ADuC845 Datasheet PDF - Analog Devices
| Part Number | ADuC845 | |
| Description | 24-/16-Bit ADCs | |
| Manufacturers | Analog Devices | |
| Logo |  |
|
|
There is a preview and ADuC845 download ( pdf file ) link at the bottom of this page. Total 30 Pages | ||
Preview 1 page No Preview Available !
Data Sheet
FEATURES
High resolution Σ-Δ ADCs
2 independent 24-bit ADCs on the ADuC845
Single 24-bit ADC on the ADuC847 and
single 16-bit ADC on the ADuC848
Up to 10 ADC input channels on all parts
24-bit no missing codes
22-bit rms (19.5 bit p-p) effective resolution
Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled
Memory
62-kbyte on-chip Flash/EE program memory
4-kbyte on-chip Flash/EE data memory
Flash/EE, 100-year retention, 100 kcycle endurance
3 levels of Flash/EE program memory security
In-circuit serial download (no external hardware)
High speed user download (5 sec)
2304 bytes on-chip data RAM
8051-based core
8051-compatible instruction set
High performance single-cycle core
32 kHz external crystal
On-chip programmable PLL (12.58 MHz max)
3 × 16-bit timer/counter
24 programmable I/O lines, plus 8 analog or
digital input lines
11 interrupt sources, two priority levels
Dual data pointer, extended 11-bit stack pointer
On-chip peripherals
Internal power-on reset circuit
12-bit voltage output DAC
Dual 16-bit Σ-Δ DACs
On-chip temperature sensor (ADuC845 only)
Dual excitation current sources (200 µA)
Time interval counter (wake-up/RTC timer)
UART, SPI®, and I2C® serial I/O
High speed dedicated baud rate generator (incl. 115,200)
Watchdog timer (WDT)
Power supply monitor (PSM)
MicroConverter® Multichannel
24-/16-Bit ADCs with Embedded 62 kB
Flash and Single-Cycle MCU
ADuC845/ADuC847/ADuC848
Power
Normal: 4.8 mA max @ 3.6 V (core CLK = 1.57 MHz)
Power-down: 20 µA max with wake-up timer running
Specified for 3 V and 5 V operation
Package and temperature range:
52-lead MQFP (14 mm × 14 mm), −40°C to +125°C
56-lead LFCSP (8 mm × 8 mm), −40°C to +85°C
APPLICATIONS
Multichannel sensor monitoring
Industrial/environmental instrumentation
Weigh scales, pressure sensors, temperature monitoring
Portable instrumentation, battery-powered systems
Data logging, precision system monitoring
AIN1
AIN10
AINCOM
REFIN2+
REFIN2–
REFIN–
REFIN+
RESET
DVDD
DGND
FUNCTIONAL BLOCK DIAGRAM
AVCO
ADuC845
AVDD
CURRENT
SOURCE
MUX
BUF
PGA
PRIMARY
24-BIT S-D ADC
12-BIT
DAC
BUF
AGND
TEMP
SENSOR
AUXILIARY
24-BIT S-D ADC
DUAL 16-BIT
S-D DAC
DUAL 16-BIT
PWM
MUX
IEXC1
IEXC2
DAC
PWM0
PWM1
EXTERNAL
VREF
DETECT
INTERNAL
BAND GAP
VREF
SINGLE-CYCLE 8061-BASED MCU
POR
OSC
PLL AND PRG
CLOCK DIV
WAKE-UP/
RTC TIMER
62 kBYTES FLASH/EE PROGRAM MEMORY
4 kBYTES FLASH/EE DATA MEMORY
2304 BYTES USER RAM
3 × 16 BIT TIMERS
BAUD RATE TIMER
POWER SUPPLY MON
WATCHDOG TIMER
4 × PARALLEL
PORTS
UART, SPI, AND I 2C
SERIAL I/O
XTAL1 XTAL2
Figure 1. ADuC845 Functional Block Diagram
Rev. C
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2004–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
|
| |
 
Data Sheet
ADuC845/ADuC847/ADuC848
Parameter
Normal Mode Rejection 50 Hz/60 Hz2
On AIN
Analog Input Current2
Analog Input Current Drift
Average Input Current
Average Input Current Drift
Absolute AIN Voltage Limits2
Absolute AIN Voltage Limits2
EXTERNAL REFERENCE INPUTS
REFIN(+) to REFIN(–) Voltage
REFIN(+) to REFIN(–) Range2
Average Reference Input Current
Average Reference Input Current
Drift
NOXREF Trigger Voltage
Common-Mode Rejection
DC Rejection
50 Hz/60 Hz Rejection2
Normal Mode Rejection 50 Hz/60 Hz2
AUXILIARY ADC (ADuC845 Only)
Conversion Rate
No Missing Codes2
Resolution
Output Noise
Integral Nonlinearity
Offset Error3
Offset Error Drift2
Full-Scale Error4
Gain Error Drift4
Power Supply Rejection
Footnotes at end of table.
Min Typ
75
100
67
100
AGND +
0.1
AGND −
0.03
1
0.3
±5
±15
±125
±2
2.5
±1
±0.1
Max
±1
±5
AVDD −
0.1
AVDD +
0.03
AVDD
0.65
125
90
75
100
67
100
5.4 105
16.06
1365
24
24
See Table 19 and Table 21
See Table 18 and Table 20
±15
±3
±0.25
10
200
±0.5
±0.5
80
80
Unit
dB
dB
dB
dB
nA
nA
pA/°C
pA/°C
nA/V
pA/V/°C
V
V
V
V
µA/V
nA/V/°C
V
dB
dB
dB
dB
dB
dB
Hz
Hz
Bits
Bits
ppm of FSR
µV
LSB16
nV/°C
nV/°C
LSB16
ppm/°C
dB
dB
Conditions
50 Hz/60 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H,
chop on, REJ60 on
50 Hz ± 1 Hz, 16.6 Hz Fadc, SF = 52H, chop on
50 Hz/60 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H,
chop off, REJ60 on
50 Hz ± 1 Hz, 50 Hz Fadc, SF = 52H, chop off
TMAX = 85°C, buffer on
TMAX = 125°C, buffer on
TMAX = 85°C, buffer on
TMAX = 125°C, buffer on
±2.56 V range, buffer bypassed
Buffer bypassed
AIN1…AIN10 and AINCOM with buffer enabled
AIN1…AIN10 and AINCOM with buffer bypassed
REFIN refers to both REFIN and REFIN2
REFIN refers to both REFIN and REFIN2
Both ADCs enabled
NOXREF (ADCSTAT.4) bit active if VREF > 0.3 V, and
inactive if VREF > 0.65 V
AIN = 1 V, range = ±2.56 V
50 Hz/60 Hz ± 1 Hz, AIN = 1 V,
range = ±2.56 V, SF = 82
50 Hz/60 Hz ±1 Hz, AIN = 1 V, range = ±2.56 V,
SF = 52H, chop on, REJ60 on
50 Hz ± 1 Hz, AIN = 1 V, range = ±2.56 V,
SF = 52H, chop on
50 Hz/60 Hz ± 1 Hz, AIN = 1 V, range = ±2.56 V,
SF = 52H, chop off, REJ60 on
50 Hz ± 1 Hz, AIN = 1 V, range = ±2.56 V,
SF = 52H, chop off
Chop on
Chop off
≤26.7 Hz update rate, chop enabled
80.3 Hz update rate, chop disabled
Output noise varies with selected update rates.
1 LSB16
Chop on
Chop off
Chop on
Chop off
AIN = 1 V, range = ±2.56 V, chop enabled
AIN = 1 V, range = ±2.56 V, chop disabled
Rev. C | Page 5 of 108
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ADuC845 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADuC845.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| ADuC841 | The function is MicroConverter 12-Bit ADCs and DACs. Analog Devices | |
| ADuC842 | The function is MicroConverter 12-Bit ADCs and DACs. Analog Devices | |
| ADuC843 | The function is MicroConverter 12-Bit ADCs and DACs. Analog Devices | |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
ADuC
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||