pnx8510 NXP Semiconductors, pnx8510 Datasheet - Page 83

• Manufacturer Part Number: pnx8510
• Description: Analog Companion Chip
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12612
Product data
10.3.1 Programming example
Table 46:
(Output Level: Coarse Adjustment for each DAC)
Assuming an effective load of 75 Ω / 75 Ω= 37.5 Ω, Rset = 1 kΩ, the coarse bits are
set to 0 0 0 0 and the fine adjust bits are set to 0 0 0 0 0. The output will be sitting at
the minimum level of
Vout = 0.579 V.
For example, if Vout is set to 1 V, then the fine adjust bits should be set to 0 0 0 0 0
and the coarse adjust bits set to 1 0 1 0 0.
Figure 34
given output voltage and termination.
Bits
11111
43210
01110
01111
10000
10001
10010
10011
10100
10101
10110
10111
11000
11001
11010
11011
11100
11101
11110
11111
provides an example for calculating the RSet for the video DACs from
Separate I
Rev. 04 – 12 January 2004
2
C bits 31x21mV
…continued
Vout
+50.1%
+53.7%
+57.3%
+60.8%
+64.4%
+68%
+71.6%
+75.1%
+78.7%
+82.3%
+85.9%
+89.5%
+93.0%
+96.6%
+100.2%
+103.8%
+107.4%
+110.9%
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
PNX8510/11
Analog companion chip
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