ADC10064 Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – 10-Bit 600 ns A/D Converter with Input Multiplexer and Sample/Hold

November 2001
ADC10061/ADC10062/ADC10064
10-Bit 600 ns A/D Converter with Input Multiplexer and
Sample/Hold
General Description
Using an innovative, patented multistep* conversion tech-
nique, the 10-bit ADC10061, ADC10062, and ADC10064
CMOS analog-to-digital converters offer sub-microsecond
conversion times yet dissipate a maximum of only 235 mW.
The ADC10061, ADC10062, and ADC10064 perform a
10-bit conversion in two lower-resolution “flashes”, thus
yielding a fast A/D without the cost, power dissipation, and
other problems associated with true flash approaches. The
ADC10061 is pin-compatible with the ADC1061 but much
faster, thus providing a convenient upgrade path for the
ADC1061.
The analog input voltage to the ADC10061, ADC10062, and
ADC10064 is sampled and held by an internal sampling
circuit. Input signals at frequencies from dc to over 200 kHz
can therefore be digitized accurately without the need for an
external sample-and-hold circuit.
The ADC10062 and ADC10064 include a “speed-up” pin.
Connecting an external resistor between this pin and ground
reduces the typical conversion time to as little as 350 ns with
only a small increase in linearity error.
For ease of interface to microprocessors, the ADC10061,
ADC10062, and ADC10064 have been designed to appear
as a memory location or I/O port without the need for exter-
nal interface logic.
*U.S. Patent Number 4918449
Features
n Built-in sample-and-hold
n Single +5V supply
n 1, 2, or 4-input multiplexer options
n No external clock required
n Speed adjust pin for faster conversions (ADC10062
and ADC10064). See ADC10662/4 for high speed
guaranteed performance.
Key Specifications
n Conversion time to 10 bits
600 ns typical,
n
900 ns max over temperature
n Sampling Rate
800 kHz
n Low power dissipation
235 mW (max)
n Total unadjusted error
±1.0 LSB (max)
n No missing codes over temperature
Applications
n Digital signal processor front ends
n Instrumentation
n Disk drives
n Mobile telecommunications
Simplified Block Diagram
*ADC10061 Only
**ADC10062 and ADC10064 Only
***ADC10064 Only
© 2001 National Semiconductor Corporation DS011020
01102001
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