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LT5568-2EUF
GSM/EDGE OPTIMIZED, HIGH LINEARITY DIRECT QUADRATURE MODULATOR
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Manufacturer:
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Mfr.Part #:
LT5568-2EUF
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Datasheet:
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Package/Case:
QFN
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Product Type:
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Lifecycle:
Unconfirmed
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EDA/CAD Models:
Availability: 5271 PCS
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LT5568-2EUF General Description
The LT5568 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure. It allows direct modulation of an RF signal using differential baseband I and Q signals. It supports PHS, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, WCDMA, and other systems. It may also be configured as an image reject upconverting mixer, by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. The outputs of these mixers are summed and applied to an on-chip RF transformer, which converts the differential mixer signals to a 50Ω single-ended output. The four balanced I and Q baseband input ports are intended for DC coupling from a source with a common mode voltage level of about 0.5V. The LO path consists of an LO buffer with single-ended input, and precision quadrature generators that produce the LO drive for the mixers. The supply voltage range is 4.5V to 5.25V.
Key Features
- Frequency Range: 700MHz to 1050MHz
- High OIP3: +22.9dBm at 850MHz
- Low Output Noise Floor at 5MHz Offset:
- No RF:>
- 3-Ch CDMA2000 ACPR: –71.4dBc at 850MHz
- Integrated LO Buffer and LO Quadrature Phase Generator
- 50Ω AC-Coupled Single-Ended LO and RF Ports
- 50Ω DC Interface to Baseband Inputs
- Low Carrier Leakage: –43dBm at 850MHz
- High Image Rejection: –46dBc at 850MHz
- 16-Lead 4mm × 4mm QFN Package
Application
- Infrastructure Tx for Cellular Bands
- Image Reject Up-Converters for Cellular Bands
- Low-Noise Variable Phase-Shifter for 700MHz to 1050MHz Local Oscillator Signals
- RFID Reader
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LT5568-2EUF Datasheet PDF
LT5568-2EUF PDF Preview
Availability: 5271 PCS
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