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LTC5533 300MHz to 11GHz Precision Dual RF Power Detector
FEATURES

DESCRIPTIO
Two Independent Temperature Compensated Schottky Diode RF Peak Detectors 45dB Channel-to-Channel Isolation at 2GHz Wide Input Frequency Range: 300MHz to 11GHz* Wide Input Power Range: -32dBm to 12dBm Buffered Detector Outputs with Gain of 2x Adjustable VOUT Starting Voltage Wide VCC Range of 2.7V to 6V Low Operating Current: <500A/Channel Low Shutdown Current: <2A/Channel 4mm x 3mm DFN Package
The LTC(R)5533 is a dual channel RF power detector for RF applications operating in the 300MHz to 11GHz range. Two independent temperature compensated Schottky diode peak detectors and buffer amplifiers are combined in a small 4mm x 3mm DFN package. The RF input voltage is peak detected using on-chip Schottky diodes. The detected voltage is buffered and supplied to the VOUT pins. A power saving shutdown mode reduces current to less than 2A/channel. The initial output starting voltages can be precisely adjusted using the VOS pins. The LTC5533 operates with input power levels from -32dBm to 12dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Higher frequency operation is achievable with reduced performance. Consult factory for more information.
APPLICATIO S

PA Forward and Reverse Power Monitor Dual PA Transmit Power Control 802.11a, b, g, 802.15, WiMAX PA Linearization Fixed Wireless Access RF Power Alarm Envelope Detector
TYPICAL APPLICATIO
300MHz to 11GHz RF Power Detectors
3600 LTC5533 VCC 100pF VOS1 VCC1 VOUT1 VOS1 VCC2 0.1F 100pF VOS2 VOUT2 VOS2 RFIN1 GND1 SHDN1 RFIN2 GND2 SHDN2
5533 TA01
Output Voltage vs RF Input Power
3200 VCC = 3.6V VOS = 0V TA = 25C
39pF
VOUT OUTPUT VOLTAGE (mV)
RF1 INPUT
2800 2400 2000 1600 1200 800 400
39pF RF2 INPUT
DISABLE ENABLE
(EXPOSED PAD)
0 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm)
U
4GHz 1GHz 5GHz 500MHz 6GHz 8GHz 11GHz 10GHz 9GHz 8 12
5533 TA02
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LTC5533
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW VCC1 VOUT1 VOS1 VCC2 VOUT2 VOS2 1 2 3 13 4 5 6 9 8 7 RFIN2 GND2 SHDN2 12 RFIN1 11 GND1 10 SHDN1
VCC1, VCC2, VOUT1, VOUT2, VOS1, VOS2 ....... -0.3V to 6.5V RFIN1, RFIN2 Voltage ........................(VCC 1.25V) to 7V RFIN1, RFIN2 Power (RMS) ................................. 12dBm SHDN1, SHDN2 Voltage to GND .. -0.3V to (VCC + 0.3V) IVOUT1, IVOUT2 ........................................................ 5mA Operating Temperature Range (Note 2) .. - 40C to 85C Maximum Junction Temperature ......................... 125C Storage Temperature Range ................ - 65C to 150C
ORDER PART NUMBER LTC5533EDE
DFN PART MARKING 5533
DE12 PACKAGE 12-LEAD (4mm x 3mm) PLASTIC DFN TJMAX = 125C, JA = 40C/W EXPOSED PAD IS GND (PIN 13) MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. VCC = 3.6V, SHDN = VCC = HI, SHDN = 0V = LO, RF Input Signal is Off, VOS = 0V and SHDN = HI unless otherwise noted. Limits below are for one channel unless otherwise noted.
PARAMETER VCC Operating Voltage IVCC Operating Current IVCC Shutdown Current VOUT Start Voltage (No RF Input) VOUT Output Current VOUT Enable Time VOUT Bandwidth VOUT Load Capacitance VOUT Slew Rate VOUT Noise VOUT Shutdown Resistance VOS Voltage Range VOS Input Current SHDN Voltage, Chip Disabled SHDN Voltage, Chip Enabled SHDN Input Current RFIN Input Frequency Range RFIN Input Power Range RFIN AC Input Resistance RFIN Input Shunt Capacitance Channel to Channel Isolation RF Frequency = 300MHz to 7GHz (Note 5, 6) VCC = 2.7V to 6V f = 1000MHz, Pin = -25dBm f = 1000MHz, Pin = -25dBm f = 2GHz VOS = 1V VCC = 2.7V to 6V VCC = 2.7V to 6V SHDN = 3.6V IVOUT = 0mA SHDN = LO RLOAD = 2k, VOS = 0V SHDN = LO VOUT = 1.75V, VCC = 2.7V, VOUT < 10mV SHDN = LO to HI, CLOAD = 33pF, RLOAD = 2k CLOAD = 33pF, RLOAD = 2k (Note 4) (Note 6) VRFIN = 1V Step, CLOAD = 33pF, RLOAD = 2k (Note 3) VCC = 3V, Noise BW = 1.5MHz, 50 RF Input Termination Resistance Measured to Ground

ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN

TYP 0.45 0.01
MAX 6 0.7 2 170
UNITS V mA A mV mV mA s MHz pF V/s mVP-P
2.7
85 2
110 to 150 1 4 8 2
20 33
3 1 280 0 -0.5 1.4 22 300 to 11000 -32 to 12 220 0.65 45 36 1 0.5 0.35
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Specifications over the -40C to 85C operating temperature range are assured by design, characterization and correlation with statistical process controls.
Note 3: The rise time at VOUT is measured between 1.3V and 2.3V. Note 4: Bandwidth is calculated based on the 10% to 90% rise time equation: BW = 0.35/rise time. Note 5: RF performance is production tested at 1800MHz Note 6: Guaranteed by design.
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2
U
V A V V A MHz dBm pF dB
W
U
U
WW
W
LTC5533 TYPICAL PERFOR A CE CHARACTERISTICS (For one channel. SHDN = VCC, unless
otherwise specified.) Output Starting Voltage vs Supply Voltage (RF Input Signal Off, VOS = 0V)
140 500
VOUT OUTPUT VOLTAGE (mV)
TA = 85C 130 TA = 25C TA = -40C 125
SUPPLY CURRENT (A)
135
480 TA = -40C 460
SHUTDOWN CURRENT (nA)
120 2.5 3 5 3.5 4 4.5 SUPPLY VOLTAGE (V) 5.5 6
Typical Detector Characteristics, 300MHz
3600 3200
VOUT OUTPUT VOLTAGE (mV)
VCC = 3.6V VOS = 0V
VOUT OUTPUT VOLTAGE (mV)
2800 2400 2000 1600 1200 800 400 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm) 8 12
5533 G04
TA = -40C TA = 25C
2800 2400 2000 1600 1200 800 400 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm) 8 12
5533 G05
VOUT OUTPUT VOLTAGE (mV)
TA = 85C
Typical Detector Characteristics, 3GHz
3600 3200 VCC = 3.6V VOS = 0V 3600 3200
VOUT OUTPUT VOLTAGE (mV)
VOUT OUTPUT VOLTAGE (mV)
2800 2400 2000 1600 1200 800 400 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm) 8 12
5533 G07
2800 2400 2000 1600 1200 800 TA = 85C 400 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm) 8 12
5533 G08
VOUT OUTPUT VOLTAGE (mV)
TA = -40C TA = 25C
TA = 85C
UW
5533 G01
Supply Current vs Supply Voltage (RF Input Signal Off, VOS = 0V)
3.0 2.5 2.0 1.5 1.0 0.5
Shutdown Current vs Supply Voltage (RF Input Signal Off, VOS = 0V, SHDN = 0V)
TA = 85C
TA = 25C TA = 85C
440
TA = 25C TA = -40C 3 4.5 4 5 3.5 SUPPLY VOLTAGE (V) 5.5 6
420 2.5 3 5 3.5 4 4.5 SUPPLY VOLTAGE (V) 5.5 6
0 2.5
5533 G02
5533 G03
Typical Detector Characteristics, 1GHz
3600 3200 VCC = 3.6V VOS = 0V TA = -40C 3600 3200 2800 2400 2000 1600 1200 800 400
Typical Detector Characteristics, 2GHz
VCC = 3.6V VOS = 0V TA = -40C TA = 25C
TA = 25C
TA = 85C
TA = 85C
0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm)
8 12
5533 G06
Typical Detector Characteristics, 5GHz
VCC = 3.6V VOS = 0V 3600 3200 2800 2400
Typical Detector Characteristics, 7GHz
VCC = 3.6V VOS = 0V
TA = -40C TA = 25C
TA = -40C 2000 1600 TA = 25C 1200 800 400 TA = 85C
0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm)
8 12
5533 G09
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LTC5533 TYPICAL PERFOR A CE CHARACTERISTICS (For one channel. SHDN = VCC, unless
otherwise specified.) VOUT Slope vs RF Input Power at 300MHz
1000 VCC = 3.6V VOS = 0V 1000
VOUT SLOPE (mV/dB)
VOUT SLOPE (mV/dB)
VOUT SLOPE (mV/dB)
100 TA = -40C 10 TA = 85C TA = 25C
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
VOUT Slope vs RF Input Power at 3GHz
1000 VCC = 3.6V VOS = 0V 1000
VOUT SLOPE (mV/dB)
100 TA = -40C TA = 85C 10 TA = 25C
VOUT SLOPE (mV/dB)
VOUT SLOPE (mV/dB)
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
VOUT Variation Relative to 25C vs RF Input Power at 300MHz
3 2 VOUT VARIATION (dB) 1 0 -1 -2 -3 -30 -26 -22 -18 -14 -10 -6 -2 RF INPUT POWER (dBm) TA = 85C VCC = 3.6V VOS = 0V VOUT VARIATION (dB) 3 2 1 0 -1 -2
TA = -40C
TA = -40C
VOUT VARIATION (dB)
4
UW
4 8
5533 G10
VOUT Slope vs RF Input Power at 1GHz
VCC = 3.6V VOS = 0V 1000
VOUT Slope vs RF Input Power at 2GHz
VCC = 3.6V VOS = 0V
100 TA = -40C TA = 85C 10 TA = 25C
100 TA = -40C TA = 85C 10 TA = 25C
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
4
8
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
4
8
5533 G11
5533 G12
VOUT Slope vs RF Input Power at 5GHz
VCC = 3.6V VOS = 0V 1000
VOUT Slope vs RF Input Power at 7GHz
VCC = 3.6V VOS = 0V
100 TA = -40C TA = 85C 10 TA = 25C
100 TA = -40C TA = 85C 10 TA = 25C
4
8
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
4
8
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
4
8
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5533 G14
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VOUT Variation Relative to 25C vs RF Input Power at 1GHz
VCC = 3.6V VOS = 0V 3 2 1 0 -1 -2
VOUT Variation Relative to 25C vs RF Input Power at 2GHz
VCC = 3.6V VOS = 0V
TA = -40C
TA = 85C
TA = 85C
2
6
-3 -30 -26 -22 -18 -14 -10 -6 -2 RF INPUT POWER (dBm)
2
6
-3 -30 -26 -22 -18 -14 -10 -6 -2 RF INPUT POWER (dBm)
2
6
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LTC5533 TYPICAL PERFOR A CE CHARACTERISTICS (For one channel. SHDN = VCC, unless
otherwise specified.) VOUT Variation Relative to 25C vs RF Input Power at 3GHz
3 2 VOUT VARIATION (dB) 1 0 -1 -2 -3 -30 -26 -22 -18 -14 -10 -6 -2 RF INPUT POWER (dBm) TA = 85C VCC = 3.6V VOS = 0V
VOUT VARIATION (dB)
TA = -40C
VOUT VARIATION (dB)
Example VOUT1 - VOUT2 Mismatch with No RF Signal Input
25 PERCENTAGE DISTRIBUTION (%) PERCENTAGE DISTRIBUTION (%) VCC = 3.6V VOS = 0V TA = 25C
25
20
VOUT OUTPUT VOLTAGE (mV)
15
10
5
0
-25 -20 -15 -10 -5 0 5 10 15 20 25 VOUT1 - VOUT2 MISMATCH (mV)
5533 G22
VOUT vs RF Input Power and VOS, fRF = 2GHz
3600 3200
VOUT OUTPUT VOLTAGE (mV)
VCC = 3.6V TA = 25C
2800 VOS = 1V VOS = 0.75V VOS = 0.5V 800 400 VOS = 0V VOS = 0.25V
ISOLATION (dB)
2400 2000 1600 1200
OUTPUT DELAY (ns)
0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm)
UW
2
5533 G19
VOUT Variation Relative to 25C vs RF Input Power at 5GHz
3 2 1 0 -1 -2 -3 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm) VCC = 3.6V VOS = 0V TA = -40C 3 2 1 0 -1
VOUT Variation Relative to 25C vs RF Input Power at 7GHz
VCC = 3.6V VOS = 0V TA = -40C
TA = 85C
TA = 85C -2 -3 -26 -22 -18 -14 -10 -6 -2 2 RF INPUT POWER (dBm)
6
4
8
6
10
5533 G20
5533 G21
Example VOUT1 - VOUT2 Mismatch with -14dBm RF Signal Input at 1.8GHz
VCC = 3.6V VOS = 0V TA = 25C
VOUT vs RF Input Power and VCC Supply Voltage, fRF = 2GHz
6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000 500 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 RF INPUT POWER (dBm) VCC = 3V VCC = 4V VOS = 0V TA = 25C VCC = 6V VCC = 5V
20
15
10
5
0
-1 -0.8-0.6-0.4-0.2 0 0.2 0.4 0.6 0.8 1 VOUT1 - VOUT2 MISMATCH (dB)
5533 G23
8
12
5533 G24
Channel-to-Channel Isolation vs RF Input Frequency
-20 CH. 2 -30 CH. 1
1000 900 800 700 600 500 400
Output Delay vs RF Input Power
VCC = 3.6V VOS = 0V TA = 25C
-40
CH. 1
CH. 2
-50 VCC = 3.6V VOS = 0V TA = 25C RF PIN = +10dBm 0 2000 4000 6000 8000 10000 12000 RF INPUT FREQUENCY (MHz)
5533 G26
90% SWITCHING 300 200 50% SWITCHING 100 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm) 4 8
-60
-70
8 12
5533 G25
5533 G27
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LTC5533 TYPICAL PERFOR A CE CHARACTERISTICS
RFIN Input Impedance (Pin = 0dBm, VCC = 3.6V, TA = 25C)
FREQUENCY (GHz) 0.30 0.50 0.70 0.90 1.10 1.30 1.50 1.70 1.90 2.10 2.30 2.50 2.70 2.90 3.10 3.30 3.50 3.70 3.90 4.10 4.30 4.50 4.70 4.90 5.10 5.30 5.50 5.70 5.90 6.10 6.30 6.50 6.70 6.90 7.00 RESISTANCE () 290.45 234.41 178.25 137.31 109.17 86.30 68.65 57.48 49.79 43.56 38.67 34.82 31.68 29.13 27.17 25.73 24.56 23.18 22.31 20.73 19.88 19.40 19.05 19.08 19.55 20.85 21.94 20.60 19.29 18.69 18.53 18.74 19.79 19.75 19.99 REACTANCE () -136.22 -162.54 -170.53 -159.89 -147.57 -136.18 -121.74 -107.60 - 96.72 - 86.70 -77.91 -70.13 - 62.86 - 56.01 - 49.83 - 44.24 - 39.74 - 35.35 - 30.62 -26.88 -22.31 -18.23 -14.25 -10.21 - 6.30 - 2.84 -1.49 - 0.07 2.99 6.61 10.39 14.35 17.91 20.77 22.47
6
UW
S11 Forward Reflection Impedance
0.3000GHz-7.000GHz
5508 TA03
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LTC5533 TYPICAL PERFOR A CE CHARACTERISTICS
RFIN Input Impedance (Pin = -25dBm, VCC = 3.6V, TA = 25C)
FREQUENCY (GHz) 0.30 0.50 0.70 0.90 1.10 1.30 1.50 1.70 1.90 2.10 2.30 2.50 2.70 2.90 3.10 3.30 3.50 3.70 3.90 4.10 4.30 4.50 4.70 4.90 5.10 5.30 5.50 5.70 5.90 6.10 6.30 6.50 6.70 6.90 7.00 RESISTANCE () 216.45 190.63 161.98 133.17 113.08 94.55 75.33 63.52 55.19 48.64 43.73 39.71 36.47 33.69 31.61 29.78 28.27 26.63 26.12 24.20 23.28 22.60 22.21 22.15 22.61 23.90 24.97 23.51 22.25 21.57 21.43 21.69 22.68 22.81 23.07 REACTANCE () -76.47 -98.28 -112.03 -111.53 -109.05 -107.08 - 98.50 - 88.19 - 80.05 -72.23 - 64.81 - 58.31 - 52.27 - 46.77 - 41.25 -36.61 -32.39 -28.12 -23.97 -20.75 -16.69 -12.77 - 9.08 -5.24 -1.58 1.53 2.62 4.00 6.94 10.62 14.02 17.77 21.24 24.21 25.56
UW
S11 Forward Reflection Impedance
0.3000GHz-7.000GHz
5508 TA04
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LTC5533
PI FU CTIO S
VCC1, VCC2 (Pins 1, 4): Power Supply Voltage, 2.7V to 6V. VCC should be bypassed appropriately with ceramic capacitors. VOUT1, VOUT2 (Pins 2, 5): Detector Outputs. VOS1, VOS2 (Pins 3, 6): VOUT Offset Voltage Adjustments. These pins adjust the starting VOUT voltage when no RF signal is present. For VOS from 0V to 130mV, VOUT is unaffected by VOS. For VOS > 130mV, VOUT is the sum of VOS plus the detected RF signal. SHDN1, SHDN2 (Pin 10, 7): Shutdown Inputs. A logic low on the SHDN pin places the corresponding detector in shutdown mode. A logic high enables the detector. SHDN has an internal 160k pulldown resistor to ensure that the detector is shutdown when no SHDN input is applied. In shutdown VOUT is connected to ground via a 280 resistor. Channels can be shut down independently. GND1, GND2 (Pins 11, 8): Ground. RFIN1, RFIN2 (Pins 12, 9): RF Input Voltage. Referenced to VCC. A coupling capacitor must be used to connect to the RF signal source. These pins have internal 500 terminations, Schottky diode detectors and peak detector capacitors. Exposed Pad (Pin13): Ground.
BLOCK DIAGRA
RFSOURCE
12pF TO 200pF (DEPENDING ON APPLICATION)
RFIN 500 30k SD 31k 25pF 24k
GND
8
W
U
U
U
(One Channel)
VCC
ONE CHANNEL SD
+
BIAS 500 SD BUFFER VOUT
-
30k 180 100
+
RF DET 80k SD
+ -
120mV
VOS
-
80k
50A
50A 160k
+
5531 BD
SHDN
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LTC5533
APPLICATIO S I FOR ATIO
Operation The LTC5533 contains two RF detector dice in one package forming two independent RF detector channels. Each channel provides RF power detection over frequencies ranging from 300MHz to 11GHz. Channel functions include an internal frequency compensated buffer amplifier with the gain set to 2x, an RF Schottky diode peak detector and level shift amplifier to convert the RF input signal to low frequency and a delay circuit to avoid voltage transients at VOUT when powering up. The LTC5533 has both shutdown and starting voltage adjustment capabilities. Buffer Amplifiers The output buffer amplifiers are capable of supplying typically 4mA into a load. These amplifiers have bandwidths of 2MHz and a fixed internal gain of two. The VOS inputs control the DC input voltages to the buffer amplifiers. VOS must be connected to ground if the DC output voltage is not to be changed. The buffers are initially trimmed to approximately 130mV with VOS connected to ground. The VOS pins are used to change the initial VOUT starting voltage. This function enables the LTC5533 outputs to
VCC1 2.7V TO 6V
C1 0.1F C4 OPT
C2 100pF
VOUT1
VOS1
C5 OPT C7 0.1F C8 100pF
VCC2 2.7V TO 6V
VOUT2
C9 OPT C10 OPT
VOS2
U
span the input range of a variety of analog-to-digital converters. VOUT will not change until VOS exceeds 130mV. The voltage at VOUT for VOS >130mV and with no RF signal present is: VOUT = VOS VOUT will track VOS above 130mV. RF Detectors The internal RF Schottky diode peak detectors and level shift amplifiers convert the RF input signals to a low frequency signal. The detectors demonstrate excellent efficiency and linearity over a wide range of input power. The Schottky diodes are biased at about 55A and drive 25pF internal peak detector capacitors. Applications The LTC5533 can be used as a self-standing signal strength measuring receiver for a wide range of input signals from -32dBm to 12dBm for frequencies from 300MHz to 11GHz. Operation at higher frequencies is achievable with reduced performance. Consult factory for more information. Figure 1 plots the output voltage as a function of RF input power of an 11GHz CW input signal.
Demo Board Schematic
SHDN1 LTC5533 1 2 3 4 5 6 VCC1 VOUT1 VOS1 VCC2 VOUT2 VOS2 RFIN1 GND SHDN1 RFIN2 GND SHDN2 13 12 11 10 9 8 7 SHDN2 R2 OPT
5533 BD
W
U
U
C3 39pF J1 RFIN1
C6 39pF
R1 OPT
J2 RFIN2
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LTC5533
APPLICATIO S I FOR ATIO
3600 3200 VCC = 3.6V VOS = 0V
VOUT OUTPUT VOLTAGE (mV)
2800 2400 2000 1600 1200 800 400 TA = 85C 0 -32 -28 -24 -20 -16 -12 -8 -4 0 4 8 12 RF INPUT POWER (dBm)
5533 F01
TA = -40C TA = 25C
Figure 1. Typical Detector Characteristics, 11GHz
1000
VCC = 3.6V VOS = 0V
VOUT SLOPE (mV/dB)
100
10
TA = -40C
TA = 85C TA = 25C
1 -32 -28 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
4
8
5533 F02
Figure 2. VOUT Slope vs RF Input Power at 11GHz
1 2
3 2 VOUT VARIATION (dB) 1 0 -1 TA = 85C -2 TA = -40C
VCC = 3.6V VOS = 0V
-3 4 -24 -20 -16 -12 -8 -4 0 RF INPUT POWER (dBm)
8
12
5533 F03
Figure 3. VOUT Variation at -40C and at 85C vs RF Input Power at 11GHz, Normalized to Room Temperature (25C) Results.
10
U
Figure 2 shows the corresponding slope of the 11GHz response, and Figure 3 shows the variation of the output voltage vs RF input power at -40C and 85C, normalized to the room temperature (25C) results. The LTC5533 can be used as a demodulator for AM and ASK modulated signals with data rates up to 2MHz. Depending on specific application needs, the detector outputs can be split between two branches, providing ACcoupled data (or audio) output and a DC-coupled RSSI output for signal strength measurements and AGC. The LTC5533 can also be used for RF power detection and control. Figure 4 is an example of an LTC5533 used for dual band mobile phone transmitter power control. The LTC5533 consists of two separate RF detector dice packaged together. Consequently, detector-to-detector isolation is good--typically 45dB at 2GHz. Output matching is good, but not precise. The characterization plots in the Typical Performance Characteristics show that the typical output voltage mismatch is within 25mV with no RF input signal present. With -14dBm RF input signal, the typical equivalent mismatch is within 1dB.
C3 0.1F
W
UU
+
Li-Ion
20dB RESISTIVE TAP C1 39pF 12 11 10 9 8 7 C2 39pF R2 150 14dB RESISTIVE TAP R1 360
ANTENNA
LTC5533 VCC1 VOUT1 VOS1 VCC2 VOUT2 VOS2 RFIN1 GND SHDN1 RFIN2 GND SHDN2
3 4 5 6
CELL BAND
DIPLEXER
PCS BAND
MOBILE PHONE BB/DSP
VPC BSE Tx PA MODULE
5533 F04
Figure 4. Dual Band Mobile Phone Transmitter Power Contol with LTC5533
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LTC5533
PACKAGE DESCRIPTIO U
DE Package 12-Lead Plastic DFN (4mm x 3mm)
(Reference LTC DWG # 05-08-1695)
0.65 0.05 PACKAGE OUTLINE 3.30 0.05 (2 SIDES) 0.50 BSC 4.00 0.10 (2 SIDES) R = 0.20 TYP 3.00 0.10 (2 SIDES) 1.70 0.10 (2 SIDES) PIN 1 NOTCH
(UE12/DE12) DFN 0603
3.50 0.05 1.70 0.05 2.20 0.05 (2 SIDES)
0.25 0.05
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS R = 0.115 TYP 0.38 0.10 12
7
PIN 1 TOP MARK (NOTE 6)
0.200 REF
0.75 0.05
6 0.25 0.05 3.30 0.10 (2 SIDES)
1 0.50 BSC
0.00 - 0.05
BOTTOM VIEW--EXPOSED PAD NOTE: 1. DRAWING PROPOSED TO BE A VARIATION OF VERSION (WGED) IN JEDEC PACKAGE OUTLINE M0-229 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE
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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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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LTC5533
RELATED PARTS
PART NUMBER Infrastructure LT(R)5511 LT5512 LT5514 LT5515 LT5516 LT5517 LT5519 LT5520 LT5521 LT5522 LT5524 LT5525 LT5526 LT5528 High Linearity Upconverting Mixer DC-3GHz High Signal Level Downconverting Mixer Ultralow Distortion, IF Amplifier/ADC Driver with Digitally Controlled Gain 1.5GHz to 2.5GHz Direct Conversion Quadrature Demodulator 0.8GHz to 1.5GHz Direct Conversion Quadrature Demodulator 40MHz to 900MHz Direct Conversion Quadrature Demodulator 0.7GHz to 1.4GHz High Linearity Upconverting Mixer 1.3GHz to 2.3GHz High Linearity Upconverting Mixer 3.7GHz Very High Linearity Mixer 600MHz to 2.7GHz High Linearity Downconverting Mixer Low Power, Low Distortion ADC Driver with Digitally Programmable Gain 0.9GHz to 2.5GHz High Linearity, Low Power Downconverting Mixer Broadband High Linearity, Low Power Downconverting Mixer 1.6GHz to 2.45GHz High Linearity Direct Quadrature Modulator RF Output to 3GHz, 17dBm IIP3, Integrated LO Buffer DC to 3GHz, 21dBm IIP3, Integrated LO Buffer 850MHz Bandwidth, 47dBm OIP3 at 100MHz, 10.5dB to 33dB Gain Control Range 20dBm IIP3, Integrated LO Quadrature Generator 21.5dBm IIP3, Integrated LO Quadrature Generator 21dBm IIP3, Integrated LO Quadrature Generator 17.1dBm IIP3, 50 Single Ended RF and LO Ports 15.9dBm IIP3, 50 Single Ended RF and LO Ports 24.2dBm IIP3 at 1.95GHz, 12.5dB NF, -42dBm LO Leakage 4.5V to 5.25V Supply, 25dBm IIP3 at 900MHz, NF = 12.5dB, 50 Single-Ended RF and LO Ports 450MHz Bandwidth, 40dBm OIP3, 4.5dB to 27dB Gain Control Range 17.6dBm IIP3 at 1.9GHz, On-Chip 50 RF and LO Matching, ICC = 28mA 16.5dBm IIP3 at 0.9GHz, 11dB NF at 0.9GHz, ICC = 28mA 21.8dBm OIP3 at 2GHz, -159dBm/Hz, Noise Floor, All Ports 50 Matched, Single-Ended RF and LO Ports 80dB Dynamic Range, Temperature Compensated, 2.7V to 5.25V Supply LTC5505-1: -28dBm to 18dBm Range, LTC5505-2: -32dBm to 12dBm Range, Temperature Compensated, 2.7V to 6V Supply -34dBm to 14dBm Range, Temperature Compensated, 2.7V to 6V Supply -32dBm to 12dBm Range, Temperature Compensated, SC70 Package 36dB Dynamic Range, Temperature Compensated, SC70 Package Precision VOUT Offset Control, Shutdown and Adjustable Gain Precision VOUT Offset Control, Shutdown and Adjustable Offset Precision VOUT Offset Control, Adjustable Gain and Offset 60dB Dynamic Range, Temperature Compensated, SC70 Package Precision VOUT Offset Control, Adjustable Gain and Offset -26dBm to 12dBm Range, 2mA Supply Current at 2V to 6V Supply, Latch Enable Output Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range, 450kHz Loop BW Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range, 250kHz Loop BW Multiband GSM/GPRS/EDGE Mobile Phones LTC4402-1: Single Channel Output Control LTC4402-2: Dual Channel Output Control Multiband GSM/GPRS/EDGE Mobile Phones, 250kHz Loop BW
5533f LT/TP 0105 1K * PRINTED IN USA
DESCRIPTION
COMMENTS
RF Power Detectors LT5504 LTC5505 800MHz to 2.7GHz RF Measuring Receiver 300MHz to 3GHz RF Power Detectors
LTC5507 LTC5508 LTC5509 LTC5530 LTC5531 LTC5532 LT5534 LTC5535 LTC5536
100kHz to 1000MHz RF Power Detector 300MHz to 7GHz RF Power Detector 300MHz to 3GHz RF Power Detector 300MHz to 7GHz Precision RF Power Detector 300MHz to 7GHz Precision RF Power Detector 300MHz to 7GHz Precision RF Power Detector 50MHz to 3GHz RF Power Detector 300MHz to 7GHz Precision RF Detector with 12MHz Amplifier 600MHz to 7GHz Precision RF Detector With Fast Comparator Output SOT-23 RF PA Controller SOT-23 RF PA Controller Multiband RF Power Controller
RF Power Controllers LTC4400 LTC4401 LTC4402
LTC4403
RF Power Controller for EDGE/TDMA
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 FAX: (408) 434-0507
www.linear.com
(c) LINEAR TECHNOLOGY CORPORATION 2005

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