CMX991 Datasheet, PDF (6/56 Pages) CML Microcircuits – Two-mode demodulator

RF Quadrature Transceiver / RF Quadrature Receiver
CMX991/CMX992
1.1 History
Version
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
Changes
 1S305 (typo) corrected to 1SV305; SMV1279 (typo) corrected to SMV1249
 Typo in note to section 4.5 corrected, ‘b1’ corrected to ‘b7’
 Information added on Rx dc offset variation with temperature (section 7.13)
 Receiver IF section 1 dB Compression point changed to typical; measurement
method clarified (section 8.1.3.2).
 Half IF specification changed to reflect production test limit (section 8.1.3.2).
 JDV2S08S replaced with 1S305FCT in Table 14 as JDV diode is obsolete.
 Various editorial corrections.
 Alternative diodes added in Table 11.
 VCO N divider start-up issue when using an external VCO (section 4.5)
 Clarification of gain and noise of IF stage in ‘Straight in’ case (section 7.7)
 Editorial changes for consistency of table header format
 Update of receiver gain partition (section 7.3.1)
 Details of receiver gain switching added (Section 7.3.2)
 PLL frequency formula added (section 5.4.1)
 Phase noise formula typo corrected (M not N) (section 8.1.3.2 Note 94)
 CMX991: Transmitter LO Leakage specification clarified and limits adjusted
 CMX991: Transmitter LO Image typical value updated
 Transmitter I and Q channels shown in error causing a spectrum inversion in
Tx path. Pins TXQN and TXQP swapped (Table 1)
 Editorial error in Table 13 corrected.
 Rx IMD minimum specification improved after evaluation of production test
fixture (section 8.1.3.2)
 Redundant series capacitor deleted and separate capacitors shown for C3 in
Figure 7 and Table 5
 Extra information on Mixer Output Impedance added (section 7.6).
 Table 13 updated.
 Extra information added on IF gain measurement conditions in (section 7.7).
 Extra information added on Rx I/Q Filter, (section 7.10).
 Extra information added on Tx Filter, (section 7.12).
 Maximum limits added for ‘Total Current Consumption’ figures’, (Section
8.1.3.1)
 LO Leakage performance specification updated; clarification of Note 7 and 7a;
new Note 7b; reference corrected in Note 11; test frequency of 45MHz moved
from Note 17 to Note 10; Gain of I/Q Filter moved to overall IF Amplifier and
I/Q Demodulator table (Section 8.1.3.2).
 PLL Phase noise specification corrected and definition added
 I/Q Bandwidth clarified in section 4.2.3.2.
 VCO specification corrected. It should be 400MHz (max).
 dBV/V terminology clarified. It should be dB(V/V)
 Clarification of Rx 1st Mixer Input 3rd order Intercept Point measurement
 Correction to C5 in Figure 7, the circuit referenced in IIP3 measurement
 Updated with further application information (e.g. IF VCO options).
 Updated with enhanced application information.
 Original published document for both the CMX991 and CMX992 devices.
Date
Feb 2015
Oct 2012
May 2012
Feb 2012
Jun 2011
Mar 2011
Dec 2010
Sep 2010
Jun 2010
Mar 2010
Jan 2010
Nov 2009
July 2009
May 2009
Mar 2009
It is always recommended that you check for the latest product datasheet version from the CML website:
[www.cmlmicro.com].
 2015 CML Microsystems Plc
6
D/991_992/20