ADC10831
器件描述：10-Bit Plus Sign Serial I/O A/D Converters with MUX, Sample/Hold and Reference
器件厂商：NSC [National Semiconductor]
文件大小：453.15KB，共30页
Sponsor by e络盟器件资料摘要：
TL/H/11391
ADC10831,
ADC10832,
ADC10834,
ADC10838
10-Bit
Plus
Sign
Serial
I/O
A/D
Converters
with
MUX,
Sample/Hold
and
Reference
December 1994
ADC10831, ADC10832, ADC10834, ADC10838
10-Bit Plus Sign Serial I/O A/D Converters
with MUX, Sample/Hold and Reference
General Description
This series of CMOS 10-bit plus sign successive approxima-
tion A/D converters features versatile analog input multi-
plexers, sample/hold and a 2.5V band-gap reference. The
1, 2, 4 or 8-channel multiplexers can be software configured
for single-ended or differential mode of operation.
An input sample/hold is implemented by a capacitive refer-
ence ladder and sampled-data comparator. This allows the
analog input to vary during the A/D conversion cycle.
In the differential mode, valid outputs are obtained even
when the negative inputs are greater than the positive be-
cause of the 10-bit plus sign output data format.
The serial I/O is configured to comply with the NSC
MICROWIRE
TM
serial data exchange standard for easy in-
terface to the COPS
TM
and HPC
TM
families of controllers,
and can easily interface with standard shift registers and
microprocessors.
Applications
Y
Medical instruments
Y
Remote instrumentation
Y
Test equipment
Features
Y b
5V to a5V analog voltage range with g5V supplies
Y
Serial I/O (MICROWIRE compatible)
Y
1, 2, 4, or 8-channel differential or single-ended
multiplexer
Y
Software or hardware power down
Y
Analog input sample/hold function
Y
Ratiometric or Absolute voltage referencing
Y
No zero or full scale adjustment required
Y
No missing codes over temperature
Y
TTL/MOS input/output compatible
Y
Standard DIP and SO packages
Key Specifications
Y
Resolution 10 bits plus sign
Y
Dual supply g5V
Y
Power dissipation 59 mW (Max)
Y
In power down mode 33 mW
Y
Conversion time 5 ms (Max)
Y
Sampling rate 74 kHz (Max)
Y
Band-gap reference 2.5V g2% (Max)
ADC10838 Simplified Block Diagram
TL/H/11391–1
COPSTM, HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.
ADC10831,
ADC10832,
ADC10834,
ADC10838
10-Bit
Plus
Sign
Serial
I/O
A/D
Converters
with
MUX,
Sample/Hold
and
Reference
December 1994
ADC10831, ADC10832, ADC10834, ADC10838
10-Bit Plus Sign Serial I/O A/D Converters
with MUX, Sample/Hold and Reference
General Description
This series of CMOS 10-bit plus sign successive approxima-
tion A/D converters features versatile analog input multi-
plexers, sample/hold and a 2.5V band-gap reference. The
1, 2, 4 or 8-channel multiplexers can be software configured
for single-ended or differential mode of operation.
An input sample/hold is implemented by a capacitive refer-
ence ladder and sampled-data comparator. This allows the
analog input to vary during the A/D conversion cycle.
In the differential mode, valid outputs are obtained even
when the negative inputs are greater than the positive be-
cause of the 10-bit plus sign output data format.
The serial I/O is configured to comply with the NSC
MICROWIRE
TM
serial data exchange standard for easy in-
terface to the COPS
TM
and HPC
TM
families of controllers,
and can easily interface with standard shift registers and
microprocessors.
Applications
Y
Medical instruments
Y
Remote instrumentation
Y
Test equipment
Features
Y b
5V to a5V analog voltage range with g5V supplies
Y
Serial I/O (MICROWIRE compatible)
Y
1, 2, 4, or 8-channel differential or single-ended
multiplexer
Y
Software or hardware power down
Y
Analog input sample/hold function
Y
Ratiometric or Absolute voltage referencing
Y
No zero or full scale adjustment required
Y
No missing codes over temperature
Y
TTL/MOS input/output compatible
Y
Standard DIP and SO packages
Key Specifications
Y
Resolution 10 bits plus sign
Y
Dual supply g5V
Y
Power dissipation 59 mW (Max)
Y
In power down mode 33 mW
Y
Conversion time 5 ms (Max)
Y
Sampling rate 74 kHz (Max)
Y
Band-gap reference 2.5V g2% (Max)
ADC10838 Simplified Block Diagram
TL/H/11391–1
COPSTM, HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.