U2730B-NFS

U2730B-NFS Datasheet


U2730B-N

Part Datasheet
U2730B-NFS U2730B-NFS U2730B-NFS (pdf)
Related Parts Information
U2730B-NFSG1 U2730B-NFSG1 U2730B-NFSG1
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• Supply Voltage V
• RF Frequency Range 1400 MHz to 1550 MHz
• IF Frequency Range 150 MHz to 250 MHz
• Enhanced IM3 Rejection
• Overall Gain Control Range 30 dB Typically
• DSB Noise Figure 10 dB
• Gain-controlled Amplifier and L-band Mixer
• Power-down Function for the Analog Part
• On-chip Gain-control Circuitry
• On-chip VCO, Typical Frequency MHz
• Internal VCO Can Be Overdriven by an External LO
• On-chip Frequency Synthesizer

Fixed LO Divider Factor 2464 Nine Selectable Reference Divider Factors 32, 33, 35, 36, 48, 49, 63, 64, 65 A Reference Oscillator Can Be Overdriven by an External Reference Signal Tristate Phase Detector with Programmable Charge Pump Programmable Deactivation of Tuning Output Lock-status Indication Test Interface

Electrostatic sensitive device. Observe precautions for handling.

L-band Down-converter for DAB Receivers

U2730B-N

The U2730B-N is a monolithically integrated L-band down-converter circuit fabricated with Atmel’s advanced UHF5S technology. This IC covers all functions of an L-band down-converter in a DAB receiver. The device includes a gain-controlled amplifier, a gain-controlled mixer, an output buffer, a gain control block, a power save function for the analog part, an L-band oscillator and a complete frequency syntheziser unit. The frequency syntheziser block consists of a reference oscillator/buffer, a reference divider, an RF divider, a tri-state phase detector, a loop filter amplifier, a lock detector, a programmable charge pump, a test interface and a control interface.

Figure Block Diagram

TH 17 18 AGC

RF 26 25

TANK 5 VREF 4

Power save analog part

Power down
1 PSM
15 OSCB

VCC1 VCC3 VCC4 VCC2 GND

Analog part
20 28

Internal 5 V supply voltage for frequency synthesizer Voltage
stabilizer

Bandgap
6, 7, 8, 21, 22, 23, 24

PLCK

RF counter 2464

Reference counter Nref

Lock detector

Tristate phase detector

Charge pump 200 m/300 m
16 OSCE

Test interface

Control interface
10 27 2

CI SI1 SI2
20k 12 CD
13 PD
2 U2730B-N

Pin Configuration

Figure Pinning SSO28

PSM 1 SI2 2

VCC1 3 VREF 4 TANK 5 GND 6

GND 7 GND 8 VCC2 9

CI 10 TI 11 CD 12 PD 13 PLCK 14
Ordering Information

Extended Type Number U2730B-NFS U2730B-NFSG1

Package SSO28

Remarks Tube Taped and reeled according to IEC 286-3

Package Information

Package SSO28

Dimensions in mm
technical drawings according to DIN specifications
16 U2730B-N

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Printed on recycled paper.
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Datasheet ID: U2730B-NFS 519466