TMC2242AR2C1 Fairchild Semiconductor, TMC2242AR2C1 Datasheet - Page 11

• Manufacturer Part Number: TMC2242AR2C1
• Description: Video ICs Interp/Decim Filter Digital HB 12B/16B
• Manufacturer: Fairchild Semiconductor
• Type: Digital Half Band Filtersr

Specifications of TMC2242AR2C1

• Operating Supply Voltage: - 0.5 V to + 7 V
• Supply Current: 195 mA
• Maximum Operating Temperature: 70 C
• Package / Case: PLCC-44
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TMC2242A/TMC2242B
Timing Diagrams
Applications Discussion
The TMC2242A and TMC2242B are well-suited for filtering
digitized composite NTSC or PAL video. In Figure 10, the
TMC1175A 8-bit video A/D converter outputs, D
connected to the TMC2242B inputs, SI
(grounding SI
9-bit rounded decimated output on SO
Note: Data buses are unsigned binarys; TMC2242 input is two’s complement.
Composite
14.318 MHz (NTSC D2)
12
75 Ohm
Video
13.500 MHz (D1)
MSB
65-2242A-12
11 LSB
3-0
28.636 MHz (NTSC D2)
). The RND
300 pF
27.000 MHz (D1)
2 uH
TTL Clock
SI 11
SI 10-0
TCO=1 INT=DEC=0
Figure 10. Decimating Oversampled Video With a Low Cost 8-bit A/D
510 pF
TMC2242B
Figure 11. Interpolating Digital Video Signals before Reconstruction
2-0
(continued)
2 uH
300 pF
Three-State
Outputs
OE
Figure 9. Threshold Levels for Three State Measurements
controls are set to 111 for a
SO 14-6
SO 15
15-7
11-4
75 Ohm
28.636 MHz (NTSC D2)
.
27.000 MHz (D1)
, respectively
9
VIN
7-0
t
DIS
, are
AGND
TMC1175A
8-bit A/D
D 9
D 8-0
0.5V
0.5V
TMC3003
10-bit D/A
High Impedance
28.636 MHz (NTSC D2)
In Figure 11, the TMC2242B drives a fast D/A converter to
reconstruct analog composite video. The TMC3003 10-bit
digital-to-analog converter inputs, D
TMC2242B outputs SO
RND
tion operation.
D 6-0
27.000 MHz (D1)
D 7
AGND
2-0
7
I OUT
controls are set to 110 for rounded 10-bit interpola-
t
ENA
75 Ohm
SI 11
SI 10-4
DEC=0
TCO=INT=1
65-2242A-11
2.0V
0.8V
TMC2242B
15-6
28.636 MHz (NTSC D2)
300 pF
27.000 MHz (D1)
2 uH
, respectively. The TMC2242B
510 pF
TTL Clock
SO 14-7
14.318 MHz (NTSC D2)
SO 15
PRODUCT SPECIFICATION
9-0
13.500 MHz (D1)
2 uH
300 pF
are connected to the
MSB
8
65-2242A-13
Composite
9
75 Ohm
Video
11