
CXA3256R
8-bit 120MSPS Flash A/D Converter
Description
The CXA3256R is an 8-bit high-speed flash A/D
converter capable of digitizing analog signals at the
maximum rate of 120MSPS. ECL, PECL or TTL can
be selected as the digital input level in accordance
with the application. The TTL digital output level
allows 1:2 demultiplexed output.
The CXA3256R is easier to be used by adding the
new functions to the CXA3246Q and adopting a
ultra-small package.
Features
Differential linearity error: ±0.5LSB or less
Integral linearity error: ±0.5LSB or less
High-speed operation with a maximum conversion
rate of 120MSPS
Low input capacitance: 10pF
Wide analog input bandwidth: 250MHz
Low power consumption: 500mW
Power saving function
1:2 demultiplexed output
1/2 frequency-divided clock output
(with reset function)
Compatible with ECL, PECL and TTL digital input
levels
TTL output "H" levels: 2.8V (Typ.)
Output voltage control function (VOCLP)
+3.3V line CMOS IC direct connecting available
Single +5V power supply operation available
Ultra-small surface mounting package (48-pin LQFP)
Pin Configuration
(Top View)
Structure
Bipolar silicon monolithic IC
Applications
Magnetic recording (PRML)
Communications (QPSK, QAM)
LCDs
Digital oscilloscopes
– 1 –
E98305A8X-PS
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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.
CLK/E
SELECT2
CLK/T
VOCLP
PS
DV
CC
2
DGND2
PAD0
PAD1
PAD2
PAD3
CLKN/E
P
P
P
D
D
C
1
D
C
2
D
P
P
P
P
P
RESETN/E
RESET/E
SELECT1
RESETN/T
INV
CLKOUT
DV
CC
2
DGND2
PBD7
PBD6
PBD5
PBD4
D
E
3
V
R
1
A
A
C
V
I
V
R
2
A
C
V
R
3
A
V
R
D
V
R
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30
40
39
38
37
36
35
34
31 32 33
41
42
43
44
45
46
47
48
2
3
4
5
6
7
8
9
10
11
12
1
48 pin LQFP (Plastic)
LEAD TREATMENT: PALLADIUM PLATING