ABM0122 ABRACON

Document overview

  • Manufacturer or author: Provided By digicamel.com
  • PDF pages: 4

Technical content

27MHz Multiple output XO with Audio Clock 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1

FEATURES

  • 2 XO outputs at 27MHz (27MHz crystal input).
  • Selectable Audio Clocks supporting: ƒ 32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz sampling rates ƒ 256, 384 and 512 oversampling ratios 18.432, 22.5792, 24.576MHz audio frequencies
  • On-the-fly switching of the audio frequency
  • Power down tri-state selector.
  • 3.3V Operating Voltage.
  • Available in 16-Pin SSOP

DESCRIPTION

The ABM0122 is a low cost integrated XO IC with power down feature, designed to work with a fundamental 27MHz crystal to provide the most common audio clocks (8.192, 11.2896, 12.288, required by sampling rates of 32kHz, 44.1kHz, 48kHz, 64kHz and 96kHz (256, 384 and 512 oversampling ratios). The wide range of audio frequencies makes it 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 S2 S1 S0 ACLK (MHz) 0 0 0 8.192 0 0 1 11.2896 0 1 0 12.288 0 1 1 16.9344 1 0 0 18.432 1 0 1 16.384 1 1 0 22.5792 1 1 1 24.576 BLOCK DIAGRAM ABM0122 XIN 9 XOUT VDD VDD NC GND GND PDOWN^ S1^ 27MHz VDD S0^ 27MHz GND ACLK S2^ XIN = 27 MHz Xout PDOWN 27MHzXin [S2-S0] Audio PLL XO ACLK 27MHz

27MHz Multiple output XO with Audio Clock 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. (CL=14.5pF). XOUT 2 I Crystal output connector. VDD 3 P 3.3V power supply. VDD 4 P 3.3V power supply. NC 5 I Not Connected. GND 6 P Ground. GND 7 P Ground. PDOWN 8 I Digital control input. This input powers down the entire chip and tri-states all outputs when low. 60k Ω internal pull-up. S2 9 I Digital control input to select audio frequency. 60k Ω internal pull-up. ACLK 10 O Audio clock output (see selection table on page 1). GND 11 P Ground. 27MHz 12 O 27MHz XO output. S0 13 I Digital control input to select audio frequency. 60k Ω internal pull-up. VDD 14 P 3.3V power supply. 27MHz 15 O 27MHz XO output. S1 16 I Digital control input to select audio frequency. 60k Ω internal pull-up. Notes: I – input pin; P – power supply/ground pin; O – output 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 .

27MHz Multiple output XO with Audio Clock 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3 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) 14.5 pF Recommended ESR R E AT cut 30 Ω 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 2.5 4 2.0V ~ 0.8V with 10 pF load 1.5 Output Clock Fall Time 3.0V ~ 0.3V with 15pF load 2 3 ns Output Clock Duty Cycle 50% V DD 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 Multiple output XO with Audio Clock 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

C L A EH D e B

16 PIN SSOP ( inch )

Symbol Min. Nom. A .053 .064 A1 .004 .006 B .008 C .007 D .189 .193 E .150 .154 H .228 .236 L .016 .025 e .025 BASIC Max. .069 .010 .012 .010 .197 .157 .244 .050

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. 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 ABM0122 X X X X Order Number Marking Package Option ABM0122XC ABM0122XC 16-pin SSOP - Tube ABM0122XC-T ABM0122XC 16-pin SSOP - Tape and Reel ABM0122XCL ABM0122XCL 16-pin SSOP - Tube ABM0122XCL-T ABM0122XCL 16-pin SSOP - Tape and Reel PART NUMBER TEMPERATURE C=COMMERCIAL, I =INDUSTRIAL PACKAGE TYPE X=SSOP NONE=NORMAL PACKAGE L=GREEN PACKAGE NONE= TUBE T=TAPE AND REEL