ACTF303875

Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com The ACTF303.875/303.875/TO39 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter in a low-profile metal TO-39 case designed to provide front-end selectivity in 303.875 MHz receivers. Receiver designs using this filter include superhet with 10.7 MHz or 500 kHz IF, direct conversion and superregen. 1.Package Dimension (TO-39) 2. Pin 1 2 3 Dimension A B C D E Configuration Input / Output Output / Input Case Ground Data (unit: mm) 9.30±0.20 5.08±0.10 3.40±0.20 3±0.20⁄5±0.20 0.45±0.20 3.Test Circuit In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice. ISO9001: 2000 Registered - Registration number 6830/2 For quotations or further information please contact us at: 3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK Issue : 1 C1 Date : SEPT 04 http://www.actcrystals.com Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com 4.Typical Frequency Response 5.Performance 5-1.Maximum Rating Rating CW RF Power Dissipation DC Voltage Between Any Two Pins Storage Temperature Range Operating Temperature Range P VDC Tstg TA Value +10 ±30 -40 to +85 -10 to +60 Unit dBm V °C °C In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice. ISO9001: 2000 Registered - Registration number 6830/2 For quotations or further information please contact us at: 3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK Issue : 1 C1 Date : SEPT 04 http://www.actcrystals.com Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com 5-2.Electronic Characteristics Characteristic Centre Frequency (Centre frequency between 3dB points) Insertion Loss 3dB Bandwidth at fC -21.4MHz (Image) Rejection at fC -10.7MHz (LO) Ultimate Turnover Temperature Temperature Turnover Frequency Frequency Temperature Coefficient Frequency Aging Absolute Value during the First Year TO fO FTC | fA| fC IL BW3 40 20 -25 fC 0.032 10 -Minimum Typical 303.875 3.0 600 50 30 60 4.5 800 ---55 °C MHz ppm/°C 2 Maximum Unit MHz dB kHz dB ppm/yr iCAUTION: Electrostatic Sensitive Device. Observe precautions for handling! 1. 2. The frequency fC is defined as the midpoint between the 3dB frequencies. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture that is connected to a 50 Ω test system with VSWR ≤1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter centre frequency, f C. Note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. Unless noted otherwise, specifications apply over the entire specified operating temperature range. Frequency aging is the change in f C with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures above +65°C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. Turnover temperature, T0, is the temperature of maximum (or turnover) frequency, f 0. The nominal frequency 2 at any case temperature, T C, may be calculated from: f = f 0 [1 - FTC (T 0 - TC) ]. The specifications of this device are based on the test circuit shown above and subject to change or obsolescence without notice. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale. Our liability is only assumed for the Surface Acoustic Wave (SAW) component(s) per se, not for applications, processes and circuits implemented within components or assemblies. 3. 4. 5. 6. 7. 8. In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice. ISO9001: 2000 Registered - Registration number 6830/2 For quotations or further information please contact us at: 3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK Issue : 1 C1 Date : SEPT 04 http://www.actcrystals.com