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LT5537EDDB#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
1
LT5537
5537fa
■
Linear-to-Log Signal Level Conversion
■
Received Signal Strength Indication (RSSI)
■
RF Power Control
■
RF/IF Power Detection
■
Receiver RF/IF Gain Control
■
Envelope Detection
■
ASK Receiver
Wide Dynamic Range
RF/IF Log Detector
■
Low Frequency to 1000MHz Operation
■
83dB Dynamic Range with ±1dB Nonlinearity
at 200MHz
■
Sensitivity –76dBm or Better at 200MHz
■
Log-Linear Transfer Slope of 20mV/dB
■
Supply Voltage Range: 2.7V to 5.25V
■
Supply Current: 13.5mA at 3V
■
Tiny 8-Lead (3mm × 2mm) DFN Package
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
The LT
®
5537 is a wide dynamic range RF/IF detector,
operational from below 10MHz to 1000MHz. The lower
limit of the operating frequency range can be extended to
near DC by the use of an external capacitor. The input
dynamic range at 200MHz with ±3dB nonlinearity is 90dB
(from –76dBm to 14dBm, single-ended 50Ω input). The
detector output voltage slope is nominally 20mV/dB, and
the typical temperature coefficient is 0.01dB/°C at 200MHz.
1
OFFSET
CANCELLATION
DETECTOR CELLS
EXPOSED PAD
BANDGAP REFERENCE
AND BIASING
OUTPUT
BUFFER
ENBL
3
IN
–
2
IN
+
5
CAP
–
OUT
5537 TA01a
V
EE
OPTIONAL
4
CAP
+
7k
7k
15nF
RF IN
15nF
8
7
9
V
CC
1µF
6
1nF
7.2k
INPUT POWER (dBm)
–80
0
V
OUT
(V)
LINEARITY ERROR (dB)
0.4
0.8
1.2
1.6
2.0
2.4
–40°C
–3
–2
–1
0
1
2
3
–60 –40 –20 0
5537 TA01b
20
85°C
25°C
V
CC
= ENBL = 3V
Output Voltage, Linearity Error
vs Input Power at 200MHz
2
LT5537
5537fa
(Note 1)
Power Supply Voltage ........................................... 5.5V
Enable Voltage ................................... –0.2V, V
CC
+ 0.2V
Input Power (Note 2) ......................................... 22dBm
Operating Ambient Temperature Range .. – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 125°C
Maximum Junction Temperature ......................... 125°C
ABSOLUTE AXI U RATI GS
WWWU
Consult LTC Marketing for parts specified with wider operating temperature ranges.
PACKAGE/ORDER I FOR ATIO
UU
W
LT5537EDDB
ORDER PART NUMBER
DDB PART MARKING
LBJR
θ
JA
= 76°C/W
EXPOSED PAD (PIN 9) SHOULD BE SOLDERED TO PCB
TOP VIEW
9
DDB PACKAGE
8-LEAD (3mm 2mm) PLASTIC DFN
5
6
7
8
4
3
2
1ENBL
IN
+
IN
–
CAP
+
OUT
V
EE
V
CC
CAP
–
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
V
CC
= 3V, ENBL = 3V, T
A
= 25°C, unless otherwise specified. (Notes 3, 4)
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Signal Input
Input Frequency Range (Note 5) 10 to 1000 MHz
Maximum Input Power for Monotonic Output 50Ω Termination
200MHz 14.0 dBm
600MHz 11.6 dBm
1GHz 9.4 dBm
DC Common Mode Voltage V
CC
– 0.4 V
Small-Signal Impedance Measured at 200MHz 1.73kΩ //1.45pF
f = 10MHz
Linear Dynamic Range ±3dB Error 88.8 dB
±1dB Error 72.5 dB
Slope R1 = 33k (Note 8) 19.6 mV/dB
Intercept V
OUT
= 0V, Extrapolated –97 dBm
Sensitivity (Notes 3, 7) –76.7 dBm
Temperature Coefficient P
IN
= –20dBm –0.007 dB/°C
f = 50MHz
Linear Dynamic Range ±3dB Error 90.6 dB
±1dB Error 81.0 dB
Slope R1 = 33k (Note 8) 20 mV/dB
Intercept V
OUT
= 0V, Extrapolated –96 dBm
Sensitivity (Notes 3, 7) –77.2 dBm
Temperature Coefficient P
IN
= –20dBm –0.005 dB/°C
3
LT5537
5537fa
V
CC
= 3V, ENBL = 3V, T
A
= 25°C, unless otherwise specified. (Notes 3, 4)
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
f = 100MHz
Linear Dynamic Range ±3dB Error 90.5 dB
±1dB Error 82.8 dB
Slope R1 = 33k (Note 8) 20.3 mV/dB
Intercept V
OUT
= 0V, Extrapolated –95 dBm
Sensitivity (Notes 3, 7) –77 dBm
Temperature Coefficient P
IN
= –20dBm –0.004 dB/°C
f = 200MHz
Linear Dynamic Range ±3dB Error 90.3 dB
±1dB Error 83.5 dB
Slope R1 = 33k (Note 8) 21.2 mV/dB
Intercept V
OUT
= 0V, Extrapolated –94 dBm
Sensitivity (Notes 3, 7) –76.4 dBm
Temperature Coefficient P
IN
= –20dBm 0.010 dB/°C
f = 400MHz
Linear Dynamic Range ±3dB Error 88.2 dB
±1dB Error 70.8 dB
Slope R1 = 33k (Note 8) 23.1 mV/dB
Intercept V
OUT
= 0V, Extrapolated –91 dBm
Sensitivity (Notes 3, 7) –75.3 dBm
Temperature Coefficient P
IN
= –20dBm 0.019 dB/°C
f = 600MHz
Linear Dynamic Range ±3dB Error 85.8 dB
±1dB Error 72.5 dB
Slope R1 = 33k (Note 8) 25.2 mV/dB
Intercept V
OUT
= 0V, Extrapolated –89 dBm
Sensitivity (Notes 3, 7) –74.1 dBm
Temperature Coefficient P
IN
= –20dBm 0.026 dB/°C
f = 1GHz
Linear Dynamic Range ±3dB Error 63.5 dB
±1dB Error 51.7 dB
Slope R1 = 33k (Note 8) 31.4 mV/dB
Intercept V
OUT
= 0V, Extrapolated –80 dBm
Sensitivity (Notes 3, 7) –69.2 dBm
Temperature Coefficient P
IN
= –20dBm 0.031 dB/°C
Output
Starting Voltage No RF Signal Present 0.4 V
Response Time Input from –30dBm to 0dBm, C
LOAD
= 2.5pF 110 ns
Baseband Modulation Bandwidth Output Load Capacitance = 2.5pF 6 MHz
Shutdown Mode
ENBL = High (On) 1V
ENBL = Low (Off) 0.3 V
ENBL Input Current V
ENBL
= 3V 100 µA
V
ENBL
= 0V 0 µA
Turn-On Time 100 µs
Turn-Off Time 100 µs
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT5537EDDB#TRMPBF

Mfr. #:
Buy LT5537EDDB#TRMPBF
Manufacturer:
Analog Devices Inc.
Description:
RF Detector Wide Dynamic Rng RF/IF Log Detector
Lifecycle:
New from this manufacturer.
Delivery:
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