adc08062ciwm National Semiconductor Corporation, adc08062ciwm Datasheet - Page 10

• Manufacturer Part Number: adc08062ciwm
• Description: 500 Ns A/d Converter With S/h Function And Input Multiplexer
• Manufacturer: National Semiconductor Corporation

www.national.com
Timing Diagrams
Typical Performance Characteristics
t
Supply Current
vs Temperature
Application Information
1.0 FUNCTIONAL DESCRIPTION
The
analog-to-digital conversion using a multi-step flash tech-
nique. The first flash generates the five most significant bits
(MSBs) and the second flash generates the three least sig-
nificant bits (LSBs). Figure 6 shows the major functional
blocks of the ADC08061/2’s multi-step flash converter. It
CRD
vs Temperature
FIGURE 5. RD Mode (Pipeline Operation) (Mode Pin is Low and t
ADC08061
and
ADC08062
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(Continued)
perform
Linearity Error vs
Reference Voltage
Logic Threshold
vs Temperature
an
8-bit
10
consists of an over-encoded 2
ternal DAC with two different voltage spans, a 3-bit half-flash
converter and a comparator multiplexer.
The resistor string near the center of the block diagram in
Figure 6 forms the internal main DAC. Each of the eight re-
sistors at the bottom of the string is equal to 1/256 of the total
string resistance. These resistors form the LSB Ladder and
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RDW
must be between 200 ns and 400 ns)
Offset Error vs
Reference Voltage
Output Current
vs Temperature
1
⁄
2
-bit Voltage Estimator, an in-
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