aduc7062 Analog Devices, Inc., aduc7062 Datasheet - Page 30
aduc7062
Manufacturer Part Number
aduc7062
Description
Low-power, Precision Analog Microcontroller, Dual ?-? Adcs, Flash/ee, Arm7tdmi
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADUC7062.pdf
(100 pages)
- Current page: 30 of 100
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ADuC7060/ADuC7061/ADuC7062
ADC CIRCUIT INFORMATION
The ADuC706x incorporates two independent multichannel
Σ-Δ ADCs. The primary ADC is a 24-bit, 5-channel ADC. The
auxiliary ADC is a 16-bit Σ-Δ ADC, with up to eight input
channels.
The primary ADC input has a mux and a programmable gain
amplifier on its input stage. The mux on the primary channel
can be configured as two fully differential input channels or five
single-ended input channels.
The auxiliary ADC incorporates a buffer on its input stage.
Digital filtering is present on both ADCs which allows
GND_SW
IEXC0
IEXC1
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
50Ω
AGND
CHOP
MUX
REFERENCE
INTERNAL
TEMPERATURE
AVDD
SENSOR
50µA O/C
DETECT
CHOP
MUX
0.2mA TO 1mA
BUF
VREF+
EXT_REF2IN+
EXT_REF2IN−
BUF
PGA
AVDD
Figure 9. Analog Block Diagram
VREF–
Rev. PrA | Page 30 of 100
MODULATOR
MODULATOR
Σ-Δ
Σ-Δ
measurement of a wide dynamic range and low frequency
signals such as those in pressure sensor, temperature sensor,
weigh-scale, or strain-gauge type applications.
The ADuC706x auxiliary ADC can be configured as four fully
differential input channels or as eight single-ended input
channels.
Because of internal buffering, the internal channels can convert
signals directly from sensors without the need for external
signal conditioning.
PROGRAMMABLE
PROGRAMMABLE
ACCUMULATOR
INTEGRATOR
OVERRANGE
FILTER
FILTER
DAC
0.2Hz TO 8kHz
0.5Hz TO 8kHz
Preliminary Technical Data
DAC0
COMPARATORS
AND CONTROL
CONVERSION
INTERFACE
COUNTER
TO ARM
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