atr2730 ATMEL Corporation, atr2730 Datasheet
atr2730
Related parts for atr2730
atr2730 Summary of contents
Page 1
... Programmable Deactivation of Tuning Output – Lock-status Indication – Test Interface 1. Description The ATR2730 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 synthesizer unit ...
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... Block Diagram AGC NRF 25 5 TANK VCO VREF 4 Power save (analog part) Lock detector 1 PSM OSCB ATR2730 [Preliminary VCC1 VCC3 Internal 5V supply voltage for frequency synthesizer Analog Band- part gap RF counter : 2464 Reference counter : Nref Test interface 15 16 ...
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... PSM 1 28 VCC4 SI2 2 27 SI1 VCC1 VREF 4 25 NRF TANK 5 24 GND GND 6 23 GND GND 7 22 GND GND 8 21 GND VCC2 9 20 VCC3 AGC OSCE PLCK 14 15 OSCB ATR2730 [Preliminary] 3 ...
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... OSCE Output of internal oscillator/buffer 17 TH Threshold voltage of comparator 18 AGC Charge-pump output of comparator, AGC input for amplifier and mixer 19 IF Intermediate frequency output 20 VCC3 Supply voltage 25 NRF RF input (inverted input 27 SI1 Control input 28 VCC4 Supply voltage ATR2730 [Preliminary] 4 4903C–DAB–03/07 ...
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... The voltage at pin AGC is in the range of 5.75V for maxi- mum gain and 0.3V for minimum gain. This voltage can be use to control a dual-gate GaAs-FET in front of the ATR2730 to achieve an extended AGC range. By applying an external voltage to the AGC pin, the internal AGC loop can be overdriven. ...
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... Overall Properties of the Signal Path The overall gain of this circuit amounts to 24 dB, the gain-control range is about 30 dB. With a new AGC concept in the amplifier and mixer, the ATR2730 reaches better intermodulation dis- tances (DIM3) at higher IF-output power levels. 3.6 Power Save Mode For VPSM > ...
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... These scaling factors result in an output frequency of the reference divider of 512 kHz. If har- monics of the Bd. 3 VCO fall in the L-band reception band, these spurious signals can influence the AGC of ATR2730, which could be a problem for small incoming signals. In this case it is possible to switch the reference divider from n “ ...
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... TI. Analogous to the reference divider, a test signal monitoring the output frequency of the RF divider appears at the test interface output pin TI, if the input control pin CI is connected to V /2. CC Table 3-2. ATR2730 [Preliminary] 8 Control Interface (CI) Settings CI PD GND 200 µA V 300 µ ...
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... TANK OSCB and 27 CI, SI1, SI2 PLCK 14 V PLCK stg Pins Symbol and amb Symbol R thJA ATR2730 [Preliminary] Value Unit – 0.3 to +9.5 V 750 mV 0 – 0 – 0.3 to +9.5 V 0.5 mA – 0.3 to +5.5 ...
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... Minimum input power VCO overdriven, see “Application Circuit” 6.4 Maximum input power 10-3 on page 7 Frequency Synthesizer 7.1 RF divide factor *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter ATR2730 [Preliminary unless otherwise specified. (See application circuit Pin – dBm RF < 0.5V PSM – ...
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... C unless otherwise specified. (See application circuit Pin 5.5V PLCK = 0.25 mA PLCK 2 and pF, load load / ATR2730 [Preliminary] Figure 10-3 on page Symbol Min. Typ. Max ref ref V 30 refs V 300 refmax Z 2.7k || 2.5 ref I ...
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... Gain Control Characteristics Operating conditions: V Figure 8-1. Figure 8-2. ATR2730 [Preliminary 8.5V amb IF Output Power (Pin 19) -10 -15 -20 - 100 k th -30 -35 -40 -60 -50 -40 pRF (dBm) Gain Control Voltage (Pin 11 100 -60 -50 -40 pRF (dBm) = 1490 MHz 1261 ...
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... A low phase-noise signal generator (Marconi Figure 9-1. Center 1.261 568 GHz RB 100 Hz VB 100 Hz 4903C–DAB–03/07 Phase-noise Performance Operating Conditions 200 µ -29.29 dBm ATTEN 10 dB 10.00 dB/DIV ATR2730 [Preliminary] ® 2042) was taken as PLL reference. = 17.92 MHz, –10 dB, REF < -75 dBc/Hz Span 50.00 kHz ST 15.00 sec 13 ...
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... Equivalent Circuits Figure 10-1. AGC Control Circuit Figure 10-2. VCO Circuit ATR2730 [Preliminary] 14 Gain controlled mixer 550 MHz IF output 60 MHz V Ref2 Tune 47 k BBY51 1 TANK Resonator 1 pF VREF 100 pF Resonator: Ceramic coaxial resonator Murata 3 3 mm, 1.6 GHz DRR030 KE1R600TC Gain controlled ...
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... ATR2730 100 pF 8.5V 8. REF ATR2730 [Preliminary] VAGC 3.3 µ 100 100 100 ...
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... Application Circuit for External LO Signal With an external LO signal it is possible to overdrive the VCO. In this case, the internal VCO acts buffer. Figure 11-1. Application Circuit for External LO Signal Figure 11-2. Reference Oscillator Operation Figure 11-3. Reference Oscillator Overdriven ATR2730 [Preliminary] 16 External LO signal (50 signal gen -10 dBM ...
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... History Put datasheet in a new template Section 12 “Ordering Information” on page 17 changed ATR2730 [Preliminary] Remarks Tube, Pb-free Taped and reeled according to IEC 286-3, 180 µm size, Pb-free Taped and reeled according to IEC 286-3, 330 µm size, Pb-free 5.4 ±0.2 4.4 ± ...
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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2007 Atmel Corporation. All rights reserved. Atmel marks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...