ACT303K ACT | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 3
Technical content
Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com 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
http://www.actcrystals.com
1 OF 3
The ACT303K/303.875/TO39 is a true one-port, surface-acoustic-wave ( SAW) resonator in a low-profile metal TO-39 case. It provides reliable, fundamental-mode, quartz frequency stabilization i.e. in transmitters or local oscillators operating at 303.875 MHz. 1.Package Dimension (TO-39) 3.Equivalent LC Model and Test Circuit 4.Typical Application Circuits 1) Low-Power Transmitter Application 2) Local Oscillator Application Pin Configuration
1 Input / Output
2 Output / Input
3 Case Ground
Dimension Data (unit: mm) A 9.30±0.20 B 5.08±0.10 C 3.40±0.20 D 3±0.20 ⁄5±0.20 E 0.45±0.20 Issue : 1 C1 Date : SEPT 04
Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com 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: http://www.actcrystals.com
2 OF 3
5.Typical Frequency Response 6.Temperature Characteristics 7.Performance 7-1.Maximum Ratings Rating Value Units CW RF Power Dissipation 0 dBm DC Voltage Between Any Two Pins ±30V VDC Case Temperature -40 to +85 °C 7-2.Electronic Characteristics Characteristic Sym Minimum Typical Maximum Units Absolute Frequency f C 303.800 303.950 MHz Centre Frequency (+25°C) Tolerance from 303.875 MHz ΔfC ±75 kHz Insertion Loss IL 1.5 2.0 dB Unloaded Q Q U 12,500 Quality Factor 50 Ω Loaded Q QL 2,000 Turnover Temperature T 0 25 55 °C Turnover Frequency f 0 f C kHz Temperature Stability Frequency Temperature Coefficient FTC 0.032 ppm/°C Frequency Aging Absolute Value during the First Year |fA| ≤10 ppm/yr DC Insulation Resistance Between Any Two Pins 1.0 MΩ Motional Resistance R M 19 26 Ω Motional Inductance L M 124.7160 µH Motional Capacitance C M 2.2018 fF RF Equivalent RLC Model Pin 1 to Pin 2 Static Capacitance C 0 2.25 2.55 2.85 pF iCAUTION: Electrostatic Sensitive Device. Observe precautions for handling! Issue : 1 C1 Date : SEPT 04
Tel : +44 118 979 1238 Fax : +44 118 979 1283 Email: info@actcrystals.com 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: http://www.actcrystals.com
3 OF 3
- The centre frequency, f C, is measured at the minimum IL point with the resonator in the 50 Ω test system. 2. Unless noted otherwise, case temperature T C = +25°C±2°C. 3. 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. 4. Turnover temperature, T 0, is the temperature of maximum (or turnover) frequency, f 0. The nominal frequency at any case temperature, TC, may be calculated from: f = f 0 [1 - FTC (T0 - TC)2]. 5. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance C 0 is the measured static (non-motional) capacitance between Pin1 and Pin2. The measurement includes case parasitic capacitance. 6. Derived mathematically from one or more of the following directly measured parameters: f C, IL, 3 dB bandwidth, fC versus TC, and C0. 7. The specifications of this device are based on the test circuit shown above and subject to change or obsolescence without notice. 8. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer. 9. 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. Issue : 1 C1 Date : SEPT 04