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ADC12181EVAL PDF даташит

Спецификация ADC12181EVAL изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «12-Bit/ 5 MHz Self-Calibrating/ Pipelined A/D Converter».

Детали детали

Номер произв ADC12181EVAL
Описание 12-Bit/ 5 MHz Self-Calibrating/ Pipelined A/D Converter
Производители National Semiconductor
логотип National Semiconductor логотип 

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ADC12181EVAL Даташит, Описание, Даташиты
March 2000
ADC12081
12-Bit, 5 MHz Self-Calibrating, Pipelined A/D Converter
with Internal Sample & Hold
General Description
The ADC12081 is a monolithic CMOS analog-to-digital con-
verter capable of converting analog input signals into 12-bit
digital words at 5 megasamples per second (MSPS). The
ADC12081 utilizes an innovative pipeline architecture to
minimize die size and power consumption. The ADC12081
uses self-calibration and error correction to maintain accu-
racy and performance over temperature.
The ADC12081 converter operates on a 5V power supply
and can digitize analog input signals in the range of 0 to 2V.
A single convert clock controls the conversion operation. All
digital I/O is TTL compatible.
The ADC12081 is designed to minimize external compo-
nents necessary for the analog input interface. An internal
sample-and-hold circuit samples the analog input and an in-
ternal amplifier buffers the reference voltage input.
The ADC12081 is available in the 32-lead TQFP package
and is designed to operate over the extended commercial
temperature range of -40˚C to +85˚C.
Features
n Single 5V power supply
n Simple analog input interface
n Internal Sample-and-hold
n Internal Reference buffer amplifier
n Low power consumption
Key Specifications
n Resolution
n Conversion Rate
n DNL
n SNR
n ENOB
n Analog Input Range
n Supply Voltage
n Power Consumption, 5 MHz
Applications
n Image processing front end
n PC-based data acquisition
n Scanners
n Fax machines
n Waveform digitizer
12 Bits
5 Msps (min)
±0.35 LSB (typ)
68 dB (typ)
10.9 Bits (typ)
2 Vpp (min)
+5V ±5%
105 mW (typ)
Connection Diagram
TRI-STATE® is a registered trademark of National Semiconductor Corporation. CN
© 2000 National Semiconductor Corporation DS100150
DS100150-1
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ADC12181EVAL Даташит, Описание, Даташиты
Ordering Information
Industrial
(−40˚C TA +85˚C)
ADC12081CIVT
ADC12181 EVAL
Package
32 pin TQFP
Evaluation Board
Simplified Block Diagram
DS100150-2
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ADC12181EVAL Даташит, Описание, Даташиты
Pin Descriptions and Equivalent Circuits #2
No. Symbol
2 VIN
1 VREF
Equivalent Circuit
Description
Analog signal input. With a 2.0V reference voltage,
input signal voltages in the range of 0 to 2.0 Volts
will be converted. See section 1.2.
Reference voltage input. This pin should be driven
from an accurate, stable reference source in the
range of 1.8 to 2.2V and bypassed to a low-noise
analog ground with a monolithic ceramic capacitor,
nominally 0.01µF. See section 1.1.
32 VRP
Positive reference bypass pin. Bypass with a 0.1µF
capacitor. Do not connect anything else to this pin.
See section 3.1
31 VRM
Reference midpoint bypass pin. Bypass with a
0.1µF capacitor. Do not connect anything else to
this pin. See section 3.1
30 VRN
10 CLOCK
8 CAL
7 PD
11 OE
Negative reverence bypass pin. Bypass with a
0.1µF capacitor. Do not connect anything else to
this pin. See section 3.1
Sample Clock input, TTL compatible. Maximum
amplitude should not exceed 3V.
Calibration request, active High. Calibration cycle
starts when CAL returns to logic low. CAL is ignored
during power-down mode. See section 2.2.
Power-down, active High, ignored during calibration
cycle. See paragraph 2.4
Output enable control, active low. When this pin is
high the data outputs are in Tri-state
(high-impedance) mode.
28 OR
29 READY
14-19,
22-27
D0 - D11
Over range indicator. This pin is at a logic High for
VIN < 0 or for VIN > VREF.
Device ready indicator, active High. This pin is at a
logic Low during a calibration cycle and while the
device is in the power down mode.
Digital output word, CMOS compatible. D0 (pin 14)
is LSB, D11 (pin 27) is MSB. Load with no more
than 50pF.
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Номер в каталогеОписаниеПроизводители
ADC12181EVAL12-Bit/ 10 MHz Self-Calibrating/ Pipelined A/D Converter with Internal Sample & HoldNational Semiconductor
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ADC12181EVAL12-Bit/ 5 MHz Self-Calibrating/ Pipelined A/D ConverterNational Semiconductor
National Semiconductor
ADC12181EVAL12-Bit/ 10 MHz Self-Calibrating/ Pipelined A/D Converter with Internal Sample & HoldNational Semiconductor
National Semiconductor

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