1 MHz to 4 GHz, 80 dB
Logarithmic Detector/Controller
ADL5513
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
DET
NC
NC
CLPF
NC
16
15
14
13
DET
DET
DET
DET
I
V
12 VOUT
VPOS 1
INHI 2
I
INLO 3
ADL5513
VPOS 4
SLOPE
CONTROL
BAND GAP
REFERENCE
V
11 VSET
10 COMM
GAIN
BIAS
5
6
7
8
NC
NC
NC
NC
9 TADJ
07514-001
Wide bandwidth: 1 MHz to 4 GHz
80 dB dynamic range (±3 dB)
Constant dynamic range over frequency
Stability over −40oC to +85oC temperature range: ±0.5 dB
Operating temperature range: −40oC to +125oC
Sensitivity: −70 dBm
Low noise measurement/controller output (VOUT)
Pulse response time: 21 ns/20 ns (fall/rise)
Single-supply operation: 2.7 V to 5.5 V at 31 mA
Power-down feature: 1 mW at 5 V
Small footprint LFCSP
Fabricated using high speed SiGe process
Figure 1.
APPLICATIONS
RF transmitter power amplifier linearization and gain/power
control
Power monitoring in radio link transmitters
RSSI measurement in base stations, WLAN, WiMAX, RADAR
GENERAL DESCRIPTION
The ADL5513 is a demodulating logarithmic amplifier, capable
of accurately converting an RF input signal to a corresponding
decibel-scaled output. It employs the progressive compression
technique over a cascaded amplifier chain, each stage of which
is equipped with a detector cell. The device can be used in either
measurement or controller modes. The ADL5513 maintains
accurate log conformance for signals up to 4 GHz. The input
dynamic range is typically 80 dB (referred to 50 Ω) with error less
than ±3 dB and 74 dB with error less than ±1 dB. The ADL5513
has 20 ns response time that enables RF burst detection to a
pulse rate of beyond 50 MHz. The device provides unprecedented
logarithmic intercept stability vs. ambient temperature conditions.
A supply of 2.7 V to 5.5 V is required to power the device. Current
consumption is 31 mA, and it decreases to 200 μA when the
device is disabled.
The ADL5513 can be configured to provide a control voltage to
a power amplifier or a measurement output from the VOUT pin.
Because the output can be used for controller applications,
special attention has been paid to minimize wideband noise. In
this mode, the setpoint control voltage is applied to the VSET pin.
Rev. A
The feedback loop through an RF amplifier is closed via VOUT,
the output of which regulates the amplifier output to a magnitude corresponding to VSET. The ADL5513 provides 0 V to
(VPOS − 0.1 V) output capability at the VOUT pin, suitable
for controller applications. As a measurement device, VOUT
is externally connected to VSET to produce an output voltage,
VOUT, that increases linear-in-dB with RF input signal amplitude.
The logarithmic slope is 21 mV/dB, determined by the VSET
interface. The intercept is −88 dBm (referred to 50 Ω, continuous wave input, 900 MHz) using the INHI input. These
parameters are very stable against supply and temperature
variations.
The ADL5513 is fabricated on a SiGe bipolar IC process and
is available in a 3 mm × 3 mm, 16-lead LFCSP package for the
−40°C to +125°C operating temperature range. A fully populated
evaluation board is available.
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Tel: 781.329.4700 ©2008–2017 Analog Devices, Inc. All rights reserved.
Technical Support
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ADL5513
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Setpoint Interface ....................................................................... 15
Applications ....................................................................................... 1
Description of Characterization ............................................... 15
Functional Block Diagram .............................................................. 1
Error Calculations ...................................................................... 16
General Description ......................................................................... 1
Adjusting Accuracy Through Choice of Calibration Points 16
Revision History ............................................................................... 2
Temperature Compensation of Output Voltage ..................... 17
Specifications..................................................................................... 3
Device Calibration ..................................................................... 18
Absolute Maximum Ratings............................................................ 7
Power-Down Functionality ....................................................... 18
ESD Caution .................................................................................. 7
Measurement Mode ................................................................... 19
Pin Configuration and Function Descriptions ............................. 8
Setting the Output Slope in Measurement Mode .................. 19
Typical Performance Characteristics ............................................. 9
Controller Mode ......................................................................... 20
Theory of Operation ...................................................................... 13
Constant Power Operation ....................................................... 20
Applications Information .............................................................. 14
Increasing the Dynamic Range of the ADL5513 ................... 22
Basic Connections ...................................................................... 14
Evaluation Board ............................................................................ 23
Input Signal Coupling ................................................................ 14
Outline Dimensions ....................................................................... 25
Output Filtering .......................................................................... 14
Ordering Guide .......................................................................... 25
Output Interface ......................................................................... 15
REVISION HISTORY
8/2017—Rev. 0 to Rev. A
Change to Figure 2 ........................................................................... 8
Updated Outline Dimensions ...................................................... 25
Changes to Ordering Guide .......................................................... 25
10/2008—Revision 0: Initial Version
Rev. A | Page 2 of 25
Data Sheet
ADL5513
SPECIFICATIONS
VS = 5 V, TA = 25°C, Z0 = 50 Ω, Pin INHI and Pin INLO are ac-coupled, continuous wave (CW) input, single-ended input drive, VOUT
tied to VSET, error referred to best-fit line (linear regression −20 to −40 dBm), unless otherwise noted. (Temperature adjust voltage
optimized for 85°C.)
Table 1.
Parameter
OVERALL FUNCTION
Maximum Input Frequency
FREQUENCY = 100 MHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Logarithmic Slope
Logarithmic Intercept
Input Impedance
FREQUENCY = 900 MHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Conditions
Min
Typ
1
PIN = −10 dBm
PIN = −50 dBm
1.50
0.64
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
+25°C < TA < +85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
19.5
PIN = −10 dBm
PIN = −50 dBm
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
25°C < TA < 85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
Rev. A | Page 3 of 25
1.63
0.79
75
64
58
6
−58
0.27
0.003
−0.14
+0.15/−0.33
+0.23/−0.43
0.8
+0.12/−0.31
±0.31
+0.74
+0.35/−0.18
+0.25/−0.47
+0.52/−0.24
21
−87
1.3/0.4
Max
Unit
4000
MHz
1.76
0.94
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
22.5
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV/dB
dBm
kΩ/pF
1.64
0.79
76
70
68
8
−62
0.2
0.002
0.34
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
+0.25/−0.3
+0.2/−0.53
+0.72/−0.1
+0.2/−0.3
+0.28/−0.37
0.7
+0.4/−0.36
+0.37/−0.5
+0.67/−0.28
dB
dB
dB
dB
dB
dB
dB
dB
dB
ADL5513
Parameter
Logarithmic Slope
Logarithmic Intercept
Input Impedance
FREQUENCY = 1900 MHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Logarithmic Slope
Logarithmic Intercept
Input Impedance
FREQUENCY = 2140 MHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Data Sheet
Conditions
Min
PIN = −10 dBm
PIN = −50 dBm
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
25°C < TA < 85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
PIN = −10 dBm
PIN = −50 dBm
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
25°C < TA < 85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
Logarithmic Slope
Logarithmic Intercept
Input Impedance
Rev. A | Page 4 of 25
Typ
21
−88
1.3/0.4
Max
Unit
mV/dB
dBm
kΩ/pF
1.66
0.80
75
70
68
8
−62
0.25
0.0012
0.52
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
+0.14/−0.41
+0.19/−0.51
0.9
+0.1/−0.38
+0.37/−0.26
0.83
+0.55/−0.3
+0.79/−0.16
+0.62/−0.41
21
−88
0.6/0.5
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV/dB
dBm
kΩ/pF
1.66
0.82
77
70
66
8
−62
0.33
0.02
0.23
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
±0.28
+0.2/−0.52
+0.7/−0.1
+0.15/−0.35
+0.24/−0.41
0.77
+0.2/−0.6
+0.1/−0.94
+0.8/−0.2
21
−89
0.5/0.5
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV/dB
dBm
kΩ/pF
Data Sheet
Parameter
FREQUENCY = 2600 MHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Logarithmic Slope
Logarithmic Intercept
Input Impedance
FREQUENCY = 3.6 GHz
Output Voltage: High Power Input
Output Voltage: Low Power Input
±3.0 dB Dynamic Range
±1.0 dB Dynamic Range
±0.5 dB Dynamic Range
Maximum Input Level, ±1.0 dB
Minimum Input Level, ±1.0 dB
Deviation at TA = 25°C
Deviation vs. Temperature
Logarithmic Slope
Logarithmic Intercept
Input Impedance
SETPOINT INPUT
Nominal Range
ADL5513
Conditions
Min
PIN = −10 dBm
PIN = −50 dBm
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
25°C < TA < 85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
PIN = −10 dBm
PIN = −50 dBm
PIN = −10 dBm
PIN = −30 dBm
PIN = −50 dBm
Deviation from output at TA = 25°C
25°C < TA < 85°C; PIN = −10 dBm
−40°C < TA < +25°C; PIN = −10 dBm
25°C < TA < 125°C; PIN = −10 dBm
25°C < TA < 85°C; PIN = −30 dBm
−40°C < TA < +25°C; PIN = −30 dBm
25°C < TA < 125°C; PIN = −30 dBm
25°C < TA < 85°C; PIN = −50 dBm
−40°C < TA < +25°C; PIN = −50 dBm
25°C < TA < 125°C; PIN = −50 dBm
Pin VSET
Log conformance error ≤ ±1 dB, RF input = 8 dBm
Log conformance error ≤ ±1 dB, RF input = −62 dBm
Logarithmic Scale Factor
Input Impedance
Rev. A | Page 5 of 25
Typ
Max
Unit
1.67
0.83
80
74
69
7
−67
0.33
0.02
0.01
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
+0.2/−0.4
+0.05/−0.68
+0.75/−0.05
+0.1/−0.37
+0.25/−0.4
0.8
+0.2/−0.6
±0.5
1.13
21
−89
0.4/0.6
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV/dB
dBm
kΩ/pF
1.74
0.84
76
62
58
1
−61
0.43
−0.05
−0.14
V
V
dB
dB
dB
dBm
dBm
dB
dB
dB
+0.32/−0.28
+0.27/−0.54
+0.58/−0.21
+0.3/−0.22
+0.38/−0.33
+0.67/−0.05
+0.41/−0.37
+0.41/−0.62
+0.8/−0.18
22.5
−87
0.5/0.4
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV/dB
dBm
kΩ/pF
2
0.58
47.1
40
V
V
dB/ V
kΩ
ADL5513
Parameter
OUTPUT INTERFACE
Voltage Swing
Capacitance Drive
Capacitance Drive
Current Source/Sink
Output Noise
PULSE RESPONSE TIME
Fall Time
Rise Time
Fall Time
Rise Time
Small Signal Video Bandwidth (or Envelope
Bandwidth)
TEMPERATURE ADJUST/POWER-DOWN
INTERFACE
Temperature Adjust Useful Range
Minimum Logic Level to Disable
Input Current
Enable Time
Disable Time
Input Impedance 1
POWER SUPPLY INTERFACE
Supply Voltage
Quiescent Current
Supply Current
1
Data Sheet
Conditions
Pin VOUT
VSET = 0 V, RF input = open
VSET = 0.47 V, RF input = open
CLPF = open
CLPF = 20 pF
Output held at 1 V to 1% change
RF input = 100 MHz, 0 dBm
fNOISE = 100 kHz, CLPF = open
fNOISE = 100 kHz, CLPF = 1 nF
Input level = no signal to 0 dBm, 90% to 10%
CLPF = open, 1 µs pulse width
CLPF = open, 500 µs pulse width
CLPF = open, 1 µs pulse width
CLPF = open, 500 µs pulse width
CLPF = 1000 pF, 10 µs pulse width
CLPF = 1000 pF, 500 µs pulse width
CLPF = 1000 pF, 10 µs pulse width
CLPF = 1000 pF, 500 µs pulse width
CLPF = open, 3 dB video bandwidth
Min
Typ
Max
Unit
0.47
4.7
47
1
0.64/55
V
V
pF
nF
mA
145
82
nV/√Hz
nV/√Hz
21
5.5
20
20
4.2
5.5
3.2
4.3
10
ns
µs
ns
ns
µs
µs
µs
µs
MHz
0 to 1.3
VPOS − 0.3
31
200
V
V
mA
µA
84
ns
10.8
µs
165
ns
1.2
µs
13
kΩ
Pin TADJ
Logic high disables
Logic high TADJ = 0 V
Logic low TADJ = 4.7 V
PWDN low to VOUT at 100% final value, PWDN high
to VOUT at 10% final value
CLPF = open, RF input = 0 dBm, 100 MHz,
1 µs pulse width
CLPF = 1000 pF, RF input = 0 dBm, 100 MHz,
1 µs pulse width
CLPF = open, RF input = 0 dBm, 100 MHz,
1 µs pulse width
CLPF = 1000 pF, RF input = 0 dBm, 100 MHz,
1 µs pulse width
TADJ = 0.9 V, sourcing 70 µA
Pin VPOS
2.7
25°C, RF input = −55 dBm
When disabled
See the Temperature Compensation of Output Voltage section.
Rev. A | Page 6 of 25
5.5
31
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