ADUC7122 Analog Devices, ADUC7122 Datasheet - Page 6

• Manufacturer Part Number: ADUC7122
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI® MCU
• Manufacturer: Analog Devices

Specifications of ADUC7122

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 13

ADuC7122
Parameter
ON-CHIP VOLTAGE REFERENCE
EXTERNAL REFERENCE INPUT
BUF_VREF1, BUF_VREF2 OUTPUTS
DAC CHANNEL SPECIFICATIONS
PSRR
OFFSET DRIFT
GAIN ERROR DRIFT
SHORT-CIRCUIT CURRENT
ANALOG OUTPUTS
DAC AC CHARACTERISTICS
TEMPERATURE SENSOR
POWER SUPPLY MONITOR (PSM)
POWER-ON RESET
WATCHDOG TIMER (WDT)
Accuracy
Reference Temperature Coefficient
Load Current
Output Voltage
Accuracy
Reference Temperature Coefficient
Power Supply Rejection Ratio
Output Impedance
Internal V
Input Voltage Range
DC Accuracy
DC
1 kHz
10 kHz
100 kHz
Output Range
Slew Rate
Voltage Output Settling Time
Digital-to-Analog Glitch Energy
Voltage Output at 25°C
Voltage TC
Accuracy
IOV
Power Supply Trip Point Accuracy
Timeout Period
Resolution
Relative Accuracy
Differential Nonlinearity
Calculated Offset Error
Actual Offset Error
Gain Error
Gain Error Mismatch
Settling Time
4
DD
Trip Point Selection
7
REF
4
Power-On Time
9
8
4
10
4
Min
1.2
−59
−57
−47
−19
0.1
0
Typ
2.5
10
61
10
1
±5
40
12
±2
±0.2
±2
9
±0.15
0.1
10
−61
20
2.49
10
±20
707
−1.25
±3
2.79
3.07
±2.5
2.36
Rev. 0 | Page 6 of 96
±1
Max
±5
30
AV
1.2
±0.8
10
10
V
0.1
512
REF
DD
/AV
DD
−
Unit
V
mV
ppm/°C
dB
Ω
ms
V
mV
μV/°C
mA
Bits
LSB
LSB
mV
mV
%
%
μs
dB
dB
dB
dB
μV/°C
μV/°C
mA
V
V/μs
μs
nV-sec
mV
mV/°C
°C
V
V
%
V
sec
Test Conditions/Comments
0.47 μF from V
T
T
T
R
Buffered
Guaranteed monotonic
2.5 V internal reference
Measured at Code 0
% of full scale on DAC0
Buffered
Buffer on
1 LSB change at major carry (where maximum
number of bits simultaneously change in the
DACxDAT register)
MCU in power-down or standby mode before
measurement
Two selectable trip points
Of the selected nominal trip point voltage
A
A
A
L
= 5 kΩ, C
= 25°C
= 25°C
= 25°C
L
= 100 pF
REF
to AGND