TMS320DM6441_17 Datasheet, PDF (184/236 Pages) Texas Instruments – Digital Media System-on-Chip

TMS320DM6441
SPRS359E – SEPTEMBER 2006 – REVISED AUGUST 2010
6.13.2.4 DAC Electrical Data/Timing
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Table 6-64. Switching Characteristics Over Recommended Operating Conditions for DAC Static
Specifications (see Figure 6-54)
NO.
PARAMETER
DC Accuracy
Integral Non-Linearity (INL)
Differential Non-Linearity (DNL)
Analog Output
Offset Error
Gain Error
Full-Scale Output Voltage
Output Capacitance
Reference
Reference Voltage Range (V_REF)
Full-Scale Current Adjust Resistor (RBIAS)
TEST CONDITIONS
R_LOAD = 500 Ω
1.05 V and 1.2 V
MIN
TYP
-1.0
-0.5
0.5
5
500
200
0.475
0.5
3.8
4.0
MAX
1.0
0.5
UNIT
LSB
LSB
LSB
%F_S
mV_PP
pF
0.525 V
4.2 kΩ
Table 6-65. Switching Characteristics Over Recommended Operating Conditions for DAC Dynamic
Specifications (see Figure 6-54)
NO.
PARAMETER
Output Update Rate (F_CLK)
Signal Bandwidth
SFDR to Nyquist
SFDR within Bandwidth
PSRR Over Temp vs Power Supply
TEST CONDITIONS
F_CLK = 27 MHz
F_OUT = 2.0 MHz
F_CLK = 60 MHz
F_OUT = 2.0 MHz
F_CLK = 27 MHz
F_OUT = 2.0 MHz
F_CLK = 60 MHz
F_OUT = 2.0 MHz
1.05 V and 1.2 V
MIN
TYP
27
6
60
60
60
60
50
MAX
60
UNIT
MHz
MHz
dB
dB
db
dB
dB
The DM6441's analog video DAC outputs are designed to drive a 500-Ω load. Figure 6-54 describes a
typical circuit that will permit connecting the analog video output from the DM6441 device to standard
75-Ω impedance video systems. Another solution is to use a Video Amplifier with an integrated filter to
provide a complete solution to the typical output circuit shown in Figure 6-54.
DAC
Low-Pass Filter
I_OUT
f_c = 6.5 MHz
~R_LOAD = 500 Ω
Amplifier
Gain = 5.6 V/V
75 Ω
75 Ω
Figure 6-54. Typical Output Circuit for NTSC/PAL Video From DACs
184 Peripheral and Electrical Specifications
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