CXA1843Q Datasheet, PDF (1/20 Pages) Sony Corporation – High-Speed Sample-and-Hold IC

CXA1843Q
High-Speed Sample-and-Hold IC
For the availability of this product, please contact the sales office.
Description
The CXA1843Q is a bipolar IC designed to sample-
and-hold video and various other signals with high
32 pin QFP (PIastic)
speed. It is ideal for video and other signal
conversions.
Features
• Maximum operating rate = 33MHz (min.)
• Low power consumption: 320mW
• S/H clock pulse generator circuit
• Built-in clock pulse generator for A/D converter
Applications
When used in combination of the CXA1844Q, the
CXA1843Q achieves A/D conversion.
Structure
Bipolar silicon monolithic IC
Block Diagram and Pin Configuration
Absolute Maximum Ratings (Ta = 25°C)
• Supply voltage VCC
7
V
VEE
–7
V
• Input voltage
(VIN pin)
VIN
VEE to AVCC + 0.3 V
(REFIN pin) VREFIN +1 to AVCC + 0.3 V
(CLKIN pin) VCLK GND – 0.5 to DVCC + 0.3 V
(REX 2, 3, 4 pins) VREX2, 3, 4 GND to GND + 4 V
• Reference voltage
(REFFB pin) VREFFB
VEE to +3
V
(REFOUT pin) VREFOUT VEE to AVCC + 0.3 V
• Output current
(REFFOUT pin) IREFOUT
–1 to +1
mA
(SHOUT pin) ISHOUT
–12 to +12
mA
(CLKOUT pin) IADC
–1.5 to +1.5 mA
• Storage temperature
Tstg
–65 to +150
°C
• Allowable power dissipation
PD
1.1
W
NC 25
DVEE1 26
REX3 27
REX4 28
DVEE2 29
24 23 22 21 20 19 18 17
A/D CONVERTER
PULSE
GENERATOR
SAMPLE HOLD
PULSE
GENERATOR
REF DC 16 NC
SHIFT
15 REFFB
14 REFOUT
13 AVEE3
12 AVCC3
DVCC3 30
CLK IN 31
NC 32
SAMPLE
HOLD
11 SHOUT
10 AVEE2
9 NC
12 3456 78
Operating Conditions
• Supply voltage VCC
4.75 to 5.25
V
VEE
–4.75 to –5.25
V
• Operating temperature
Topr
–20 to +75
°C
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.
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