Download PDFABM0127 ABRACON
Document overview
- Manufacturer or author: Provided By digicamel.com
- PDF pages: 4
Technical content
27MHz XO IC with Audio Clock (for Set Top Boxes & MPEG Video) 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1
FEATURES
- 27MHz reference output (from 27MHz crystal input or clock input).
- Selectable Audio Clocks supporting: Fs of 32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz 8.192MHz, 11.2896MHz, 12.288MHz, and 24.576MHz audio frequencies
- On-the-fly switching of the audio frequency.
- 3.3V Operating Voltage.
- Available in 8-Pin SOIC.
DESCRIPTION
The ABM0127 is a low cost integrated XO IC designed to work with a fundamental 27MHz crystal or a clock input. In addition to a 27MHz clock reference, it provides the most common audio clocks (8.192, 11.2896, 12.288, and 24.576MHz) required by sampling rates of 32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz, making the chip ideal for STB and MPEG Video applications. PACKAGE PIN CO NFIGURATION Note: ^: Internal pull-up resistor . The internal pull-up resistor results in a default high value when no pull-down resistor is connected to this pin. AUDIO CLOCK SELECTION S1 S0 ACLK (MHz) 0 0 8.192 0 1 11.2896 1 0 12.288 1 1 24.576 BLOCK DIAGRAM Xout 27MHz Xin [S1-S0] Audio PLL XO ACLK ABM01271
8 XOUT
S1^ ACLK S0^
27MHz XO IC with Audio Clock (for Set Top Boxes & MPEG Video) 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 2 PIN DESCRIPTIONS Name Pin # Type Description XIN 1 I Crystal input to be connected to fundamental parallel mode crystal. (C L=15 pF) or clock input. VDD 2 P Power supply. GND 3 P Ground. 27MHz 4 O 27MHz reference output. ACLK 5 O Audio clock output (see selection table on page 1). S1 6 I Digital control input to select audio frequency. 60k Ω internal pull-up. S0 7 I Digital control input to select audio frequency. 60k Ω internal pull-up. XOUT 8 I Crystal output. Notes: I – input pin; P – power supply/ground pin. ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS SYMBOL MIN. MAX. UNITS Supply Voltage V DD 4.6 V Input Voltage, dc V I -0.5 V DD +0.5 V Output Voltage, dc V O -0.5 V DD +0.5 V Storage Temperature T S -65 150 °C Ambient Operating Temperature* T A -40 85 °C Junction Temperature T J 125 °C Lead Temperature (soldering, 10s) 260 °C ESD Protection, Human Body Model 2 kV Exposure of the device under conditions beyond the limits specif ied by Maximum Ratings for extended periods may cause permanent damage to the device and affect product reliability. Thes e conditions represent a stress rating on ly, and functional operations of the devic e at these or any other conditions above the operational limits noted in this spec ification is not implied. * Note : Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only . 2. Crystal Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Crystal Resonator Frequency F XIN Parallel Fundamental Mode 27 MHz Crystal Loading Rating C L (xtal) 15 pF Recommended ESR R E AT cut 30 Ω
27MHz XO IC with Audio Clock (for Set Top Boxes & MPEG Video) 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3 3. General Electrical Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Supply Current, Dynamic (with Loaded Outputs) I DD 15pF Load 20 30 mA Operating Voltage V DD 2.97 3.30 3.63 V 4. AC Electrical Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Input Crystal Frequency 27 MHz 0.8V ~ 2.0V with 10 pF load 1.5 Output Clock Rise Time 0.3V ~ 3.0V with 15 pF load 2.4 5 2.0V ~ 0.8V with 10 pF load 1.5 Output Clock Fall Time 3.0V ~ 0.3V with 15pF load 2.4 5 ns Output Clock Duty Cycle Measured @ 1.4V 45 50 55 % Short Circuit Current ±50 mA 5. Jitter Specifications PARAMETERS CONDITIONS FREQUE NCY MIN. TYP. MAX. UNITS Cycle to Cycle Jitter T cyc-cyc 27MHz 100 ps Cycle to Cycle Jitter T cyc-cyc Audio Clock 150 ps
27MHz XO IC with Audio Clock (for Set Top Boxes & MPEG Video) 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 4
PACKAGE INFORMATION
ORDERING INFORMATION
Abracon Corporation, reserves the right to make changes in its products or specifications, or bo th at any time without notice. The information furnished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the a ccuracy of said information and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product. LIFE SUPPORT POLICY : Abracon’s products are not authorized for use as critical comp onents in life support devices or systems without the express written approval of the President of Abracon Corporation. C L A EH D e B
8 PIN SOIC (in mm)
Symbol Min. Max. A 1.47 1.73 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 4.95 E 3.80 4.00 H 5.80 6.20 L 0.38 1.27 e 1.27 BSC For part ordering, please contact our Sales Department: 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 PART NUMBER The order number for this device is a combination of the following: Device number, Package type and Operating temperature range ABM0127 X X X X Order Number Marking Package Option ABM0127SC ABM0127SC SOIC - Tube ABM0127SC-T ABM0127SC SOIC - Tape and Reel ABM0127SCL ABM0127SCL SOIC - Tube ABM0127SCL-T ABM0127SCL SOIC - Tape and Reel PART NUMBER TEMPERATURE C=COMMERCIAL, I =INDUSTRIAL PACKAGE TYPE S=SOIC NONE=NORMAL PACKAGE L=GREEN PACKAGE NONE= TUBE T=TAPE AND REEL