AKD8126 AKM | Alldatasheet
Document overview
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Technical content
ASAHI KASEI EMD CORPORATION Evaluation Board for AK8126 AKD8126
Description
The AKD8126 is an evaluation board for spread spectrum clock generator, AK8126. Therefore, it is possible to evaluate spectrum characteristics and other performances. Ordering guide AKD8126 Block Diagram AK8126 Evaluation Board AKD0548-E-00 Jan-08
Figure 1. AKD8126 top view Please connect the lead line to VDD (3.3V; Red) and VSS (GND; Black). It is possible to input clock from SMA-A connector. Matching resistor is mountable here if impedance matching is necessary.
of AKEMD’s IC’s 5. DIPSW 5.1. Mode selection (C / D / OFF) Modulation mode is selected by setting this switch. L M H Table 5.1. Modulation mode setting C / D / OFF Mode L Down spread M Spread off H Center spread 5.2. Operation clock frequency range selection (FR1 / FR0) Operation frequency range is selected by setting this switch. L H FR1 FR0 Table 5.2. Operation clock frequency setting FR1 FR0 Input frequency range Output frequency range L L 16-32MHz 16-32MHz(1x) L H 32-64MHz 32-64MHz(1x) H L 64-128MHz 64-128MHz(1x) H H 16-32MHz 64-128MHz(4x) Note: AK8126 outputs a input frequency x 4, when FR1/FR0=”HH” is selected. 5.3. Modulation ratio selection Modulation ratio is selected by setting this switch. L H FR1 FR0 L H Table 5.3. Modulation ratio setting S1 S0 Center spread C / D / OFF = ”H” Down spread C / D / OFF = ”L” L L ±0.5% -1.0% L H ±0.25% -0.5% H L ±1.0% -2.0% H H ±1.5% -3.0% 6. Quartz oscillator foot pattern EPSON TOYOCOM (MA-406) or 49 lead type quartz oscillator is mountable. Jan-08 AKD0548-E-00
of AKEMD’s IC’s Example of spectrum measurement 51MHz, Center spread: ±1.0% Jan-08 AKD0548-E-00
Date: Sheet of <Doc> <RevCode> AKD8126_10PIN A 1 1 Wednesday, January 30, 2008 Title Size Document Number Rev Date: Sheet of <Doc> <RevCode> AKD8126_10PIN A 1 1 Wednesday, January 30, 2008 Title Size Document Number Rev Date: Sheet of <Doc> <RevCode> AKD8126_10PIN A 1 1 Wednesday, January 30, 2008 GND GND
1 VDD
1 GND
RES_PIN 0.1uF M A 4 0 6 _ 8 1 2 6 (Not Mount) (Not Mount) (Not Mount) (Not Mount) (Not Mount) (Not Mount)C1 CAP_CHIPC1 CAP_CHIP C5 CAP_PINC5 CAP_PIN CAP_PIN CAP_PIN SW4 SW SW4 SW C6 CAP_PINC6 CAP_PIN C2 CAP_CHIPC2 CAP_CHIP SW1 SW SW1 SW R7 RES_PINR7 RES_PIN 100 100 AK8126 NEW_TMSOP10_8126 AK8126 NEW_TMSOP10_8126 5 6 SMA SMA CKIN G n d 1 G n d 2G n d 3 G n d 4 U 1 ( N o t M o u n t ) U 1 ( N o t M o u n t ) SW2 SW SW2 SW RES_PIN RES_PIN SMA SMA CKIN G n d 1 G n d 2G n d 3 G n d 4 SW3 SW SW3 SW CAP CAP SW5 SW SW5 SW