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PDF CXA3276Q Data sheet ( Hoja de datos )
| Número de pieza | CXA3276Q | |
| Descripción | 8-bit 160MSPS Flash A/D Converter | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA3276Q
8-bit 160MSPS Flash A/D Converter
Description
The CXA3276Q is an 8-bit high-speed flash A/D
converter capable of digitizing analog signals at the
maximum rate of 160MSPS. 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.
48 pin QFP (Plastic)
Features
• Differential linearity error: ±0.5LSB or less
• Integral linearity error: ±0.5LSB or less
• Maximum conversion rate of 160MSPS
• Low input capacitance: 10pF
• Wide analog input bandwidth: 250MHz
• Low power consumption: 550mW
• 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.)
• +3.3V line CMOS IC direct connecting available
• Single +5V power supply operation available
• Surface mounting package (48-pin QFP)
LEAD TREATMENT: PALLADIUM PLATING
Structure
Bipolar silicon monolithic IC
Applications
• LCD monitors
• LCD projectors
Pin Configuration (Top View)
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
N.C. 16
45 SELECT
N.C. 17
44 INV
N.C. 18
43 CLKOUT
DVCC2 19
42 DVCC2
DGND2 20
41 DGND2
PAD0 21
40 PBD7
PAD1 22
39 PBD6
PAD2 23
38 PBD5
PAD3 24
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–
E98773-PS
1 page  
Pin Description and I/O Pin Equivalent Circuit
Pin Symbol I/O Standard
No. voltage level
Equivalent circuit
3, 10 AGND
GND
5, 8 AVCC
20, 29 DGND1
32, 41 DGND2
19, 30 DVCC1
31, 42 DVCC2
12 DGND3
1 DVEE3
16, 17,
18
N.C.
13 CLK/E
+5V
(typ.)
GND
+5V
(typ.)
+5V (typ.)
(With a
single
power
supply)
GND
(With dual
power
supply)
GND
(With a
single
power
supply)
–5V (typ.)
(With dual
power
supply)
I
14 CLKN/E I
ECL/
PECL
48 RESETN/E I
47 RESET/E I
DGND3
13 48
14 47
DVEE3
–5–
CXA3276Q
Description
Analog ground.
Separated from the digital ground.
Analog power supply.
Separated from the digital power
supply.
Digital ground.
Digital power supply.
Digital power supply.
Ground for ECL input.
+5V for PECL and TTL inputs.
Digital power supply.
–5V for ECL input.
Ground for PECL and TTL inputs.
No connected pin.
Not connected with the internal
circuits.
Clock input.
CLK/E complementary input.
When left open, this pin goes to the
threshold voltage.
Only CLK/E can be used for
operation, but complementary inputs
are recommended to attain fast and
stable operation.
Reset signal input.
When set to low level, the built-in
CLK frequency divider circuit can be
reset.
RESETN/E complementary input.
When left open, this pin goes to the
threshold voltage. Only RESETN/E
can be used for operation.
5 Page 
CXA3276Q
Electrical Characteristics Measurement Circuit
Current Consumption Measurement Circuit
5V 5V
A Icc
A IEE
Sampling Delay Measurement Circuit
Aperture Jitter Measurement Circuit
100MHz
OSC1
φ: Variable
Amp
4V VRT
AVCC
DVCC1
DVCC2
DGND3
fr
VIN 8 Logic
CXA3276Q
Analiyzer
CLK
1.95V
VIN
CLK/E
5MHz PECL
OSC2
1024
samples
2V VRB
DGND2
DGND1
AGND
DVEE3
100MHz
ECL
Buffer
Integral Linearity Error Measurement Circuit
Differential Linearity Error Measurement Circuit
+V
S2
S1: ON when A < B
S1 S2: ON when A > B
Aperture Jitter Measurement Method
VIN
CLK
VRT
VRM2
VRB
VIN
DVM
8
CXA3276Q
–V
A<B A>B
Comparator
A8 B8 8
to to
A1 B1
A0 B0
“0” “1”
Controller
Buffer
000 ··· 00
to
111 ··· 10
Error Rate Measurement Circuit
∆υ 129
∆ t 128 σ (LSB)
VIN 127
126
125
CLK Sampling timing fluctuation
(= aperture jitter)
Where σ (LSB) is the deviation of the output codes when
the largest slew rate point is sampled at the clock which
has exactly the same frequency as the analog input
signal, the aperture jitter Taj is:
Taj = σ/
∆υ
∆t
= σ/ ( 256
2
× 2πf )
Signal
Source
VIN
Fc
N
– 1kHz
2Vp-p Sin Wave
CXA3276Q
8
Latch
CLK CLK
A
Comparator
B A>B
+ Latch
Pulse
Counter
Signal
Source
Fc
16LSB
1/N
– 11 –
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet CXA3276Q.PDF ] | |
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