ADC12048CIV
器件描述：12-Bit Plus Sign 216 kHz 8-Channel Sampling Analog-to-Digital Converter
器件厂商：NSC [National Semiconductor]
文件大小：635.64KB，共30页
Sponsor by e络盟器件资料摘要：
ADC12048
12-Bit Plus Sign 216 kHz 8-Channel Sampling
Analog-to-Digital Converter
General Description
Operating from a single 5V power supply, the ADC12048 is a
12 bit + sign, parallel I/O, self-calibrating, sampling
analog-to-digital converter (ADC) with an eight input fully dif-
ferential analog multiplexer. The maximum sampling rate is
216 kHz. On request, the ADC goes through a
self-calibration process that adjusts linearity, zero and
full-scale errors.
The ADC12048’s 8-channel multiplexer is software program-
mable to operate in a variety of combinations of
single-ended, differential, or pseudo-differential modes. The
fully differential MUX and the 12-bit + sign ADC allows for the
difference between two signals to be digitized.
The ADC12048 can be configured to work with many popular
microprocessors/microcontrollers and DSPs including Na-
tional’s HPC family, Intel386 and 8051, TMS320C25, Mo-
torola MC68HC11/16, Hitachi 64180 and Analog Devices
ADSP21xx.
For complementary voltage references see the LM4040,
LM4041 or LM9140.
Features
n 8-channel programmable Differential or Single-Ended
multiplexer
n Programmable Acquisition Times and user-controllable
Throughput Rates
n Programmable data bus width (8/13 bits)
n Built-in Sample-and-Hold
n Programmable Auto-Calibration and Auto-Zero cycles
n Low power standby mode
n No missing codes
Key Specifications
(f
CLK
= 12 MHz)
n Resolution 12-bits + sign
n 13-bit conversion time 3.6 µs, max
n 13-bit throughput rate 216 ksamples/s, min
n Integral Linearity Error (ILE) ±1 LSB, max
n Single Supply +5V ±10%
n V
IN
Range GND to V
A
+
n Power consumption
— Normal operation 34 mW, max
— Stand-by mode 75 µw, max
Applications
n Medical instrumentation
n Process control systems
n Test equipment
n Data logging
n Inertial guidance
Block Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS012387-1
April 2000
ADC12048
12-Bit
Plus
Sign
216
kHz
8-Channel
Sampling
Analog-to-Digital
Converter
© 2000 National Semiconductor Corporation DS012387 www.national.com
12-Bit Plus Sign 216 kHz 8-Channel Sampling
Analog-to-Digital Converter
General Description
Operating from a single 5V power supply, the ADC12048 is a
12 bit + sign, parallel I/O, self-calibrating, sampling
analog-to-digital converter (ADC) with an eight input fully dif-
ferential analog multiplexer. The maximum sampling rate is
216 kHz. On request, the ADC goes through a
self-calibration process that adjusts linearity, zero and
full-scale errors.
The ADC12048’s 8-channel multiplexer is software program-
mable to operate in a variety of combinations of
single-ended, differential, or pseudo-differential modes. The
fully differential MUX and the 12-bit + sign ADC allows for the
difference between two signals to be digitized.
The ADC12048 can be configured to work with many popular
microprocessors/microcontrollers and DSPs including Na-
tional’s HPC family, Intel386 and 8051, TMS320C25, Mo-
torola MC68HC11/16, Hitachi 64180 and Analog Devices
ADSP21xx.
For complementary voltage references see the LM4040,
LM4041 or LM9140.
Features
n 8-channel programmable Differential or Single-Ended
multiplexer
n Programmable Acquisition Times and user-controllable
Throughput Rates
n Programmable data bus width (8/13 bits)
n Built-in Sample-and-Hold
n Programmable Auto-Calibration and Auto-Zero cycles
n Low power standby mode
n No missing codes
Key Specifications
(f
CLK
= 12 MHz)
n Resolution 12-bits + sign
n 13-bit conversion time 3.6 µs, max
n 13-bit throughput rate 216 ksamples/s, min
n Integral Linearity Error (ILE) ±1 LSB, max
n Single Supply +5V ±10%
n V
IN
Range GND to V
A
+
n Power consumption
— Normal operation 34 mW, max
— Stand-by mode 75 µw, max
Applications
n Medical instrumentation
n Process control systems
n Test equipment
n Data logging
n Inertial guidance
Block Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS012387-1
April 2000
ADC12048
12-Bit
Plus
Sign
216
kHz
8-Channel
Sampling
Analog-to-Digital
Converter
© 2000 National Semiconductor Corporation DS012387 www.national.com