LT5504EMS8 Linear Technology, LT5504EMS8 Datasheet

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LT5504EMS8

Manufacturer Part Number
LT5504EMS8
Description
IC MEASURING RECEIVER RF 8-MSOP
Manufacturer
Linear Technology
Datasheet

Specifications of LT5504EMS8

Function
RF Measuring Receiver
Frequency
800MHz ~ 2.7GHz
Rf Type
CDMA, GSM, TDMA, WCDMA
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Pin Count
8
Screening Level
Industrial
Package Type
MSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
INPUT
RF
RF Frequency Range: 800MHz to 2.7GHz
Ultra Wide Dynamic Range: 75dB at 900MHz
Wide Power Supply Range: 2.7V to 5.25V
Low Supply Current: 14.7mA at 3V
8-Lead MS0P Package
RSSI Measurements
Receive AGC
Transmit Power Control
ASK and Envelope Demodulation
GSM/TDMA/CDMA/WCDMA
ENABLE
R1
82Ω
1nF
C2
EN
LT5504
RF +
RF –
U
DETECTOR
100pF
RF
C1
U
V
CC
GND
3V
DETECTOR
IF
• • •
DETECTOR
IF
5504 TA01a
DESCRIPTIO
The LT
grated measuring receiver, capable of detecting a wide
dynamic range RF signal from –75dBm to +5dBm. The
logarithm of the RF signal is precisely converted into a
linear DC voltage. The LT5504 consists of RF/IF limiters,
an LO buffer amplifier, a limiting mixer, a 3rd-order
450MHz integrated low pass filter, RF/IF detectors and an
output interface. The ultrawide dynamic range is achieved
by simultaneously measuring the RF signal and a down-
converted IF signal obtained using the on-chip mixer and
an external local oscillator. The RF- and IF-detected sig-
nals are summed to generate an accurate linear DC voltage
proportional to the input RF voltage (or power) in dB. The
output is buffered with a low output impedance driver.
V
OUT
LO
, LTC and LT are registered trademarks of Linear Technology Corporation.
10pF
200Ω
R2
C3
LO
INPUT
®
5504 is an 800MHz to 2700MHz monolithic inte-
RF Measuring Receiver
OUTPUT
800MHz to 2.7GHz
U
2.4
2.0
1.6
1.2
0.8
0.4
0
–80
f
f
AVERAGE SLOPE:23mV/dB
Variation vs RF Input Power
RF
IF
–70
Output Voltage and Slope
= 240MHz
= 900MHz
–60
–50
PIN (dBm)
–40 –30
–20 –10
LT5504
5504 TA01b
0
10
–2
–4
–6
1
5504f
6
4
2
0

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LT5504EMS8 Summary of contents

Page 1

... IF signal obtained using the on-chip mixer and an external local oscillator. The RF- and IF-detected sig- nals are summed to generate an accurate linear DC voltage proportional to the input RF voltage (or power) in dB. The output is buffered with a low output impedance driver. , LTC and LT are registered trademarks of Linear Technology Corporation OUTPUT ...

Page 2

... Input = –70dBm Input = –20dBm Input = 0dBm Input from –50dBm to –20dBm Input = –70dBm Input = –20dBm Input = 0dBm Input from –50dBm to –20dBm ORDER PART NUMBER OUT LT5504EMS8 MS8 PART MARKING LTGP MIN TYP MAX UNITS 800 to 2700 MHz 1.7 V 850 to 3100 MHz 14 dB ...

Page 3

ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER Output Voltage 2500MHz 2260MHz RF LO Linear Dynamic Range (Note 4) Output Voltage Average Slope Output Interface Current Drive Capability Output Noise Spectral Density Output Response Time (Note 5) Power Up/Down ...

Page 4

LT5504 W U TYPICAL PERFOR A CE CHARACTERISTICS Output Slope Variation vs RF Input Power and Frequency 240MHz IF AVERAGE SLOPE: 23mV/ 900MHz 1.9GHz RF –2 50% VARIATION OR ...

Page 5

CTIO S V (Pins Power Supply Pins. These pins must be CC tied together at the part as close as possible, and should be decoupled using 1000pF capacitors (Pin 2): ...

Page 6

LT5504 U U APPLICATIO S I FOR ATIO 1: 63.56Ω –j98.05Ω 900.00MHz 2: 26.69Ω 3 –j42.90Ω 1.90GHz 3: 28.88Ω –j27.76Ω 2.50GHz 2 START: 100MHz Figure 1. Differential RF Input Impedance MATCHING NETWORK C S1 3.3pF RF INPUT L SH 3.3nH ...

Page 7

... Figure 7. Component Side Layout of Evaluation Board Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. W ...

Page 8

... SEATING PLANE 0.22 – 0.38 0.13 ± 0.05 (.009 – .015) (.005 ± .002) 0.65 MSOP (MS8) 1001 (.0256) BCS ≤ 5.25V Offset Control, Adjustable Gain and Offset Voltage LT/TP 0305 500 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2002 5504f ...

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