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LTC5508ESC6#TRMPBF

P1-P3P4-P6P7-P8
LTC5508
1
5508fa
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
■
802.11a, 802.11b, 802.11g, 802.15
■
Multimode Mobile Phone Products
■
Optical Data Links
■
Wireless Data Modems
■
Wireless and Cable Infrastructure
■
RF Power Alarm
■
Envelope Detector
■
Temperature Compensated Internal Schottky
Diode RF Detector
■
Wide Input Frequency Range: 300MHz to 7GHz
■
Wide Input Power Range: –32dBm to 12dBm
■
Buffered Detector Output
■
Wide V
CC
Range of 2.7V to 6V
■
Low Operating Current: 550µA
■
Low Shutdown Current: <2µA
■
SC70
Package
300MHz to 7GHz RF Power
Detector with Buffered Output
in SC70 Package
The LTC
®
5508 is an RF power detector for RF applications
operating in the 300MHz to 7GHz range. A temperature
compensated Schottky diode peak detector and buffer
amplifier are combined in a small SC70 package. The
supply voltage range is optimized for operation from a
single lithium-ion cell or 3xNiMH.
The RF input voltage is peak detected using an on-chip
Schottky diode. The detected voltage is buffered and
supplied to the V
OUT
pin. A power saving shutdown mode
reduces supply current to less than 2µA.
The LTC5508 operates with input power levels from
–32dBm to 12dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
300MHz to 7GHz RF Power Detector
LTC5508
6
2
1
4
5
3
100pF 0.1µF
V
CC
V
OUT
V
CC
V
OUT
RF
IN
GND
SHDN
DISABLE ENABLE
33pF
5508 TA01
RF
INPUT
GND
Output Voltage vs RF Input Power
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 TA02
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 25°C
7GHz
1GHz
2GHz
6GHz
4GHz
LTC5508
2
5508fa
V
CC
, V
OUT
to GND .................................... –0.3V to 6.5V
RF
IN
Voltage ......................................(V
CC
± 1.3V) to 7V
SHDN Voltage to GND ................ –0.3V to (V
CC
+ 0.3V)
I
VOUT
...................................................................... 5mA
Operating Temperature Range (Note 2) .. – 40°C to 85°C
Maximum Junction Temperature ......................... 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
SC6 PART
MARKING
T
JMAX
= 125°C, θ
JA
= 256°C/W
LAAD
LTC5508ESC6
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
(Note 1)
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.6V, SHDN = V
CC
= HI, SHDN = 0V = LO, RF Input Signal is Off,
unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Operating Voltage ● 2.7 6 V
I
VCC
Shutdown Current SHDN = LO ● 2 µA
I
VCC
Operating Current SHDN = HI, I
VOUT
= 0mA ● 0.55 0.85 mA
V
OUT
V
OL
(No RF Input) R
LOAD
= 2k, SHDN = HI, Enabled 150 250 400 mV
SHDN = LOW, Disabled 1 mV
V
OUT
Output Current V
OUT
= 1.75V, V
CC
= 2.7V, ∆V
OUT
= 10mV ● 12 mA
V
OUT
Enable Time SHDN = HI, C
LOAD
= 33pF, R
LOAD
= 2k ● 820 µs
V
OUT
Bandwidth C
LOAD
= 33pF, R
LOAD
= 2k (Note 4) 2 MHz
V
OUT
Load Capacitance (Note 6) ● 33 pF
V
OUT
Slew Rate V
RFIN
= 2V Step, C
LOAD
= 33pF, R
LOAD
= 2k (Note 3) 5 V/µs
V
OUT
Noise V
CC
= 3V, Noise BW = 1.5MHz, 50Ω RF Input Termination 2 mV
P-P
SHDN Voltage, Chip Disabled V
CC
= 2.7V to 6V ● 0.35 V
SHDN Voltage, Chip Enabled V
CC
= 2.7V to 6V ● 1.4 V
SHDN Input Current SHDN = 3.6V ● 24 40 µA
RF
IN
Input Frequency Range 300 to 7000 MHz
RF
IN
Input Power Range RF Frequency = 300MHz to 7GHz (Note 5, 6) V
CC
= 2.7V to 6V –32 to 12 dBm
RF
IN
AC Input Resistance F = 1000MHz, Pin = –25dBm 150 Ω
RF
IN
Input Shunt Capacitance F = 1000MHz, Pin = –25dBm 0.6 pF
Consult LTC Marketing for parts specified with wider operating temperature ranges.
6 RF
IN
5 GND
4 V
CC
SHDN 1
TOP VIEW
SC6 PACKAGE
6-LEAD PLASTIC SC70
GND 2
V
OUT
3
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Specifications over the –40°C to 85°C operating temperature
range are assured by design, characterization and correlation with
statistical process controls.
Note 3: The rise time at V
OUT
is measured between 0.5V and 1.5V.
Note 4: Bandwidth is calculated using the 10% to 90% rise time equation:
BW = 0.35/rise time.
Note 5: RF performance is tested at 1800MHz
Note 6: Guaranteed by design.
LTC5508
3
5508fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Typical Detector Characteristics,
300MHz
Typical Detector Characteristics,
1000MHz
Typical Detector Characteristics,
2000MHz
Typical Detector Characteristics,
3000MHz
Typical Detector Characteristics,
4000MHz
Typical Detector Characteristics,
5000MHz
Typical Detector Characteristics,
6000MHz
Typical Detector Characteristics,
7000MHz
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G01
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G02
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G03
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= –40°C
T
A
= 25°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G04
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G05
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G06
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G07
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5508 G08
100
1000
–32 –28 –24 –20 –16 –12 –8 –4 0 84
12
V
CC
= 3.6V
T
A
= 85°C
T
A
= 25°C
T
A
= –40°C
P1-P3P4-P6P7-P8

LTC5508ESC6#TRMPBF

Mfr. #:
Buy LTC5508ESC6#TRMPBF
Manufacturer:
Analog Devices Inc.
Description:
RF Detector 300MHz to 7GHz RF Pwr Detector w/ Bufed
Lifecycle:
New from this manufacturer.
Delivery:
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