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Power Detector. LMH2120 Datasheet

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Power Detector. LMH2120 Datasheet






LMH2120 Detector. Datasheet pdf. Equivalent




LMH2120 Detector. Datasheet pdf. Equivalent





Part

LMH2120

Description

Linear RMS Power Detector



Feature


LMH2120 www.ti.com SNWS021C – JULY 2 010 – REVISED FEBRUARY 2013 LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic Range Check for Samples: LM H2120 FEATURES 1 •2 Linear Root Mean Square Response • 40 dB Linear-in-V Power Detection Range • Multi-Band Op eration from 50 MHz to 6 GHz • Lin Co nformance Better than ±0.5 dB • High ly Temperature Insensitive • Modu.
Manufacture

Texas Instruments

Datasheet
Download LMH2120 Datasheet


Texas Instruments LMH2120

LMH2120; lation Independent Response • Minimal Slope and Intercept Variation • Shutd own Functionality • Wide Supply Range from 2.7V to 5V • Tiny 6-Bump DSBGA Package APPLICATIONS • Multi Mode, Mu lti Band RF Power Control – GSM/EDGE – CDMA/CDMA2000 – W-CDMA – OFDMA – LTE • Infrastructure RF Power Con trol DESCRIPTION The LMH2120 is a 40 d B Linear RMS power detector particularly.


Texas Instruments LMH2120

suited for accurate power measurement o f modulated RF signals that exhibit lar ge peak-toaverage ratios, i.e, large va riations of the signal envelope. Such s ignals are encountered in W-CDMA and LT E cell phones. The RMS measurement topo logy inherently ensures a modulation in sensitive measurement. The device has a n RF frequency range from 50 MHz to 6 G Hz. It provides an.


Texas Instruments LMH2120

accurate, temperature and supply insens itive, output voltage that relates line arly to the RF input power in volt. The LMH2120's excellent conformance to a l inear response enables an easy integrat ion by using slope and intercept only, reducing calibration effort significant ly. The device operates with a single s upply from 2.7V to 5V. The LMH2120 has an RF power detect.

Part

LMH2120

Description

Linear RMS Power Detector



Feature


LMH2120 www.ti.com SNWS021C – JULY 2 010 – REVISED FEBRUARY 2013 LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic Range Check for Samples: LM H2120 FEATURES 1 •2 Linear Root Mean Square Response • 40 dB Linear-in-V Power Detection Range • Multi-Band Op eration from 50 MHz to 6 GHz • Lin Co nformance Better than ±0.5 dB • High ly Temperature Insensitive • Modu.
Manufacture

Texas Instruments

Datasheet
Download LMH2120 Datasheet




 LMH2120
LMH2120
www.ti.com
SNWS021C – JULY 2010 – REVISED FEBRUARY 2013
LMH2120 6 GHz Linear RMS Power Detector with 40 dB Dynamic Range
Check for Samples: LMH2120
FEATURES
1
2 Linear Root Mean Square Response
• 40 dB Linear-in-V Power Detection Range
• Multi-Band Operation from 50 MHz to 6 GHz
• Lin Conformance Better than ±0.5 dB
• Highly Temperature Insensitive
• Modulation Independent Response
• Minimal Slope and Intercept Variation
• Shutdown Functionality
• Wide Supply Range from 2.7V to 5V
• Tiny 6-Bump DSBGA Package
APPLICATIONS
• Multi Mode, Multi Band RF Power Control
– GSM/EDGE
– CDMA/CDMA2000
– W-CDMA
– OFDMA
– LTE
• Infrastructure RF Power Control
DESCRIPTION
The LMH2120 is a 40 dB Linear RMS power detector
particularly suited for accurate power measurement of
modulated RF signals that exhibit large peak-to-
average ratios, i.e, large variations of the signal
envelope. Such signals are encountered in W-CDMA
and LTE cell phones. The RMS measurement
topology inherently ensures a modulation insensitive
measurement.
The device has an RF frequency range from 50 MHz
to 6 GHz. It provides an accurate, temperature and
supply insensitive, output voltage that relates linearly
to the RF input power in volt. The LMH2120's
excellent conformance to a linear response enables
an easy integration by using slope and intercept only,
reducing calibration effort significantly. The device
operates with a single supply from 2.7V to 5V. The
LMH2120 has an RF power detection range from -35
dBm to 5 dBm and is ideally suited for use in
combination with a directional coupler. Alternatively, a
resistive divider can be used.
The device is active for EN = High, otherwise it is in a
low power consumption shutdown mode. To save
power and prevent discharge of an external filter
capacitance, the output (OUT) is high impedance
during shutdown.
The LMH2120 power detector is offered in a tiny 6-
bump DSBGA package.
10
RF
PA
COUPLER
ANTENNA
1
50:
VDD
RFIN
A1
B1
A2
LMH2120
OUT
EN C2
C1, B2
GND
ADC
0.1
85°C
25°C
-40°C
0.01
-50 -40 -30 -20 -10 0 10
RF INPUT POWER (dBm)
Figure 1. Typical Application
Figure 2. Output Voltage vs. RF Input Power at
1900 MHz
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated




 LMH2120
LMH2120
SNWS021C – JULY 2010 – REVISED FEBRUARY 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1)(2)
Supply Voltage
VDD - GND
RF Input
Input power
DC Voltage
Enable (EN) Input Voltage
ESD Tolerance (3)
Human Body Model
Machine Model
Charge Device Model
Storage Temperature Range
Junction Temperature (4)
For soldering specifications:
See product folder at www.ti.com and SNOA549
5.5V
12 dBm
1V
GND-0.4V < VEN and VEN<Min (VDD+0.4, 3.6V)
2000V
200V
1000V
65°C to 150°C
150°C
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not ensured. For ensured specifications and the test
conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) Human body model, applicable std. MIL-STD-883, Method 3015.7. Machine model, applicable std. JESD22–A115–A (ESD MM std of
JEDEC). Field-Induced Charge-Device Model, applicable std. JESD22–C101–C. (ESD FICDM std. of JEDEC)
(4) The maximum power dissipation is a function of TJ(MAX) , θJA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) - TA)/θJA. All numbers apply for packages soldered directly into a PC board.
Operating Ratings (1)
Supply Voltage
2.7V to 5V
Temperature Range
40°C to +85°C
RF Frequency Range
50 MHz to 6 GHz
RF Input Power Range
Package Thermal Resistance θJA(2)
35 dBm to 5 dBm
166.7°C/W
(1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional, but specific performance is not ensured. For ensured specifications and the test
conditions, see the Electrical Characteristics.
(2) The maximum power dissipation is a function of TJ(MAX) , θJA. The maximum allowable power dissipation at any ambient temperature is
PD = (TJ(MAX) - TA)/θJA. All numbers apply for packages soldered directly into a PC board.
2
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Product Folder Links: LMH2120
Copyright © 2010–2013, Texas Instruments Incorporated




 LMH2120
LMH2120
www.ti.com
SNWS021C – JULY 2010 – REVISED FEBRUARY 2013
2.7 V and 4.5V DC and AC Electrical Characteristics
Unless otherwise specified, all limits are ensured to TA = 25°C, VDD = 2.7V and 4.5V (worst case of the 2 is specified), RFIN=
1900 MHz CW (Continuous Wave, unmodulated). Boldface limits apply at the temperature extremes (1).
Symbol
Parameter
Condition
Min
Typ
Max
Units
(2)
(3)
(2)
Supply Interface
IDD
Supply Current
Active mode: EN = High, no signal
present at RFIN.
Shutdown: EN = LOW,
no signal present at
RFIN
VBAT = 2.7V
VBAT = 4.5V
2.9
3.5
4.0
mA
3.8
4.7
5.0
µA
4.7
5.7
6.1
EN = LOW, RFIN = 0
dBm, 1900 MHz
VBAT = 2.7V
VBAT = 4.5V
3.8
4.7
5.0
µA
4.7
5.7
6.1
PSRR
Power Supply Rejection Ratio
RFIN = -10 dBm, 1900 MHz, 2.7V <
VBAT < 5V
50
60
dB
Logic Enable Interface
VLOW
EN logic LOW input level
(Shutdown mode)
VHIGH
EN logic HIGH input level
IEN
Current into EN pin
Input / Output Interface
0.6
V
1.1
50
nA
RIN
VOUT
Input Resistance
Minimum Output Voltage
(Pedestal)
No Input Signal
44
50
56
18
29
33
mV
ROUT
IOUT
Output Resistance
Output Sinking Current
Output Sourcing Current
EN = HIGH, RFIN = -10 dBm, 1900
MHz, ILOAD = 1 mA, DC measurement
1
2
3
RFIN = -10 dBm, 1900 MHz, OUT
connected to 2.5V
30
25
42
mA
RFIN = -10 dBm, 1900 MHz, OUT
connected to GND
36
31
45
IOUT, SD
en
Output Leakage Current in
Shutdown Mode
Output Referred Noise (4)
EN = LOW, OUT connected to 2V
RFIN = -10 dBm, 1900 MHz, output
spectrum at 10 kHz
80
nA
5
µV/Hz
vn
Output Referred Noise Integrated Integrated over frequency band 1 kHz -
(4)
6.5 kHz, RFIN = -10 dBm, 1900 MHz
390
Timing Characteristics
µVRMS
tON
Turn-on Time from shutdown
RFIN = -10 dBm, 1900 MHz, EN LOW-
to-HIGH transition to OUT at 90%
13
18
µs
tR
Rise Time
Signal at RFIN from -20 dBm to 0 dBm,
10% to 90%, 1900 MHz
7
µs
tF
Fall Time
Signal at RFIN from 0 dBm to -20 dBm,
90% to 10%, 1900 MHz
18
µs
(1) Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very
limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under
conditions of internal self-heating where TJ > TA.
(2) All limits are ensured by test or statistical analysis.
(3) Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary
over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped
production material.
(4) This parameter is ensured by design and/or characterization and is not tested in production.
Copyright © 2010–2013, Texas Instruments Incorporated
Product Folder Links: LMH2120
Submit Documentation Feedback
3






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