Decoupling Terminals for INHA/INLA and INHB/INLB. Connect to common via a large
capacitance to complete input circuit.
3, 22, 29 COMB, COMA, COMR Input System Common Connection. Connect via low impedance to system common.
4, 5 ADJB, ADJA Temperature Compensation for Channel B and Channel A. An external voltage is connected
to these pins to improve temperature drift. This voltage can be derived from VREF, that is,
connect a resistor from VREF to ADJ[A, B] and another resistor from ADJ[A, B] to ground. The
value of these resistors change as the frequency changes.
6 VREF General-Purpose Reference Voltage Output of 2.5 V.
7 VLVL Reference Level Input for OUTP and OUTN. (Usually connected to VREF through a voltage
divider or left open).
8, 17 CLPB, CLPA Channel B and Channel A Connection for Loop Filter Integration (Averaging) Capacitor.
Connect a ground-referenced capacitor to this pin. A resistor can be connected in series with
this capacitor to improve loop stability and response time.
9 VSTB The voltage applied to this pin sets the decibel value of the required RF input voltage to
Channel B that results in zero current flow in the loop integrating capacitor pin, CLPB.
10 OUTB Channel B Output of Error Amplifier. In measurement mode, normally connected directly to
VSTB.
11 FBKB Feedback Through 1 kΩ to the Negative Terminal of the Integrated Op Amp Driving OUTN.
12 OUTN Channel Differencing Op Amp Output. In measurement mode, normally connected directly to
FBKB and follows the equation OUTN = OUTA − OUTB + VLVL.
13 OUTP Channel Differencing Op Amp Output. In measurement mode, normally connected directly to
FBKA and follows the equation OUTP = OUTA − OUTB + VLVL.
14 FBKA Feedback Through 1kΩ to the Negative Terminal of the Integrated Op Amp Driving OUTP.
15 OUTA Channel A Output of Error Amplifier. In measurement mode, normally connected directly to
VSTA.
16 VSTA The voltage applied to this pin sets the decibel value of the required RF input voltage to
Channel A that results in zero current flow in the loop integrating capacitor pin, CLPA.
18, 20 ACOM Analog Common for Channels A and B. Connect via low impedance to common.
21, 25, 32 VPSR, VPSA, VPSB Supply for the Input System of Channels A and B. Supply for the internal references. Connect
to +5 V power supply.
19 TEMP Temperature Sensor Output.
24 CHPA Connect to common via a capacitor to determine 3 dB point of Channel A input signal high-
pass filter.
26, 27 INHA, INLA Channel A High and Low RF Signal Input Terminal.
28 PWDN Disable/Enable Control Input. Apply logic high voltage to shut down the AD8364.
30, 31 INLB, INHB Channel B Low and High RF Signal Input Terminal.
Under
Package
Exposed Paddle The exposed paddle on the under side of the package should be soldered to a ground plane
Figure 13. Distribution of [OUTP − OUTN] Voltage and Error over
Temperature After Ambient Normalization vs. Input Amplitude for at Least
15 Devices from Multiple Lots, Frequency = 880 MHz, ADJ[A, B] =0.5 V, Sine
Wave, Differential Drive, P
4
2
0
–2
–4
–6
–8
–10
ERROR (dB)
–12
–14
SERIES NAME INDICATES THE POLARITY
–16
AND MAGNITUDE OF THE DEVIATION
APPLIED TO THE INHA INPUT, RELATIVE
–18
TO THE INLA INPUT, AS REFERENCED TO
THE REF SIGNAL.
–20
Ch. B = −25 dBm, Channel A Swept
IN
+30DEG
-15DEG
+1dB
+10DEG
+2dB
RF INPUT AT INLA (dBm)
+20DEG
REF
-2dB
-1dB
-10DEG
10–40 –35 –30 –25 –20 –15 –10 –505
05334-004
Figure 14. Log Conformance vs. Input Amplitude at Various Amplitude and