Intersil Corporation HI1260 Datasheet
August 1997
Semiconductor
NOT RECOMMENDED FOR NEW DESIGNS
See HI1178
HI1260
Triple 8-Bit, 35 MSPS, RGB,
3-Channel D/A Converter
Features
• Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . .Triple 8-Bit
• Maximum Conversion Speed . . . . . . . . . . . . . . . 35MHz
• RGB 3-Channel Input/Output
• Differential Linearity Error . . . . . . . . . . . . . . . ±0.5 LSB
• Digital Input Voltage . . . . . . . . . . . . . . . . . . . .TTL Level
• Output Voltage Full Scale (Typ) . . . . . . . . . . . . . . 1V
P-P
• Low Power Consumption (Typ) . . . . . . . . . . . . .360mW
• Direct Replacement for Sony CXA1260
Applications
• Digital TV
• Graphics Display
• High Resolution Color Graphics
• Video Reconstruction
• Instrumentation
• Image Processing
• I/Q Modulation
Pinout
(MQFP)
TOP VIEW
Description
The HI1260 is a triple 8-bit, high-speed, bipolar D/A
converter designed for video band use. It has three separate, 8-bit pixel inputs, one each for red, green, and blue
video data. A single 5.0V power supply and pixel clock input
is all that is required to make the device operational. A bias
voltage generator is internal. For lower CMOS power
consumption, refer to the HI1178.
Ordering Information
PART
NUMBER
HI1260JCQ -20 to 75 48 Ld MQFP Q48.12 x 12-S
HI1260
TEMP.
RANGE (oC) PACKAGE PKG. NO.
R8
R7
NC
G1
G2
G3
G4
G5
G6
G7
G8
B1
B2
B3
B4
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1997
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16
B5
B6
B7
R6
B8
R5
NC
DGND
CLK
10-1
R4
R3
CC
DV
DGND
R2
NC
NC
R1
NC
373839404142434445464748
2423222120191817
AGND
DGND
36
35
34
33
32
31
30
29
28
27
26
25
SET
V
NC
NC
NC
ROUT
NC
GOUT
NC
BOUT
NC
AV
NC
V
CC
REF
File Number 4112.1
Functional Block Diagram
R1
39
R2
40
R3
41
R4
R5
R6
R7
R8
G1
G2
G3
G4
G5
G6
G7
G8
B1
B2
B3
B4
B5
B6
B7
B8
42
44
45
46
47
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
INPUT
BUFFER
(R)
INPUT
BUFFER
(G)
INPUT
BUFFER
(B)
HI1260
DGND
37
DECODER
23
6
DECODER
23
6
CLOCK SYNCHRONIZING CIRCUIT
DECODER
23
6
CLOCK
BUFFER
3
6
3
6
3
6
CURRENT
SWITCH
(R)
CURRENT
SWITCH
(G)
CURRENT
SWITCH
(B)
+
-
R
R
2R
R
2R
R
2R
R
2R
R
2R
R
R
R
2R
R
2R
R
2R
R
2R
R
2R
R
R
R
2R
R
2R
R
2R
R
2R
R
2R
R
REFERENCE
R
R
R
INTERNAL
VOLTAGE
SOURCE
R
33
OUT
G
31
OUT
B
29
OUT
AV
27
CC
18
CLOCK
DV
CC
A
GND
10-2
25242320
V
SET
V
REF
HI1260
Pin Descriptions
NUMBER SYMBOL EQUIVALENT CIRCUIT DESCRIPTION
1 to 16
39 to 42
44 to 47
R1 to R8
G1 to G8
B1 to B8
DV
CC
20
Digital Input pin. From pins 39 to 42
and from 44 to 47 are for RED. R1 is
MSB and R8 is LSB. From pins 1 to 8
are for GREEN. G1 is MSB and G8 is
LSB. From pins 9 to 16 are for BLUE.
B1 is MSB and B8 is LSB.
39 - 42
44 - 47
1 - 16
37
DGND
18 CLK Clock Input pin.
20 DV
17
CC
NC Vacant pin (no connection).
DV
CC
20
18
37
DGND
Digital VCC.
21 to 22
23 AGND Analog GND.
24 V
25 V
SET
REF
AV
27
24
23
CC
AV
CC
27
25
23
AGND
54K
20p
Bias Input pin. Normally, apply 0.87V.
See “Note on use.”
Internal Reference V oltage Out pin, 1.2V
(Typ). A pull-down resistor is necessar y
externally. See “Notes on use.”
10-3
HI1260
Pin Descriptions
(Continued)
NUMBER SYMBOL EQUIVALENT CIRCUIT DESCRIPTION
26 NC Vacant pin (no connection).
27 AV
CC
Analog VCC.
28 NC Vacant pin but connect to AV
(Note 1).
29 B
OUT
AV
CC
27
29
23
AGND
R
O
Analog Output pin for BLUE.
30 NC Vacant pin but connect to AV
(Note 1).
31 G
OUT
AV
CC
27
R
O
31
Analog Output pin for GREEN.
CC
CC
23
AGND
32 NC Vacant pin but connect to AV
CC
(Note 1).
33 R
OUT
AV
CC
27
33
23
AGND
R
O
34 To 36 NC Vacant pin but connect to AV
Analog Output pin for RED.
CC
(Note 1).
19, 37, 43 DGND Digital GND.
48 NC Vacant pin (no connection).
NOTE:
1. Pins 30, 32, 34 and 36 are vacant, but in order to reduce interference between the individual RGB outputs, connect them to AVCC.
10-4
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