u2794b ATMEL Corporation, u2794b Datasheet
u2794b
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u2794b Summary of contents
Page 1
... Perfect Performance for Large Variety of Wireless Applications Electrostatic sensitive device. Observe precautions for handling. 1. Description The silicon monolithic integrated circuit U2794B is a quadrature demodulator manu- ® factured using Atmel ’s advanced UHF technology. This demodulator features a frequency range from 70 MHz to 1000 MHz, low current consumption, selectable gain, power-down mode and adjustment-free handling ...
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... Figure 1-1. Block Diagram 5,6 14 Power down Pin Configuration Figure 2-1. Pinning SSO20 U2794B 2 IIX 0° 90°Control Frequency loop doubler 90° 16,18 GND QQX IIX RFX ...
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... QQ QQ lowpass filter Q 10 QQX QQX lowpass filter gain control 12 PCX PCX phase control phase control power up 15 LOX LOX input in 16 GND Ground input in 18 GND Ground output output 4653E–CELL–07/06 U2794B 3 ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Supply voltage Input voltage Junction temperature Storage-temperature range 4. Thermal Resistance Parameters Junction ambient SSO20 5. Operating Range Parameters Supply-voltage range Ambient-temperature range U2794B 4 Symbol Value +125 j T – ...
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... LO 0.4 0 1030 iRF –8 +3.5 1dBLG 35 2HG +3 3HG +13 3LG – –55 500II0.8 iRF 6-6 U2794B Unit Type µA B µ MHz D dBm MHz D dBm D dBm D dBm D dBm D IIpF D (VS – ...
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... For low signal distortion the load impedance should Referred to the level of the output vector 8. The low-gain status is achieved with an open or high-ohmic pin 11. A recommended application circuit for switching between high and low gain status is shown in U2794B 25°C, referred to test circuit ...
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... function is required, connect Pin 11 to GND. For high and low gain status GC´ switched to GND respectively to V Figure 6-2. 4653E–CELL–07/ and Q phase for f > For 1.5 1.0 Q 0.5 0 -0.5 -1.0 -1.5 time (arbitrary units) U2794B . S < f the phase is inverted ...
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... Figure 6-3. Figure 6-4. Figure 6-5. U2794B 8 Typical VSWR Frequency Response of the LO Input 250 450 LO Frequency ( MHz ) Noise Figure versus LO Frequency; o: Value at 950 MHz with RF Input Matching with 200 400 LO Frequency (MHz) Typical Suitable LO Power Range versus Frequency ...
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... LO Frequency (MHz) Typical Suitable LO Power Range versus Frequency 10 0 -10 -20 -30 -40 -50 0 200 400 LO Frequency (MHz) U2794B 600 800 1000 = –15 dBm and RF 600 800 1000 600 800 1000 9 ...
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... Figure 6-10. Typical S11 Frequency Response a: LO input, LO frequency from 100 MHz to 1100 MHz, marker: 950 MHz b: RF input, RF frequency from 100 MHz to 1100 MHz, marker: 950 MHz c: I/Q Outputs, Baseband Frequency from 5 MHz to 55 MHz, marker: 25 MHz U2794B 10 Typical Output Voltage (single ended) versus P PLO = 15 dBm – ...
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... Figure 6-11. Evaluation Board Layout Figure 6-12. Evaluation Board 4653E–CELL–07/06 U2794B 11 ...
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... CO, CS 6.3 Conversion to Single Ended Output (see datasheet of AD620) OP1, OP2 RG1, RG2 RD1, RD2 CS1, CS2 CS3, CS4 U2794B 12 100 100 100 pF optional external lowpass filters transmission line for RF-input matching, to connect optionally optional for AC-coupling at baseband outputs ...
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... Board material: epoxy 4.8, thickness = 0.5 mm, transmission lines: Z The board offers the following functions: • Test circuit for the U2794B: – The supply voltage and the control inputs GC, PC and PU are connected via a plug – The outputs I, IX are DC coupled via an plug strip or can be AC-connected – ...
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... Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 4653E-CELL-07/06 U2794B 14 Package Remarks SSO20 Tube, MOQ 830 pcs, Pb-free SSO20 Taped and reeled, MOQ 4000 pcs, Pb-free 6 ...
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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. © 2006 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 ...