DK86060-3 Fujitsu Semiconductor America Inc, DK86060-3 Datasheet - Page 26

• Manufacturer Part Number: DK86060-3
• Description: KIT DEV 16BIT DAC FOR MB86060
• Manufacturer: Fujitsu Semiconductor America Inc

Specifications of DK86060-3

• Number Of Dac's: 1
• Number Of Bits: 16
• Outputs And Type: 1, Differential
• Sampling Rate (per Second): 400M
• Data Interface: Parallel
• Dac Type: Current
• Voltage Supply Source: Single
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: MB86060
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 865-1009

4.5
To provide a differential analog output which is both isolated form the analog ground plane, and which
gives good common mode rejection, a two stage transformer circuit can be used. The recommended
devices are Mini-Circuits (www.minicircuits.com) ADTT1-1, 1:1 transformer, and ADTL1-4-75
transmission line transformer. The primary of the ADTL1-4-75 is connected to IOUT and IOUTB,
(terminated as shown in figure 15) and the secondary is connected to the ends of the secondary of
the ADTT1-1. The center tapping of the secondary of the ADTT1-1 will be linked to the analog ground
plane. The primary of the ADTT1-1 will be terminated as required by the application circuit. See figure
15.
For optimum performance the transformer should be positioned as close to the device as physically
possible, and should be connected to the analog output pins IOUT and IOUTB with 50 tracks. The
connections to the analog ground plane should be made through the same vias as the decoupling
capacitors, which are shown in figure 13 as being on the outside of the device pad pattern, so that
the track length and hence loop inductance can be kept to a minimum.
4.6
The reference input clock can be connected in a number of ways, depending on the clock source
used. For optimum performance the MB86060 should have ground isolation from the source by the
use of a coupling transformer.
The simplest method is to use the internal oscillator, with a crystal connected across XIN and XOUT.
A 1M
depending on crystal used) should be connected from both XIN and XOUT to the clock ground
region. See figure 16a.
A single ended CMOS crystal oscillator can be used, connected to XIN. This source can be
connected to the clock ground region as long as there are no other devices connected to the clock
signal, i.e. the oscillator has a fan-out of one. See figure 16b.
Page 26 of 44
Disclaimer: The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before
resistor should be connected in parallel with the crystal, and capacitors (typically 22pF,
Analog Output
Clock Input
ordering.The information and circuit diagrams in this document are presented “as is”, no license is granted by implication or otherwise.
MB86060
Figure 15 Analog Out Transformer Coupling
IOUTB
MB86060 16-bit Interpolating Digital to Analog Converter
AVSS
IOUT
Production
AGND
* 0.1% Precision resistors
100
50
50
*
*
50
22pF
Copyright © 2003-2009 Fujitsu Microelectronics Europe GmbH
ADTL1-4-75
AGND
ADTT1-1
February 2009 Version 2.0
Analog out
FME/MS/SFDAC1/DS/4250