DAC1405D750_11 PHILIPS [NXP Semiconductors], DAC1405D750_11 Datasheet - Page 26

• Manufacturer Part Number: DAC1405D750_11
• Description: Dual 14-bit DAC, up to 750 Msps; 4x and 8x interpolating
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
DAC1405D750
Product data sheet
10.7 Quadrature modulator and Numerically Controlled Oscillator (NCO)
Table 36.
The quadrature modulator allows the 14-bit I and Q-data to be mixed with the carrier
signal generated by the NCO.
The frequency of the Numerically Controlled Oscillator (NCO) is programmed over 32-bit
and allows the sign of the sine component to be inverted in order to operate positive or
negative, lower or upper single sideband up-conversion.
First interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
H(13)
H(14)
H(15)
H(16)
H(17)
H(18)
H(19)
H(20)
H(21)
H(22)
H(23)
H(24)
H(25)
H(26)
H(27)
H(28)
Upper
H(55)
H(54)
H(53)
H(52)
H(51)
H(50)
H(49)
H(48)
H(47)
H(46)
H(45)
H(44)
H(43)
H(42)
H(41)
H(40)
H(39)
H(38)
H(37)
H(36)
H(35)
H(34)
H(33)
H(32)
H(31)
H(30)
H(29)
-
Interpolation filter coefficients
All information provided in this document is subject to legal disclaimers.
Value
4
0
13
0
34
0
72
0
138
0
245
0
408
0
650
0
1003
0
1521
0
2315
0
3671
0
6642
0
20756
32768
Rev. 4 — 7 June 2011
Dual 14-bit DAC, up to 750 Msps; 4 and 8 interpolating
Second interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
H(9)
H(10)
H(11)
H(12)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Upper
H(23)
H(22)
H(21)
H(20)
H(19)
H(18)
H(17)
H(16)
H(15)
H(14)
H(13)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Value
2
0
17
0
75
0
238
0
660
0
2530
4096
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DAC1405D750
Third interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
H(6)
H(7)
H(8)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Upper
H(15)
H(14)
H(13)
H(12)
H(11)
H(10)
H(9)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
© NXP B.V. 2011. All rights reserved.
273
4964
Value
39
0
0
1102
0
8192
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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