MB86060 Fujitsu Media Devices Limited, MB86060 Datasheet - Page 4

• Manufacturer Part Number: MB86060
• Description: 16-Bit Interpolating Digital to Analog Converter
• Manufacturer: Fujitsu Media Devices Limited

Other benefits include a reduced effect due to the sinx/x roll-off due to the DAC sample and hold output
stage, which for a conventional DAC represents -4dB at Nyquist, compared to only -0.22dB when operating
in the x4 interpolating mode. Also the digital interpolation filters sharp cutoff and effective stop-band
attentuation improves both in and out-of-band SFDR. This is illustrated below.
The MB86060 features four interpolation filter modes x1, x2(slow), x2(fast) and x4. Mode x1 is as per a
conventional DAC, and choosing between the remaining three modes would depend on the system
requirements. Mode x2(slow) may be advantageous to a system requiring the benefits of interpolation
filtering but saving some power by not running the DAC core at full rate. Mode x2(fast) gives access to the
wider band, slower roll-off interpolation filter allowing wider band signals to be generated compared to the
other modes, for example 74MHz (-0.1dB) for 200MSa/s data rate. Mode x4 for the complete interpolation
filter operation.
Page 4 of 6
X2 (slow)
X2 (fast)
mode
mode
mode
mode
x1
x4
Filter Pass Band = 0.43.F
Filter Pass Band = 0.37.F
Filter Pass Band = 0.43.F
0
0
0
0
-4dB
-0.9dB
-0.22dB
F
DAT
100
100
100
100
DAT
DAT
DAT
F
F
DAT
DAT
& F
-0.9dB
MB86060 16-Bit Interpolating Digital to Analog Converter
(-0.1dB)
(-0.1dB)
(-0.1dB)
DAC
-13dB
200
200
F
200
200
F
DAT
DAC
Sinx
x
Sinx
x
-18dB
Copyright © 2000 Fujitsu Microelectronics Europe GmbH
Sinx
300
300
300
300
x
-13dB
Sinx
x
June 2000 Version 1.2
F
400
400
400
400
F
DAC
DAC
FME/MS/SFDAC1/FL_1/4270
www.DataSheet4U.com
500 MHz
500 MHz
500 MHz
500 MHz