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Sony Semiconductor Electronic Components Datasheet

CXA3256R Datasheet

8-bit 120MSPS Flash A/D Converter

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CXA3256R pdf
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)
48 pin LQFP (Plastic)
LEAD TREATMENT: PALLADIUM PLATING
Structure
Bipolar silicon monolithic IC
Applications
Magnetic recording (PRML)
Communications (QPSK, QAM)
LCDs
Digital oscilloscopes
12 11 10 9 8 7 6 5 4 3 2 1
CLK/E 13
48 RESETN/E
CLKN/E 14
47 RESET/E
CLK/T 15
46 RESETN/T
SELECT2 16
45 SELECT1
VOCLP 17
PS 18
DVCC2 19
DGND2 20
PAD0 21
PAD1 22
PAD2 23
PAD3 24
44 INV
43 CLKOUT
42 DVCC2
41 DGND2
40 PBD7
39 PBD6
38 PBD5
37 PBD4
25 26 27 28 29 30 31 32 33 34 35 36
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.
–1–
E98305A8X-PS


Sony Semiconductor Electronic Components Datasheet

CXA3256R Datasheet

8-bit 120MSPS Flash A/D Converter

No Preview Available !

CXA3256R pdf
CXA3256R
Absolute Maximum Ratings (Ta = 25°C)
Unit
Supply voltage
AVCC, DVCC1, DVCC2
–0.5 to +7.0
V
DGND3
–0.5 to +7.0
V
DVEE3
–7.0 to +0.5
V
DGND3 – DVEE3
–0.5 to +7.0
V
Analog input voltage
VIN
VRT – 2.7 to AVCC
V
Reference input voltage VRT
2.7 to AVCC
V
VRB
VIN – 2.7 to AVCC
V
|VRT – VRB|
2.5 V
Digital input voltage
ECL/PECL input pin DVEE3 – 0.5 to DGND3 + 0.5
V
TTL input pin
DGND1 – 0.5 to DVCC1 + 0.5
V
SELECT2 pin
DGND1 – 0.5 to DVCC1 + 0.5
V
VOCLP pin
DGND1 – 0.5 to DVCC1 + 0.5
VID1 (|∗∗∗/E – ∗∗∗N/E|)
2.7
V
V
Storage temperature
Tstg
–65 to +150
°C
Allowable power dissipation PD
1.4 W
(when mounted on a two-layer glass fabric base epoxy board with dimentions of 50mm × 50mm, 1.6mm thick)
Recommended Operating Conditions
With a single power supply With dual power supply Unit
Min. Typ. Max. Min.
Typ. Max.
Supply voltage
DVCC1, DVCC2, AVCC
+4.75 +5.0 +5.25 +4.75 +5.0 +5.25 V
DGND1, DGND2, AGND –0.05 0 +0.05 –0.05
0 +0.05 V
DGND3
+4.75 +5.0 +5.25 –0.05
0 +0.05 V
DVEE3
–0.05 0 +0.05 –5.5 –5.0 –4.75 V
Analog input voltage VIN
VRB
VRT
VRB
VRT V
Reference input voltage VRT
+2.9 +4.1 +2.9
+4.1 V
VRB
+1.4 +2.6 +1.4
+2.6 V
|VRT – VRB|
1.5 2.1 1.5
2.1 V
Digital input voltage ECL/PECL input pin : VIH DVEE3 + 1.5
DGND3 DVEE3 + 1.5
DGND3 V
: VIL DVEE3 + 1.1
VIH – 0.4 DVEE3 + 1.1
VIH – 0.4 V
TTL input pin
: VIH 2.0
2.0
V
: VIL
0.8
0.8 V
SELECT2 pin
: VIH
DVCC1
DVCC1
V
: VIL DGND1
DGND1
V
VOCLP pin
DGND1 + 2.4
VID1 (|∗∗∗/E – ∗∗∗N/E|) 0.4
0.8
DVCC1 DGND1 + 2.4
0.4 0.8
DVCC1 V
V
Maximum conversion rate Fc (Straight mode)
100
100 MSPS
(DMUX mode)
120
120 MSPS
Ambient temperature Ta
–20 +75 –20
+75 °C
1 VID: Input Voltage Differential
ECL and PECL switching level
VID
–2–
DGND3
VIH (max.)
VIL
VTH (DGND3 – 1.2V)
VIH
VIL (min.)


Part Number CXA3256R
Description 8-bit 120MSPS Flash A/D Converter
Maker Sony Corporation
Total Page 23 Pages
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