Sony CXD2306Q Datasheet
—1—
E92X12D01
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage AVDD, DVDD 7V
• Input voltage (All pins)
VIN VDD + 0.5 to VSS – 0.5 V
• Output voltage
IOUT 0 to 15 mA
• Storage temperature
Tstg –55 to +150 °C
Recommended Operating Conditions
• Supply voltage AVDD, AVSS 5.0 ± 0.25 V
DVDD, DVSS 5.0 ± 0.25 V
• Reference input voltage
VREF 0.5 to 2.0 V
• Clock pulse width
tPW1, tPW0 5.6 (min.) ns
• Operating temperature
topr –20 to +85 °C
Description
The CXD2306Q is a 1-ch 10-bit 80MSPS D/A
converter for fine monitor and video, and is ideal for
high definition TVs and high resolution displays.
Features
• 10-bit resolution
• Maximum conversion rate 80MSPS
• Differential linearity error ±0.5 LSB
• Low power consumption 150 mW(max.)
(When 80MSPS 200 Ω load, 2 Vp-p is output)
• Single 5 V power supply
• Built-in independent constant-voltage source
• Stand-by function
Structure
Silicon gate CMOS IC
10-bit 80MSPS 1ch D/A Converter
32 pin QFP (Plastic)
CXD2306Q
For the availability of this product, please contact the sales office.
—2—
CXD2306Q
Block Diagram and Pin Configuration
Pin Configuration
17
18
19
20
21
22
23
24
25
CURRENT CELLS
(FOR FULL SCALE)
4LSB'S
CURRENT
CELLS
6MSB'S
CURRENT
CELLS
BIAS VOLTAGE
GENERATOR
BAND GAP
REFERENCE
CLOCK
GENERATOR
DECODER
DECODER
LACHES
2
3
4
5
6
7
9
10
11
13
14
27
28
30
31
32
1
15
(LSB) D0
D1
D2
D3
D4
D5
D6
D7
D8
(MSB) D9
DV
DD
BLK
DV
DD
DVSS
DVSS
CLK
VB
CE
IO
AV
SS
IO
VG
AVDD
AVDD
SREF
IREF
VREF
AV
DD
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
27
15
17
25
to
to
NC
DVss
VB
DV
DD
NC
CE
BLK
CLK
AVss
NC
DVss
DV
DD
D0 (LSB)
D1
D2
IO
IO
VG
AV
DD
NC
D3
D4
D5
D6
D7
D8
D9 (MSB)
NC
Digital section
Analog section
IREF
SREF
VREF
—3—
CXD2306Q
Pin Description and Equivalent Circuit
30 to 32
1 to 7
8, 12,16, 26, 29
9
10
11
13, 28
14
15, 27
17
19
22
D0 to D9
NC
CLK
BLK
CE
DVDD
VB
DVSS
IREF
VREF
VG
I
—
I
—
O
—
O
I
O
Pin No. Symbol I/O Equivalent circuit Description
7
30
DVDD
DVSS
to
10
9
DV
DD
DVSS
11
14
DVDD
DVDD
DVSS
19
22
17
AVDD
AVDD
AVDD
AVDD
AVSS
AVSS
AVSS
Digital input.
30 pin D0 (LSB) to 7 pin D9 (MSB)
NC pin
Clock input
Blanking input.
This is synchronized with the clock
input signal.
No signal (0 V output) at high and
output state at low.
Chip enable input.
This is not synchronized with the clock
input signal.
No signal (0 V output) at high makes
power consumption minimum.
Digital power supply
Connect a capacitor of approximately
0.1 µF.
Digital ground
Reference current output.
Connect resistance “RIR” which is 16
times output resistance “R”.
Reference voltage input.
Sets output full scale value.
Connect a capacitor of approximately
0.1 µF.
—4—
CXD2306Q
18
20, 21
23
24
25
SREF
AVDD
IO
IO
AVSS
O
—
O
—
Pin No. Symbol I/O Equivalent circuit Description
18
AVSS
AVSS
AVDD
23
24
AVDD
AVSS
AVDD
AVSS
Independent constant-voltage source
output pin using band gap reference.
Stable voltage independent of the
fluctuation for supply voltage can be
get by connecting to VREF. See
Application Circuit 2 for details.
Analog power supply
Inverted current output.
Connect to GND normally.
Current output. Output can be
retrieved by connecting resistance.
The standard is 200 Ω.
Analog ground
tPW1
tPW0
ts
th
ts
th
ts
th
tPD
tPD
tPD
CLK
DATA
D/A OUT
1.5V
0%
50%
100%
I/O Correspondence Table
(When 2.00 V output full-scale voltage)
MSB LSB
1 1 1 1 1 1 1 1 1 1
:
1 0 0 0 0 0 0 0 0 0
:
0 0 0 0 0 0 0 0 0 0
2.0 V
1.0 V
0 V
Input code
Output
voltage
Description of Operation
Timing Chart
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