|
|
PDF LTC5583 Data sheet ( Hoja de datos )
| Número de pieza | LTC5583 | |
| Descripción | Matched Dual-Channel 6GHz RMS Power Detector | |
| Fabricantes | Linear Technology Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LTC5583 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
|
No Preview Available !
FEATURES
n Frequency Range: 40MHz to 6GHz
n Linear Dynamic Range: Up to 60dB
n ±0.5dB (Typ) Accuracy Over Temperature
n 40dB Channel-to-Channel Isolation at 2GHz Even
with Single-Ended RF Inputs
n Matched Dual-Channel Outputs: <1.25dB (Typ)
n Single-Ended RF Inputs—No Transformer Required
n Accurate RMS Power Measurement of High Crest
Factor Modulated Waveforms
n Difference Output Provides VSWR Measurement
n Fast Envelope Detector Outputs
n Fast Response Time: 140ns Rise Time
n Small 4mm × 4mm QFN24 Package
APPLICATIONS
n VSWR Monitor
n MIMO Transmit Power Control
n Basestation PA Control
n Transmit and Receive Gain Control
n RF Instrumentation
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 7262661, 7317357, 7622981.
LTC5583
Matched Dual-Channel
6GHz RMS Power Detector
DESCRIPTION
The LTC®5583 is a dual-channel RMS power detector,
capable of measuring two AC signals with wide dynamic
range, from –59dBm to 4dBm, depending on frequency.
Each AC signal’s power in decibel-scaled value is precisely
converted to a DC voltage on a linear scale, independent
of the crest factor of the input signal waveforms. The
LTC5583 is suitable for precision power measurement and
level control for a variety of RF standards, including LTE,
EDGE, W-CDMA, CDMA2000, TD-SCDMA, and WiMAX.
Good channel-to-channel isolation is necessary for oper-
ating the dual channels simultaneously. For applications
where the two input signals are at the same frequency (e.g.
measuring VSWR), the LTC5583 provides 40dB isolation
at 2.14GHz even with single-ended inputs. No baluns are
needed. When the two input signals are at different frequen-
cies, the isolation can be as high as 50dB. The isolation
can be improved to >55dB with differential inputs.
The power difference of the two input signals is provided
at a difference output pin. Each channel also has a fast
envelope detector, which tracks the RF input signal’s en-
velope and outputs a voltage directly proportional to the
signal’s instantaneous power. The envelope detectors can
be disabled to reduce power consumption.
TYPICAL APPLICATION
Block Diagram
ENVA
ENVELOPE
DETECT
IN+A IN–A
RMS
DETECT
ENVB
ENVELOPE
DETECT
LTC5583
RMS
DETECT
IN+B
IN–B
www.DataSheet.in
VOA
+ VODF
–
DIFFERENCE
AMPLIFIER
VOB
INV VOS
5583 BD
Output Voltage and Linearity Error
vs RF Input Power, 2140MHz CW
Inputs, Single-Ended Drive
2.5 2.5
2.0
2.0 1.5
1.0
1.5 0.5
0
1.0 –0.5
85°C, CH A
85°C, CH B –1.0
0.5
25°C, CH A
25°C, CH B
–1.5
–40°C, CH A –2.0
–40°C, CH B
0 –2.5
–65 –55 –45 –35 –25 –15 –5 5
INPUT POWER (dBm)
5583 TA01b
5583f
1
1 page  
LTC5583
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, –40°C to 85°C, otherwise specifications are at TA = 25°C, VCC = 3.3V, EN = 3.3V. Test circuits are shown in
Figures 1 and 2 (Note 2).
PARAMETER
VODF Output DC Voltage
Output Impedance
IOUT
Rise Time, 10% to 90%
Fall Time, 90% to 10%
ENVA
ENVB
Output DC Voltage
Output Impedance
IOUT
Rise Time, 10% to 90%
Fall Time, 90% to 10%
–3dB Bandwidth
Control Interface
EN Input High Voltage
Input Low Voltage
Input Current
INV Input High Voltage
Input Low Voltage
Input Current
VOS Input Voltage Range
Input Current
Power Supply
Supply Voltage
Supply Current
Supply Current
Shutdown Current
CONDITIONS
No RF Signal Present, VOS = 0V
Source/Sink
50mV to 1.8V, fRF = 100MHz, CFLTRA = CFLTRB = 8.2nF
1.8V to 50mV, fRF = 100MHz, CFLTRA = CFLTRB = 8.2nF
No RF Signal Present
Source/Sink
0.9V to 2.1V
2.1V to 0.9V
Applied Voltage = 3.3V
Applied Voltage = 3.3V
Applied Voltage = 2.4V
Envelope Detectors Turned Off
Envelope Detectors Turned On
EN = 0V, VCC = 3.5V
MIN TYP MAX
0.05
5
5/5
170
3.5
2.15
140
4.0/1.8
11
11
50
l2
l
2
0
0.3
100 180
1
0
2.4
77
3.1 3.3 3.5
80.5 100
90.1
0.1 10
UNITS
V
Ω
mA
ns
μs
V
Ω
mA
ns
ns
MHz
V
V
μA
V
V
μA
V
μA
V
mA
mA
μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC5583 is guaranteed functional over the temperature range
from –40°C to 85°C.
Note 3: Logarithmic Intercept is an extrapolated input power level from the
best-fit log-linear straight line, where the output voltage is 0V.
Note 4: Operation over a wider frequency range is possible with reduced
performance. Consult the factory for information and assistance.
Note 5: Linearity error is the difference in dB between the actual output
and the best-fit straight line at 25°C (using linear regression between
PIN = –50dBm and 0dBm for 450MHz, 880MHz, 2140MHz, 2700MHz;
between PIN = –40dBm and 0dBm for 3600MHz, 5800MHz). The dynamic
range is defined as the range of input power over which the linearity error
is within ±1dB.
Note 6: Input A to Output B (Channel A to Channel B) isolation is defined
as the ratio of input power levels at the two channels when the interfering
channel (Channel A with higher power) results in a 1dB output deviation
in the interfered channel (Channel B with lower power) and vice versa.
Sweep one channel input power level while holding the other channel input
at –45dBm for 450MHz, 880MHz, 2140MHz, 2700MHz, 3600MHz, and at
–35dBm for 5800MHz.
Note 7: For frequency separation = 0Hz between the two input signals,
channel-to-channel isolation is a function of the phase difference between
these two signals. The worst-case isolation is assumed.
www.DataSheet.in
5583f
5
5 Page 
LTC5583
TYPICAL PERFORMANCE CHARACTERISTICS
VCC = 3.3V, EN = 3.3V, TA = 25°C, unless otherwise noted. For temperature compensation of logarithmic intercept at 5800MHz,
set RP1 = Open, RP2 = 0, RT1 = 10kΩ, RT2 = 1.47kΩ. See Figure 2.
Output Voltage and Linearity Error
vs RF Input Power, 5800MHz CW
Inputs, Differential Drive
2.5 2.5
2.0
2.0 1.5
Difference Output and Linearity
Error vs RF Input Power, 5800MHz
CW Inputs, Differential Drive
2.5
VOS = 1.2V, INV = 0V
2.5
SWEEP CH B INPUT
2.0
2.0
HOLD CH A INPUT = –20dBm
1.5
1.0 1.0
1.5 0.5 1.5 0.5
00
1.0
85°C, CH A
85°C, CH B
0.5 25°C, CH A
25°C, CH B
–40°C, CH A
–40°C, CH B
0
–55 –45 –35 –25 –15 –5
INPUT POWER (dBm)
–0.5
–1.0
–1.5
–2.0
–2.5
5 10
5583 G31
1.0
0.5
0
–55
–0.5
–1.0
SWEEP CH A INPUT
HOLD CH B
INPUT = –20dBm
–45 –35 –25 –15
85°C
–1.5
25°C –2.0
–40°C –2.5
–5 5 10
INPUT POWER (dBm)
5583 G32
Output Voltage and Linearity Error
vs RF Input Power, 5800MHz CW
Inputs, Differential Drive, 3 Devices
2.5 2.5
2.0
2.0 1.5
1.0
1.5 0.5
0
1.0 –0.5
–1.0
0.5
0
–55 –45 –35 –25 –15
85°C
–1.5
25°C
–2.0
–40°C
–2.5
–5 5 10
INPUT POWER (dBm)
5583 G33
Modulation Deviation vs RF
Input Power, 5800MHz Inputs,
Differential Drive
3
2
1
CW
0
WiMAX
–1
–2 DEVIATION MEASURED
FROM LINEAR REFERENCE
GENERATED WITH CW INPUT.
–3
–55 –45 –35 –25 –15
–5
INPUT POWER (dBm)
5 10
5583 G34
Channel Matching vs RF Input
Power, 5800MHz CW Inputs,
Differential Drive, 3 Devices
3
0.09
2 0.06
1 0.03
00
–1 –0.03
–2
–3
–55 –45 –35 –25 –15
85°C –0.06
25°C
–40°C
–0.09
–5 5 10
INPUT POWER (dBm)
5583 G35
Input A to Output B Isolation,
Input B to Output A Isolation,
5800MHz CW Inputs, Differential Drive
2.5
A m B, FREQ SEP = 0Hz NOTE 7 A m B INDICATES:
B m A, FREQ SEP = 0Hz
CH A = INTERFERING CHANNEL
2.0
A m B, FREQ SEP = 1MHz
B m A, FREQ SEP = 1MHz
CH B = INTERFERED CHANNEL
A m B, FREQ SEP = 10MHz
B m A INDICATES:
B m A, FREQ SEP = 10MHz
1.5
CH B = INTERFERING CHANNEL
CH A = INTERFERED CHANNEL
1.0
0.5
0
–35 –30 –25 –20 –15 –10 –5 0
INTERFERING CHANNEL
INPUT POWER (dBm)
INTERFERED CHANNEL
INPUT = –35dBm,
INTERFERING CHANNEL
INPUT SWEPT
FREQ SEP = FREQUENCY
SEPARATION BETWEEN
CH A INPUT AND CH B INPUT
5 10
5583 G36
5583f
11
www.DataSheet.in
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LTC5583.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LTC5582 | 40MHz to 10GHz RMS Power Detector |  Linear Technology |
| LTC5583 | Matched Dual-Channel 6GHz RMS Power Detector | Linear Technology Corporation |
| LTC5584 | 30MHz to 1.4GHz IQ Demodulator | Linear Technology |
| LTC5585 | Wideband IQ Demodulator |  Linear |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |