DAC1408D650HW/C1 NXP [NXP Semiconductors], DAC1408D650HW/C1 Datasheet - Page 26

• Manufacturer Part Number: DAC1408D650HW/C1
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
DAC1408D650_1
Objective data sheet
10.8 DAC transfer function
Table 12.
The full-scale output current for each DAC is the sum of the two complementary current
outputs:
The output current depends on the digital input data:
The setting applied to CODING (register 00h[2]; see
map”) defines whether the DAC1408D650 operates with a binary input or a two’s
complement input.
Table 13 “DAC transfer function”
when I
Table 13.
I
I
I
First interpolation filter
Lower
H(1)
H(2)
H(3)
H(4)
H(5)
Data
0
...
8192
...
16383
O fs
IOUTP
IOUTN
=
O(fs)
=
=
I
I13/Q13 to I0/Q0
Binary
00 0000 0000 0000
...
10 0000 0000 0000
...
11 1111 1111 1111
IOUTP
I
I
Inversion filter coefficients
DAC transfer function
= 20 mA.
O fs
O fs
+
I
IOUTN
DATA
--------------- -
16383
16383 DATA
------------------------------------ -
16383
Rev. 01 — 26 May 2009
–
Dual 14-bit DAC, up to 650 Msps, 2 and 4 interpolating
Upper
H(9)
H(8)
H(7)
H(6)
-
Two’s complement
10 0000 0000 0000
...
00 0000 0000 0000
...
01 1111 1111 1111
shows the output current as a function of the input data,
Table 18 “Page 0 register allocation
DAC1408D650
Value
2
10
401
4
35
IOUTP
0 mA
...
10 mA
...
20 mA
© NXP B.V. 2009. All rights reserved.
IOUTN
20 mA
...
10 mA
...
0 mA
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(3)
(4)
(5)