tda8296 NXP Semiconductors, tda8296 Datasheet - Page 69

• Manufacturer Part Number: tda8296
• Description: Tda8296 Digital Global Standard Low If Demodulator For Analog Tv And Fm Radio
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA8296
Product data sheet
The following relation gives the value of the full-scale current I
resistance value and value of B_DA_V[5:0] (part of register 0x35h) and value of
B_DA_S[5:0] (part of register 0x36h) (B_DA_V or B_DA_S):
0 ≤ B_DA_V/S ≤ 63
For programming of B_DA_V see
The DAC signal range used for CVBS and sound signal is reduced to provide headroom.
The signal headroom is shown in
corresponds to digital input value of 1034. For the pins VIOUT_P and SIOUT_P the
corresponding signal shapes of CVBS and sound signal can be mapped linear to the full
scale DAC current. For the CVBS signal the sync level is fixed, the white level depends
also on register value CVBS_LVL[7:0]. For the sound signal the DC level is fixed.
Fig 28. TDA8296 calculated DAC characteristic
I
FS
DAC current
(1) I
(2) I
(3) I
=
[mA]
1.216 V
----------------------------- -
45
35
25
15
V_IOUTP
V_IOUTP
V_IOUTP
5
R
0
RSET
Digital global standard low IF demodulator for analog TV and FM radio
RSET
All information provided in this document is subject to legal disclaimers.
for R
for R
for R
RSET
RSET
RSET
×
10
1
-- -
5
Rev. 1 — 3 March 2011
×
= 1 kΩ
= 1.5 kΩ
= 2 kΩ
64
------------------------------------- -
+
20
B_DA_V/S
48
Figure 29
Table
30
50, for B_DA_S see
×
64
and
Figure
40
30. The full scale DAC current
50
Table
FS
DAC reg (dec)
in function of the bias
51.
60
(1)
(2)
(3)
TDA8296
001aam357
© NXP B.V. 2011. All rights reserved.
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