ADUC7121 Analog Devices, ADUC7121 Datasheet - Page 5

• Manufacturer Part Number: ADUC7121
• Description: Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU
• Manufacturer: Analog Devices

Specifications of ADUC7121

• Mcu Core: ARM7 TDMI
• Mcu Speed (mips): 40
• Sram (bytes): 8192Bytes
• Gpio Pins: 32
• Adc # Channels: 9

SPECIFICATIONS
AV
otherwise noted.
Table 1.
Parameter
ADC CHANNEL SPECIFICATIONS
ENDPOINT ERRORS
DYNAMIC PERFORMANCE
ANALOG INPUT
PADC0x INPUT
Resolution
Integral Nonlinearity
Differential Nonlinearity
DC Code Distribution
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Signal-to-Noise Ratio (SNR)
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Channel-to-Channel Crosstalk
Input Voltage Ranges
Leakage Current
Input Capacitance
Full-Scale Input Range
Input Leakage at PADC0x
Resolution
Gain Error
Gain Drift
Offset
Offset Drift
PADC0x Compliant Range
ADC Power-Up Time
DC Accuracy
DD
All Channels Except IDACx
IDACx Channels Only
Differential Mode
Single-Ended Mode
= IOV
Channels
4
4
4
DD
4
= 3.0 V to 3.6 V, PV
1, 2
5
3, 4
4
DD
= 2.0 V ± 5%, V
Min
12
0.15
20
11
0.1
Typ
5
±0.6
±0.5
1
±2
1
±1
±2
±1
69
−78
−75
−80
±0.2
20
20
0.15
3
30
REF
= 2.5 V internal reference, f
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Max
±2
+1.4/−0.99
±5
±5
V
0 to V
AV
±1
1000
2
1
50
6
60
AV
CM
DD
DD
6
± V
− 1.5
− 1.2
REF
REF
/2
Unit
μs
Bits
LSB
LSB
LSB
LSB
% of full
scale
LSB
LSB
LSB
dB
dB
dB
dB
V
V
V
μA
pF
pF
μA
nA
Bits
%
ppm/°C
nA
pA/°C
V
CORE
= 41.78 MHz, T
Test Conditions/Comments
Eight acquisition clocks and f
2.5 V internal reference, not production tested
for PADC0 and PADC1 channels
2.5 V internal reference, guaranteed
monotonic
ADC input is a dc voltage
Internally unbuffered channels
f
internally unbuffered channels
Includes distortion and noise components
Measured on adjacent channels
See Table 38
Buffer bypassed
Buffer enabled
During ADC acquisition buffer bypassed
During ADC acquisition buffer enabled
28.3 kΩ resistor, PGA gain = 3, acquisition
time = 3.2 μs, pseudo differential mode
0.1% accuracy, 5 ppm external resistor for
current to voltage
PGA offset not included
IN
= 10 kHz sine wave, f
A
= −10°C to +95°C, unless
SAMPLE
= 1 MSPS,
ADC
ADuC7121
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