DAC1405D750_11 PHILIPS [NXP Semiconductors], DAC1405D750_11 Datasheet - Page 30

• 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
10.11 Digital offset adjustment
Table 39.
Default settings are shown highlighted.
The settings applied to DAC_A_GAIN_FINE[5:0] (see
(address 0Ah) bit
“DAC_B_Cfg_2 register (address 0Dh) bit
full-scale current (see
Table 40.
Default settings are shown highlighted.
The coding of the fine gain adjustment is two’s complement.
When the DAC1405D750 analog output is DC connected to the next stage, the digital
offset correction can be used to adjust the common-mode level at the output of the DAC.
It adds an offset at the end of the digital part, just before the DAC.
The settings applied to DAC_A_OFFSET[11:0] (see
(address 09h) bit description”
description”) and to “DAC_B_OFFSET[11:0]” (see
(address 0Ch) bit description”
description”) define the range of variation of the digital offset (see
DAC_GAIN_COARSE[3:0]
Decimal
13
14
15
DAC_GAIN_FINE[5:0]
Decimal
32
...
0
...
31
I
I
O(fs)
O(fs)
coarse adjustment
fine adjustment
All information provided in this document is subject to legal disclaimers.
description”) and to DAC_B_GAIN_FINE[5:0] (see
Table
Rev. 4 — 7 June 2011
40).
Dual 14-bit DAC, up to 750 Msps; 4 and 8 interpolating
and
Binary
1101
1110
1111
Two’s complement
10 0000
...
00 0000
...
01 1111
and
…continued
Table 21 “DAC_A_Cfg_3 register (address 0Bh) bit
Table 24 “DAC_B_Cfg_3 register (address 0Eh) bit
description”) define the fine variation of the
Table 22 “DAC_B_Cfg_1 register
Table 19 “DAC_A_Cfg_1 register
Table 20 “DAC_A_Cfg_2 register
DAC1405D750
I
20.0
21.0
22.0
Delta I
10.3 %
...
0
...
+10 %
O(fs)
(mA)
Table
O(fs)
Table 23
© NXP B.V. 2011. All rights reserved.
41).
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