LTC5588IPF-1#PBF Linear Technology, LTC5588IPF-1#PBF Datasheet

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LTC5588IPF-1#PBF

Manufacturer Part Number
LTC5588IPF-1#PBF
Description
IC, MODULATOR, 200MHz To 6GHz, TQFN-24
Manufacturer
Linear Technology
Datasheet

Specifications of LTC5588IPF-1#PBF

Frequency Range
200MHz To 6GHz
Rf Type
GSM, LTE, WCDMA, WiMax
Supply Voltage Range
3.15V To 3.45V
Rf Ic Case Style
TQFN
No. Of Pins
24
Operating Temperature Range
-40°C To +85°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTC5588IPF-1#PBFLTC5588IPF-1
Manufacturer:
LT
Quantity:
10 000
Company:
Part Number:
LTC5588IPF-1#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
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APPLICATIONS
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TYPICAL APPLICATION
GENERATOR
Frequency Range: 200MHz to 6000MHz
Output IP3: +31dBm Typical at 2140MHz (Uncalibrated)
Single Pin Calibration to Optimize OIP3
Low Output Noise Floor at 6MHz Offset:
Integrated LO Buffer and LO Quadrature Phase
Generator
High Impedance DC Interface to Baseband Inputs
with 0.5V Common Mode Voltage*
50Ω Single-Ended LO and RF Ports
3.3V Operation
Fast Turn-Off/On: 10ns/17ns
Temperature Sensor (Thermistor)
24-Lead UTQFN 4mm × 4mm Package
LTE, GSM/EDGE, W-CDMA, TD-SCDMA, CDMA2K,
WiMax Basestations
Image Reject Upconverters
Point-to-Point Microwave Links
Broadcast Modulator
Military Radio
BASEBAND
Q-DAC
I-DAC
No RF: –160.6dBm/Hz
P
OUT
EN
200MHz to 6000MHz Direct Conversion Transmitter Application
= 5dBm: –155.5dBm/Hz
+35dBm Typical (User Optimized)
V I
V I
Q-CHANNEL
I-CHANNEL
90
0
1nF
50Ω
V
CC
VCO/SYNTHESIZER
1nF
LTC5588-1
LINOPT
6.8pF
LTC2630
DESCRIPTION
The LTC
designed for high performance wireless applications. It
allows direct modulation of an RF signal using differential
baseband I and Q signals. It supports LTE, GSM, EDGE,
TD-SCDMA, CDMA, CDMA2000, W-CDMA, WiMax and
other communication standards. It can also be config-
ured as an image reject upconverting mixer, by applying
90° phase-shifted signals to the I and Q inputs. The I/Q
baseband inputs drive double-balanced mixers. An on-
chip balun converts the differential mixer signals to a 50Ω
single-ended RF output. Four balanced I and Q baseband
input ports are DC-coupled with a common mode volt-
age level of 0.5V. The LO path consists of an LO buffer
with single-ended or differential inputs and precision
quadrature generators to drive the mixers. The supply
voltage range is 3.15V to 3.45V. An external voltage can
be applied to the LINOPT pin to further improve 3rd-order
linearity performance. Accurate temperature dependent
calibrations can be performed using the on-chip thermistor.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
*Contact LTC Marketing for other common mode voltage versions.
0.2pF
1nF + 4.7μF
55881 TA01a
2
PA
Quadrature Modulator
RF = 200MHz
TO 6000MHz
®
5588-1 is a direct conversion I/Q modulator
3.3V
200MHz to 6000MHz
with Ultrahigh OIP3
–40
–50
–70
–80
–90
–60
with Optimized LINOPT Voltage vs RF
–20
ACPR, AltCPR and ACPR, AltCPR
DOWNLINK TEST
MODEL 64 DPCH
f
f
BB
LO
Output Power at 2.14GHz for
W-CDMA 1, 2 and 4 Carriers
RF OUTPUT POWER PER CARRIER (dBm)
= 140MHz,
= 2280MHz
ACPR
ACPR (OPT)
AltCPR
AltCPR (OPT)
–15
–10
LTC5588-1
4C
–5
2C
0
1C
55881fb
55881 TA01b
5
1

Related parts for LTC5588IPF-1#PBF

LTC5588IPF-1#PBF Summary of contents

Page 1

... Accurate temperature dependent calibrations can be performed using the on-chip thermistor. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Contact LTC Marketing for other common mode voltage versions. ...

Page 2

... Storage Temperature Range .................. –65°C to 150°C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC5588IPF-1#PBF LTC5588IPF-1#TRPBF Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: ...

Page 3

ELECTRICAL CHARACTERISTICS BBPI, BBMI, BBPQ, BBMQ common mode DC voltage V and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise noted. Test circuit is shown in Figure 8. SYMBOL PARAMETER f = 450MHz 449.9MHz, P ...

Page 4

LTC5588-1 ELECTRICAL CHARACTERISTICS BBPI, BBMI, BBPQ, BBMQ common mode DC voltage V and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise noted. Test circuit is shown in Figure 8. SYMBOL PARAMETER f = 2140MHz 2139.9MHz, ...

Page 5

ELECTRICAL CHARACTERISTICS BBPI, BBMI, BBPQ, BBMQ common mode DC voltage V and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise noted. Test circuit is shown in Figure 8. SYMBOL PARAMETER OP1dB Output 1dB Compression OIP2 Output 2nd-Order ...

Page 6

LTC5588-1 TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise ...

Page 8

LTC5588-1 TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise ...

Page 10

LTC5588-1 TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless ...

Page 11

TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise ...

Page 12

LTC5588-1 TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless ...

Page 13

TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise ...

Page 14

LTC5588-1 TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless ...

Page 15

TYPICAL PERFORMANCE CHARACTERISTICS AC-terminated with 50Ω to ground, BBPI, BBMI, BBPQ, BBMQ inputs 0.5V and 5.5MHz for OIP3 and OIP2, or else baseband input frequency = 100kHz, I and Q 90° shifted, lower sideband selection, LINOPT pin floating, unless otherwise ...

Page 16

LTC5588-1 PIN FUNCTIONS EN (Pin 1): Enable Input. When the enable pin voltage is higher than 2V, the IC is on. When the input voltage is less than 1V, the IC is off. GND (Pins 11, 12, ...

Page 17

APPLICATIONS INFORMATION The LTC5588-1 consists of I and Q input differential volt- age-to-current converters, I and Q upconverting mixers output balun quadrature phase generator and LO buffers. External I and Q baseband signals are applied to ...

Page 18

LTC5588-1 APPLICATIONS INFORMATION It is recommended to compensate the baseband input impedance in the baseband lowpass filter design in order to achieve best gain flatness vs baseband frequency. The S-parameters for (each of) the baseband inputs is given in Table ...

Page 19

APPLICATIONS INFORMATION At each baseband pin, a 0.146V to 0.854V swing is de- veloped corresponding to a DAC output current of 0mA to 20mA. A 3dB lower gain can be achieved using R1A = R1B = 49.9Ω; R2A = R2B ...

Page 20

LTC5588-1 APPLICATIONS INFORMATION Table 3. LOM Port Input Impedance vs Frequency for EN = Low and P = 0dBm (LOP Terminated with 50Ω Ground) LOM REFLECTION COEFFICIENT FREQUENCY LOM INPUT (GHz) IMPEDANCE MAG 0.2 95-j69 0.511 0.25 84-j61 ...

Page 21

APPLICATIONS INFORMATION Table 5. LOM Port Input Impedance vs Frequency for EN = Low and P = 10dBm (LOP Terminated with 50Ω Ground) LOM REFLECTION COEFFICIENT FREQUENCY LOM INPUT (GHz) IMPEDANCE MAG 0.2 92-j61 0.48 0.25 83-j55 0.444 ...

Page 22

LTC5588-1 APPLICATIONS INFORMATION Table 6: Differential LO Input Impedance vs Frequency for EN = High and P = 10dBm LO LO REFLECTION COEFFICIENT DIFFERENTIAL FREQUENCY INPUT (MHz) IMPEDANCE MAG 0.2 134-j48 0.247 0.25 126-j51 0.247 0.3 119-j46 0.223 0.4 109-j45 ...

Page 23

APPLICATIONS INFORMATION RF Section After upconversion, the RF outputs of the I and Q mixers are combined. An on-chip balun performs internal dif- ferential to single-ended conversion, while transforming the output signal to 50Ω as shown in Figure 1. Table ...

Page 24

LTC5588-1 APPLICATIONS INFORMATION Linearity Optimization The LINOPT pin (Pin 7) can be used to optimize the lin- earity of the RF circuitry. Figure 6 shows the simplified schematic of the LINOPT pin interface. The nominal DC bias voltage of the ...

Page 25

APPLICATIONS INFORMATION Evaluation Board Figure 8 shows the evaluation board schematic. A good ground connection is required for the exposed pad. If this is not done properly, the RF performance will degrade. Additionally, the exposed pad provides heat sinking for ...

Page 26

LTC5588-1 APPLICATIONS INFORMATION Figures 9 and 10 show the component side and the bot- tom side of the evaluation board. An enlarged view of the component side around the IC placement shows all pins related to GND (group 1) and ...

Page 27

APPLICATIONS INFORMATION The LTC5588-1 is recommended for basestation applica- tions using various modulation formats. Figure 14 shows a typical application. The LTC2630 can be used to drive the LINOPT pin via a SPI interface. At 3.3V supply, the maximum LINOPT ...

Page 28

... ON THE TOP AND BOTTOM OF PACKAGE 28 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. PF Package Variation: PF24MA 24-Lead Plastic UTQFN (4mm × ...

Page 29

REVISION HISTORY REV DATE DESCRIPTION A 2/11 Updated Features and Description sections Add θ value to Pin Configuration JC Additional information added to Electrical Characteristics section Added Typical Performance Characteristics curves Revised Applications Information to replace Figure 1 and text. ...

Page 30

... Dynamic Range, ±1dB Accuracy Over Temperature, Single-Ended RF Input (No Transformer) www.linear.com ● 3.3V 1nF + 4.7μ 200MHz TO 6000MHz 6.8pF PA 12,14,17, 0.2pF 19 DAC 2 SCK LTC2630 3 SDI 5 55881 F14 OUT LT 0311 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2010 5dBm 55881fb ...

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