TMC2246AKEC2 Fairchild Semiconductor, TMC2246AKEC2 Datasheet - Page 11

• Manufacturer Part Number: TMC2246AKEC2
• Description: Video ICs Image Filter
• Manufacturer: Fairchild Semiconductor
• Type: Digital Half Band Filtersr

Specifications of TMC2246AKEC2

• Operating Supply Voltage: - 0.5 V to + 7 V
• Supply Current: 170 mA
• Maximum Operating Temperature: 70 C
• Package / Case: MQFP-120
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TMC2246A
Table 2. Typical TMC2246A Operation Sequence
Notice in this example, operating in fractional two’s complement mode, that rounding is imposed on the first cycle only of an
accumulation. This avoids the propagation of accumulated roundoff errors.
REV. 1.0.3 9/11/00
CLK
0
1
2
3
4
5
6
7
8
D1(1) C1(1)
D1(2)
D1(3) C1(3)
D1(4) C1(4)
D1
-
C1
X
-
ENB1
0
1
0
0
-
D2(1) C2(1)
D2(2) C2(2)
D2(3) C2(3)
D2(4) C2(4)
D2
-
C2
-
ENB2
0
1
0
0
-
D3(1) C3(1)
D3(2)
D3(3)
D3(4) C3(4)
D3
-
C3
X
X
-
ENB3
0
1
1
0
-
D4(1) C4(1)
D4(2)
D4(3)
D4(4) C4(4)
D4
-
C4
X
X
-
ENB4 ACC
0
1
1
0
-
0
1
1
0
-
S(6)=S(5)+D1(2)C1(1)+D2(2)C2(1)
S(7)=S(6)+D1(3)C1(3)+D2(3)C2(3)
+D3(4)C3(4)+D4(4)C4(4)+2 -10
+D3(1)C3(1)+D4(1)C4(1)+ 2
S(5)=D1(1)C1(1)+D2(1)C2(1)
S(8)=D1(4)C1(4)+D2(4)C2(4)
+D3(2)C3(1)+D4(2)C4(1)
+D3(3)C3(1)+D4(3)C4(1)
PRODUCT SPECIFICATION
Sum
-
-
-
-10
11