LTC5532EDC#TRPBF [Linear]
LTC5532 - Precision 300MHz to 7GHz RF Detector with Gain and Offset Adjustment; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C;
| 型号： | LTC5532EDC#TRPBF |
| 厂家： | 
Linear |
| 描述： | LTC5532 - Precision 300MHz to 7GHz RF Detector with Gain and Offset Adjustment; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C 光电二极管 |
| 文件： | 总16页 (文件大小：280K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LTC5532
Precision 300MHz to 7GHz
RF Detector with Gain
and Offset Adjustment
U
FEATURES
DESCRIPTIO
The LTC®5532 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 ThinSOTTM or (2mm ×
2mm) DFN package. The supply voltage range is opti-
mized for operation from a single lithium-ion cell or 3×
NiMH.
■
Temperature Compensated Internal Schottky
Diode RF Detector
■
Wide Input Frequency Range: 300MHz to 7GHz*
■
Wide Input Power Range: –32dBm to 10dBm
■
Buffered Detector Output with External Gain Control
■
Precision VOUT Offset Control
■
Low Starting Voltage: 120mV ±35mV for Gain = 2x
■
Wide VCC Range of 2.7V to 6V
Low Operating Current: 500µA
The RF input voltage is peak detected using an on-chip
Schottky diode. The detected voltage is buffered and
supplied to the VOUT pin.
■
■
Available in a Low Profile (1mm) SOT-23 Package
and Tiny 6-Lead U(2mm × 2mm) DFN Package
The LTC5532 output buffer gain is set via external resis-
tors. The initial starting voltage of 120mV ±35mV can be
precisely adjusted using the VOS pin.
APPLICATIO S
■
802.11a, 802.11b, 802.11g, 802.15
■
The LTC5532 operates with RF input power levels from
–32dBm to 10dBm.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
*Higher frequency operation is achievable with reduced performance. Consult factory for more
information.
Multimode Mobile Phone Products
■
Optical Data Links
Wireless Data Modems
Wireless and Cable Infrastructure
RF Power Alarm
Envelope Detector
■
■
■
■
U
TYPICAL APPLICATIO
Output Voltage vs RF Input Power
(SOT-23 Package)
3600
300MHz to 7GHz RF Power Detector
(SOT-23 Package)
V
T
= 3.6V
CC
A
= 25°C
3200
2800
2400
2000
1600
1200
800
1000MHz
GAIN = 2
= 0V
V
OS
33pF
1
300MHz
4000MHz
6
RF
INPUT
V
CC
RF
IN
V
CC
100pF
0.1µF
LTC5532ES6
2
3
5
4
GND
V
OUT
R
R
A
V
OS
2000MHz
3000MHz
V
OS
V
M
REFERENCE
5000MHz
6000MHz
7000MHz
–12 –7
–2
RF INPUT POWER (dBm)
400
B
0
5532 TA01
–17
–32 –27 –22
3
8
5532 TA02
5532f
1
LTC5532
W W U W
ABSOLUTE AXI U RATI GS (Note 1)
Maximum Junction Temperature ......................... 125°C
Storage Temperature Range ................ – 65°C to 125°C
Lead Temperature (Soldering, 10 sec)
VCC, VOUT, VM, VOS .................................. –0.3V to 6.5V
RFIN Voltage ......................................(VCC ± 1.5V) to 7V
RFIN Power (RMS)............................................. 12dBm
SOT-23 Only ......................................................... 300°C
I
VOUT ...................................................................... 5mA
Operating Temperature Range (Note 2) .. – 40°C to 85°C
U
W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
NUMBER
ORDER PART
NUMBER
TOP VIEW
V
1
2
3
6
5
4
RF
IN
CC
RF
1
6 V
5 V
4 V
IN
CC
OUT
M
7
V
OUT
GND
LTC5532EDC
LTC5532ES6
GND 2
V
M
V
OS
V
OS
3
S6 PART MARKING
LTAFS
DC6 PART MARKING
LAFR
S6 PACKAGE
6-LEAD PLASTIC TSOT-23
DC6 PACKAGE
6-LEAD (2mm × 2mm) PLASTIC DFN
TJMAX = 125°C, θJA = 85°C/W
EXPOSED PAD (PIN 7) IS GND,
MUST BE SOLDERED TO PCB
TJMAX = 125°C, θJA = 250°C/W
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.6V, RF Input Signal is Off, RA = RB = 1k, VOS = 0V unless
otherwise noted (Note 2).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Operating Voltage
Operating Current
●
●
●
●
2.7
6
CC
I
I
= 0mA
0.5
0.7
155
mA
mV
mA
MHz
pF
VCC
VOUT
V
V
V
V
V
V
V
(No RF Input)
R
LOAD
= 2k, V = 0V
85
2
100 to 140
OUT OL
OS
Output Current
Bandwidth
V
C
= 1.75V, V = 2.7V, ∆V < 10mV
OUT
4
2
OUT
OUT
OUT
OUT
OUT
OUT
CC
= 33pF, R
= 2k (Note 4)
LOAD
LOAD
Load Capacitance
Slew Rate
(Note 6)
●
33
V
V
= 1V Step, C
= 33pF, Total R = 2k (Note 3)
LOAD
3
1
V/µs
RFIN
LOAD
Noise
= 3V, Noise BW = 1.5MHz, 50Ω RF Input Termination,
50Ω AC Output Termination
mV
P-P
CC
V
V
V
V
Voltage Range
Input Current
●
●
●
●
0
1
V
µA
V
OS
V
V
= 1V
–0.5
0
0.5
OS
OS
Voltage Range
Input Current
V
CC
-1. 8
M
M
= 3.6V
–0.5
0.5
µA
M
RF Input Frequency Range
(Note 7)
300 to 7000
–32 to 10
220
MHz
dBm
Ω
IN
RF Input Power Range
IN
RF Frequency = 300MHz to 7GHz (Note 5, 6) V = 2.7V to 6V
CC
RF AC Input Resistance
IN
F = 1000MHz, Pin = –25dBm
F = 1000MHz, Pin = –25dBm
RF Input Shunt Capacitance
IN
0.65
pF
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 4: Bandwidth is calculated based on the 10% to 90% rise time
equation: BW = 0.35/rise time.
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 5: RF performance is tested at 1800MHz
Note 6: Guaranteed by design.
Note 7: Higher frequency operation is achievable with reduced
Note 3: The rise time at V
is measured between 1.3V and 2.3V.
OUT
performance. Consult factory for more information.
5532f
2
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS (RLOAD = 20k) Characteristics are for both packages
unless otherwise indicated.
Output Voltage vs Supply Voltage
(RF Input Signal Off)
Supply Current vs Supply Voltage
(RF Input Signal Off)
Output Delay vs RF Input Power
130
125
120
115
110
500
480
460
440
420
1000
800
600
400
200
0
V
A
V
= 3.6V
CC
V
= 0V
OS
T
= 25°C
GAIN = 2
= 0V
OS
T
= 85°C
GAIN = 2
A
T
= –40°C
A
T
T
= 25°C
A
A
T
T
= 25°C
= 85°C
A
= –40°C
90% SWITCHING
A
50% SWITCHING
0
5
3.0
3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.5
6.0
2.5
5.0
3.0
3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.5
6.0
2.5
5.0
–10
–5
10
RF INPUT POWER (dBm)
5532 G01
5532 G02
5532 G03
Typical Detector Characteristics,
2000MHz, Gain = 2, VOS = 0V
Typical Detector Characteristics,
1000MHz, Gain = 2, VOS = 0V
Typical Detector Characteristics,
300MHz, Gain = 2, VOS = 0V
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
CC
T
= –40°C
A
T
= –40°C
T = –40°C
A
A
T = 25°C
A
T
= 25°C
A
T = 25°C
A
T
= 85°C
T
= 85°C
T = 85°C
A
A
A
400
400
400
0
0
0
–16
–16
–16
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G04
5532 G05
5532 G06
Typical Detector Characteristics,
5000MHz, Gain = 2, VOS = 0V
(SOT-23 Package)
Typical Detector Characteristics,
3000MHz, Gain = 2, VOS = 0V
Typical Detector Characteristics,
4000MHz, Gain = 2, VOS = 0V
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
CC
T
= –40°C
T
= –40°C
A
T
= –40°C
A
A
T
= 25°C
T
= 25°C
A
A
T
= 25°C
A
T
= 85°C
T
= 85°C
A
T
= 85°C
A
A
400
400
400
0
0
0
–16
–16
–16
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G07
5532 G08
5532 G09
5532f
3
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS (RLOAD = 20k) Characteristics are for both packages
unless otherwise indicated.
Typical Detector Characteristics,
6000MHz, Gain = 2, VOS = 0V
(SOT-23 Package)
Typical Detector Characteristics,
7000MHz, Gain = 2, VOS = 0V
(SOT-23 Package)
Typical Detector Characteristics,
300MHz, Gain = 4, VOS = 0V
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
CC
T
= –40°C
A
T
= –40°C
A
T
= –40°C
A
T
= 25°C
A
T
= 25°C
A
T
= 25°C
A
T
= 85°C
A
T
= 85°C
A
400
400
400
T
= 85°C
A
0
0
0
–16
–17
–16
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –27 –22
–12 –7
–2
3
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G07
5532 G11
5532 G12
Typical Detector Characteristics,
1000MHz, Gain = 4, VOS = 0V
VOUT vs RF Input Power and VOS
300MHz, Gain = 2
,
3600
3200
2800
2400
2000
1600
1200
800
3600
V
= 3.6V
V
T
= 3.6V
CC
A
CC
= 25°C
3200
2800
2400
2000
1600
1200
800
T
= –40°C
A
T
= 25°C
A
V
= 1V
OS
V
V
= 0.5V
= 0.2V
OS
OS
T
= 85°C
A
400
400
V
= 0V
OS
0
0
–16
–16
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
–12 –8 –4
0
4
8
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G13
5532 G14
V
OUT vs RF Input Power, 300MHz
and 1000MHz, Gain = 2 and 4,
VOS = 0V
VOUT vs RF Input Power and VOS
1000MHz, Gain = 2
,
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
V
T
= 3.6V
V
T
= 3.6V
CC
A
300MHz
GAIN = 4
CC
A
= 25°C
= 25°C
1000MHz
GAIN = 4
V
= 1V
OS
300MHz
GAIN = 2
V
= 0.5V
= 0.2V
OS
400
400
V
1000MHz
GAIN = 2
OS
V
= 0V
OS
0
0
–16
–16
–12 –8 –4
–32 –28 –24 –20
–12 –8 –4
0
4
8
–32 –28 –24 –20
0
4
8
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G15
5532 G16
5532f
4
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS (RLOAD = 20k) Characteristics are for both packages
unless otherwise indicated.
VOUT Slope vs RF Input Power
at 300MHz
VOUT Slope vs RF Input Power
at 1000MHz
VOUT Slope vs RF Input Power
at 2000MHz
1000
100
10
1000
100
10
1000
100
10
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
CC
GAIN = 2
GAIN = 2
GAIN = 2
V
= 0V
V
= 0V
V
= 0V
OS
OS
OS
T
= –40°C
T
= –40°C
T
= –40°C
A
A
A
T
= 85°C
T
A
= 85°C
T
= 85°C
A
A
A
T
= 25°C
T = 25°C
A
T
= 25°C
A
1
1
1
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
5532 G17
5532 G18
5532 G19
V
OUT Slope vs RF Input Power
VOUT Slope vs RF Input Power
at 4000MHz
VOUT Slope vs RF Input Power
at 5000MHz (SOT-23 Package)
at 3000MHz
1000
100
10
1000
100
10
1000
100
10
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
GAIN = 2
= 0V
CC
GAIN = 2
V = 0V
OS
GAIN = 2
V
= 0V
V
OS
OS
T
= –40°C
T
= –40°C
T = –40°C
A
A
A
T
= 85°C
T
= 85°C
T
A
= 85°C
A
A
A
T
= 25°C
T
= 25°C
A
T
= 25°C
A
1
1
1
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
5532 G20
5532 G21
5532 G22
VOUT Slope vs RF Input Power
at 6000MHz (SOT-23 Package)
VOUT Slope vs RF Input Power
at 7000MHz (SOT-23 Package)
1000
1000
100
10
V
= 3.6V
V
= 3.6V
CC
GAIN = 2
= 0V
CC
GAIN = 2
V
V
= 0V
OS
OS
100
10
1
T
A
= –40°C
T
= –40°C
A
T
= 85°C
T
A
= 85°C
A
A
T
= 25°C
T
= 25°C
A
1
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
5532 G22
5532 G23
5532f
5
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS
(DFN package, RLOAD = 20k)
Typical Detector Characteristics
5000MHz, Gain = 2, VOS = 0V
(DFN Package)
Typical Detector Characteristics
Typical Detector Characteristics
7000MHz, Gain = 2, VOS = 0V
(DFN Package)
6000MHz, Gain = 2, VOS = 0V
(DFN Package)
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
3600
3200
2800
2400
2000
1600
1200
800
V
= 3.6V
V
= 3.6V
V
= 3.6V
CC
CC
CC
T
= –40°C
T = –40°C
A
A
T
= 25°C
T = –40°C
A
A
T
= 25°C
T
= 25°C
A
A
T
= 85°C
T
= 85°C
T
= 85°C
A
A
A
400
400
400
0
0
0
–32 –28 –24 –20 –16 –12
8
–32 –28 –24 –20 –16 –12
8
–32 –28 –24 –20 –16 –12
8
–8 –4
0
4
–8 –4
0
4
–8 –4
0
4
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
RF INPUT POWER (dBm)
5532 G25
5532 G26
5532 G27
Output Voltage vs RF Input Power
(DFN Package)
V
OUT Slope vs RF Input Power
at 5000MHz (DFN Package)
3600
3200
2800
2400
2000
1600
1200
800
1000
100
10
300MHz
1GHz
2GHz
4GHz
5GHz
6GHz
7GHz
V
= 3.6V
CC
GAIN = 2
V
= 0V
OS
V
A
= 3.6V
= 25°C
GAIN = 2
= 0V
CC
T
T
= –40°C
T = 85°C
A
A
V
OS
T
= 25°C
A
400
0
1
–12 –7
–32 –27 –22 –17
–2
3
8
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
RF INPUT POWER (dBm)
5532 G29
5532 G28
VOUT Slope vs RF Input Power
at 6000MHz (DFN Package)
VOUT Slope vs RF Input Power
at 7000MHz (DFN Package)
1000
100
10
1000
100
10
V
= 3.6V
V
= 3.6V
CC
CC
GAIN = 2
= 0V
GAIN = 2
V = 0V
OS
V
OS
T
= –40°C
T
= 85°C
= 25°C
T
A
= –40°C
T = 85°C
A
A
A
T
= 25°C
A
T
A
1
1
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
–30 –25 –20 –15 –10 –5
RF INPUT POWER (dBm)
0
5
5532 G30
5532 G31
5532f
6
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS
(SOT-23 Package)
RFIN Input Impedance (Pin = 0dBm, VCC = 3.6V, TA = 25°C)
S11 Forward Reflection
Impedance
FREQUENCY
(GHz)
RESISTANCE
REACTANCE
(Ω)
(Ω)
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
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
–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
5508 TA03
0.3000GHz-7.000GHz
–2.84
–1.49
–0.07
2.99
6.61
10.39
14.35
17.91
20.77
22.47
5532f
7
LTC5532
U W
(SOT-23 Package)
TYPICAL PERFOR A CE CHARACTERISTICS
RFIN Input Impedance (Pin = –25dBm, VCC = 3.6V, TA = 25°C)
S11 Forward Reflection
Impedance
FREQUENCY
(GHz)
RESISTANCE
REACTANCE
(Ω)
(Ω)
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
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
–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
0.3000GHz-7.000GHz
5508 TA04
–5.24
–1.58
1.53
2.62
4.00
6.94
10.62
14.02
17.77
21.24
24.21
25.56
5532f
8
LTC5532
U W
TYPICAL PERFOR A CE CHARACTERISTICS
(DFN Package)
RFIN Input Impedance (Pin = 0dBm, VCC = 3.6V, TA = 25°C)
S11 Forward Reflection
Impedance
FREQUENCY
(GHz)
RESISTANCE
REACTANCE
(Ω)
(Ω)
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
305.23
238.58
185.32
142.06
111.93
90.59
75.22
63.37
53.84
47.11
41.34
37.00
33.60
30.96
28.55
26.36
24.52
23.12
22.01
21.13
20.44
19.85
19.42
19.03
18.78
18.69
18.80
19.09
19.68
20.05
20.18
20.35
19.84
19.81
19.95
–144.87
–173.62
–177.82
–167.59
–152.80
–139.47
–126.45
–114.14
–103.83
–94.33
–85.18
–76.93
–69.47
–62.66
–56.74
–51.02
–45.95
–40.97
–36.25
–31.82
–27.51
–23.69
–20.18
–16.54
–12.88
–9.21
0.3000GHz-7.000GHz
5508 TA05
–5.72
–2.32
0.85
3.49
6.37
9.23
12.37
15.97
17.83
5532f
9
LTC5532
U W
(DFN Package)
TYPICAL PERFOR A CE CHARACTERISTICS
RFIN Input Impedance (Pin = –25dBm, VCC = 3.6V, TA = 25°C)
S11 Forward Reflection
Impedance
FREQUENCY
(GHz)
RESISTANCE
REACTANCE
(Ω)
(Ω)
0.30
0.50
0.70
0.90
1.10
1.31
1.50
1.70
1.90
2.10
2.31
2.51
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
225.19
196.59
166.23
137.24
114.69
96.83
83.12
72.11
61.69
53.76
47.46
42.60
39.04
36.25
33.41
30.78
28.85
27.28
26.08
24.97
24.18
23.43
22.88
22.41
22.09
21.82
21.91
22.08
22.84
23.75
23.32
22.57
22.17
22.20
22.27
–79.32
–105.44
–114.07
–115.88
–111.94
–106.10
–99.28
–92.73
–85.98
–78.71
–71.16
–64.52
–58.61
–53.23
–48.13
–43.37
–38.83
–34.09
–29.73
–25.80
–21.94
–18.27
–15.04
–11.56
–8.08
0.3000GHz-7.000GHz
5508 TA06
–4.34
–1.29
2.15
5.32
7.51
9.47
12.41
15.79
19.34
21.21
5532f
10
LTC5532
U
U
U
(SOT-23/DFN)
PI FU CTIO S
VM (Pin 4/Pin 3): Inverting Input to Buffer Amplifier.
VOUT (Pin 5/Pin 2): Detector Output.
RFIN (Pin 1/Pin 6): RF Input Voltage. Referenced to VCC.
A coupling capacitor must be used to connect to the RF
signal source. The frequency range is 300MHz to 7GHz.
This pin has an internal 500Ω termination, an internal
Schottky diode detector and a peak detector capacitor.
Operation at higher frequencies is achievable, consult
factory for more information.
VCC (Pin 6/Pin 1): Power Supply Voltage, 2.7V to 6V. VCC
should be bypassed appropriately with ceramic capaci-
tors.
Exposed Pad (NA/Pin 7): Exposed Pad is GND. Must be
soldered to PCB.
GND (Pin 2/Pin 5): Ground.
V
OS (Pin 3/Pin 4): VOUT Offset Voltage Adjustment. From
0V to 120mV, VOUT does not change. Above 120mV, VOUT
will track VOS.
W
BLOCK DIAGRA
RF
SOURCE
V
CC
+
V
OUT
BUFFER
–
500Ω
RF
IN
V
M
500Ω
BIAS
31k
25pF
+
–
V
OS
+
–
RF DET
80k
24k
80k
50µA
50µA
GND
120mV
+
5532 BD
5532f
11
LTC5532
U
W
U U
APPLICATIO S I FOR ATIO
Operation
voltage (which is connected to the positive input of the
bufferamplifier)exceedstheexternalvoltageonVM,VOUT
will switch high.
The LTC5532 RF detector integrates several functions to
provideRFpowerdetectionoverfrequenciesrangingfrom
300MHz to 7GHz. These functions include an internal fre-
quency compensated buffer amplifier, an RF Schottky di-
ode peak detector and a level shift amplifier to convert the
RF input signal to DC. The LTC5532 has both gain setting
and voltage offset adjustment capabilities.
The VOS input controls the DC input voltage to the buffer
amplifier. VOS must be connected to ground if the DC
starting voltage is not to be changed. The buffer is initially
trimmed nominally to 120mV (Gain = 2x) with VOS con-
nected to ground.
The VOS pin is used to change the initial VOUT starting
voltage. This function, in combination with gain adjust-
ment enables the LTC5532 output to span the input range
of a variety of analog-to-digital converters. VOUT will not
change until VOS exceeds 120mV. The starting voltage at
VOUT for VOS >120mV is:
Buffer Amplifier
The output buffer amplifier is capable of supplying typi-
cally 4mA into a load. The negative terminal VM is brought
outtoapinforgainselection.Externalresistorsconnected
between VOUT and VM (RA) and VM to ground (RB) will set
the gain of this amplifier.
VOUT = 0.5 • VOS • Gain
Gain = 1 + RA/RB
wheregainistheoutputbuffergain. Forabuffergainof2x,
VOUT will exactly track VOS above 120mV.
The amplifier is unity gain stable; however a minimum
gain of two is recommended to improve low output
voltage accuracy. The amplifier has a bandwidth of 2MHz
with a gain of 2. For increased gain applications, the
bandwidth is reduced according to the formula:
RF Detector
The internal RF Schottky diode peak detector and level
shift amplifier convert the RF input signal to a low fre-
quency signal. The detector demonstrates excellent effi-
ciency and linearity over a wide range of input power. The
Schottky diode is biased at about 55µA and drives a 25pF
internal peak detector capacitor.
Bandwidth = 4MHz/(Gain) = 4MHz • RB/(RA + RB)
A capacitor can be placed across the feedback resistor RA
to shape the frequency response. In addition, the ampli-
fier can be used as a comparator. VM can be connected to
a reference voltage. When the internal detector output
Demo Board Schematic
V
CC
2.7V TO 6V
C1
C4
39pF
LTC5532ES6
0.1µF
RF
IN
C2
1
2
3
6
5
4
100pF
RF
V
IN
CC
R1
(OPT)
GND V
V
OUT
OUT
C3
(OPT)
R2
10k
1%
V
V
M
OS
OFFSET
ADJUSTMENT
R3
10k
1%
GND
5532 DB
5532f
12
LTC5532
W U U
APPLICATIO S I FOR ATIO
U
Applications
The LTC5532 can be used as a demodulator for AM and
ASK modulated signals with data rates up to 2MHz.
Depending on specific application needs, the RSSI output
can be split between two branches, providing AC-coupled
data (or audio) output and DC-coupled RSSI output for
signal strength measurements and AGC.
TheLTC5532canbeusedasaself-standingsignalstrength
measuring receiver for a wide range of input signals from
–32dBmto10dBmforfrequenciesfrom300MHzto7GHz.
Operation at higher frequencies, to 12GHz or above, is
achievable with reduced performance. The smaller DFN
package version is recommended for these applications
because of its lower parasitics. Figure 1 plots the output
voltage as a function of RF power of a 12GHz CW input
signal.
The LTC5532 can be used for RF power detection and
control. Figure 2 is an example of a transmitter power
controller, using the LTC5532 with a capacitive tap to the
power amplifier. A 0.5pF capacitor (C1) followed by a
200Ω resistor (R1) form a coupling circuit with about
20dB loss at 900MHz referenced to the LTC5532 RF input
pin. In the actual product implementation, component
valuesforthecapacitivetapmaybedifferentdependingon
parts placement, PCB parasitics and parameters of the
antenna.
3600
T
A
= 25°C
3200
2800
2400
2000
1600
1200
800
The LTC5532 can be configured as a comparator for RF
power detection and RF power alarms. The characteriza-
tion data includes a plot of the LTC5532 output delay in
response to a positive input step of varying RF level.
400
0
–32 –28 –24 –20 –16 –12
8
–8 –4
0
4
RF INPUT POWER (dBm)
5532 F01
Figure 1. Typical Detector Characteristics,
12GHz, Gain = 2, VOS = 0V (DFN Package)
R1
TX PA
C1
200Ω
MODULE
0.5pF
LTC5532ES6
1
1%
±0.05pF
CELL BAND
6
5
4
Li-Ion
0.1µF
RF
V
DIPLEXER
IN
CC
2
3
GND V
OUT
R2
OFFSET
ADJUSTMENT
PCS BAND
V
V
M
OS
R3
MOBILE
PHONE
DSP
VPC
5532 F02
BSE
Figure 2. Mobile Phone Tx Power Control Application Diagram with a Capacitive Tap
5532f
13
LTC5532
U
PACKAGE DESCRIPTIO
DC Package
6-Lead Plastic DFN (2mm × 2mm)
(Reference LTC DWG # 05-08-1703)
0.675 ±0.05
2.50 ±0.05
0.61 ±0.05
1.15 ±0.05
(2 SIDES)
PACKAGE
OUTLINE
0.25 ± 0.05
0.50 BSC
1.42 ±0.05
(2 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
R = 0.115
TYP
0.56 ± 0.05
(2 SIDES)
0.38 ± 0.05
4
6
2.00 ±0.10
(4 SIDES)
PIN 1 BAR
PIN 1
TOP MARK
CHAMFER OF
(SEE NOTE 6)
EXPOSED PAD
(DC6) DFN 1103
3
1
0.25 ± 0.05
0.50 BSC
0.75 ±0.05
0.200 REF
1.37 ±0.05
(2 SIDES)
BOTTOM VIEW—EXPOSED PAD
0.00 – 0.05
NOTE:
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2)
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
5532f
14
LTC5532
U
PACKAGE DESCRIPTIO
S6 Package
6-Lead Plastic TSOT-23
(Reference LTC DWG # 05-08-1636)
2.90 BSC
(NOTE 4)
0.62
MAX
0.95
REF
1.22 REF
1.4 MIN
1.50 – 1.75
2.80 BSC
3.85 MAX 2.62 REF
(NOTE 4)
PIN ONE ID
RECOMMENDED SOLDER PAD LAYOUT
PER IPC CALCULATOR
0.30 – 0.45
6 PLCS (NOTE 3)
0.95 BSC
0.80 – 0.90
0.20 BSC
DATUM ‘A’
0.01 – 0.10
1.00 MAX
0.30 – 0.50 REF
1.90 BSC
0.09 – 0.20
(NOTE 3)
S6 TSOT-23 0302
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DRAWING NOT TO SCALE
3. DIMENSIONS ARE INCLUSIVE OF PLATING
4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
5. MOLD FLASH SHALL NOT EXCEED 0.254mm
6. JEDEC PACKAGE REFERENCE IS MO-193
5532f
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-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
15
LTC5532
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
Infrastructure
LT5511
LT5512
LT5515
LT5516
LT5517
LT5519
LT5520
LT5522
High Linearity Upconverting Mixer
RF Output to 3GHz, 17dBm IIP3, Integrated LO Buffer
DC to 3GHz, 21dBm IIP3, Integrated LO Buffer
20dBm IIP3, Integrated LO Quadrature Generator
21.5dBm IIP3, Integrated LO Quadrature Generator
21dBm IIP3, Integrated LO Quadrature Generator
17.1dBm IIP3, 50Ω Single Ended RF and LO Ports
15.9dBm IIP3, 50Ω Single Ended RF and LO Ports
DC-3GHz High Signal Level Downconverting Mixer
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
600MHz to 2.7GHz High Linearity Downconverting Mixer
4.5V to 5.25V Supply, 25dBm IIP3 at 900MHz, NF = 12.5dB,
50Ω Single-Ended RF and LO Ports
RF Power Detectors
LT5504
800MHz to 2.7GHz RF Measuring Receiver
80dB Dynamic Range, Temperature Compensated,
2.7V to 5.25V Supply
LTC®5505
300MHz to 3GHz RF Power Detectors
LTC5505-1: –28dBm to 18dBm Range,
LTC5505-2: –32dBm to 12dBm Range,
Temperature Compensated, 2.7V to 6V Supply
LTC5507
LTC5508
100kHz to 1000MHz RF Power Detector
300MHz to 7GHz RF Power Detector
–34dBm to 14dBm Range, Temperature Compensated,
2.7V to 6V Supply
–32dBm to 12dBm Range, Temperature Compensated,
SC70 Package
LTC5509
300MHz to 3GHz RF Power Detector
36dB Dynamic Range, Temperature Compensated, SC70 Package
300MHz to 7GHz, –32dBm to 10dBm Range
LTC5530
Precision RF Detector with Shutdown and Gain Adjustment
Precision RF Detector with Shutdown and Offset Adjustment
LTC5531
300MHz to 7GHz, –32dBm to 10dBm Range
RF Building Blocks
LT5500
1.8GHz to 2.7GHz Receiver Front End
1.8V to 5.25V Supply, Dual-Gain LNA, Mixer, LO Buffer
LT5502
400MHz Quadrature IF Demodulator with RSSI
1.8V to 5.25V Supply, 70MHz to 400MHz IF, 84dB Limiting Gain,
90dB RSSI Range
LT5503
LT5506
LT5546
1.2GHz to 2.7GHz Direct IQ Modulator and
Upconverting Mixer
1.8V to 5.25V Supply, Four-Step RF Power Control,
120MHz Modulation Bandwidth
500MHz Quadrature IF Demodulator with VGA
1.8V to 5.25V Supply, 40MHz to 500MHz IF, –4dB to 57dB
Linear Power Gain, 8.8MHz Baseband Bandwidth
500MHz Ouadrature IF Demodulator with
VGA and 17MHz Baseband Bandwidth
17MHz Baseband Bandwidth, 40MHz to 500MHz IF, 1.8V to 5.25V
Supply, –7dB to 56dB Linear Power Gain
RF Power Controllers
LTC1757A
LTC1758
LTC1957
LTC4400
RF Power Controller
Multiband GSM/DCS/GPRS Mobile Phones
Multiband GSM/DCS/GPRS Mobile Phones
Multiband GSM/DCS/GPRS Mobile Phones
RF Power Controller
RF Power Controller
SOT-23 RF PA Controller
Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range,
450kHz Loop BW
LTC4401
SOT-23 RF PA Controller
Multiband GSM/DCS/GPRS Phones, 45dB Dynamic Range,
250kHz Loop BW
LTC4402
LTC4403
RF Power Controller for EDGE/TDMA
RF Power Controller for EDGE/TDMA
Multiband GSM/GPRS/EDGE Mobile Phones, 450kHz Loop BW
Multiband GSM/GPRS/EDGE Mobile Phones, 250kHz Loop BW
5532f
LT/TP 0304 1K • PRINTED IN USA
16 LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
●
LINEAR TECHNOLOGY CORPORATION 2003
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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