Datasheet

ADuC7128/ADuC7129
Rev. 0 | Page 5 of 92
Parameter Min Typ Max Unit Test Conditions/Comments
Relative Accuracy ±2 LSB
Differential Nonlinearity, +VE 0.35 LSB
Differential Nonlinearity, −VE −0.15 LSB
Offset Error −190 mV
Gain Error +150 mV
Voltage Output Settling Time
to 0.1%
5 s
Line Driver Output
As measured into a range of specified loads
(see
Figure 2) at LD1TX and LD2TX, unless
otherwise noted
Total Harmonic Distortion −52 dB PLM operating at 691.2 kHz
Output Voltage Swing ±1.768 V rms
COMMON MODE
AC Mode 1.65 V
Each output has a common mode of 0.5 V × AV
DD
and swings 0.5 V × V
REF
above and below this;
V
REF
is the internal 2.5 V reference
DC Mode 1.5 V
Each output has a common mode of 0.5 V × V
REF
and swings 0.6 V × V
REF
above and below this;
V
REF
is the internal 2.5 V reference
DIFFERENTIAL INPUT IMPEDANCE 11 13 kΩ Line driver buffer disabled
Leakage Current LD1TX, LD2TX 7 A Line driver buffer disabled
Short-Circuit Current ±50 mA No protection diodes, max allowable current
Line Driver Tx Power-Up Time 20 µs
COMPARATOR
Input Offset Voltage ±15 mV
Input Bias Current 1 µA
Input Voltage Range AGND AV
DD
− 1.2 V
Input Capacitance 7 pF
Hysteresis
3, 5
2 15 mV
Hysteresis can be turned on or off via the
CMPHYST bit in the CMPCON register
Response Time 1 µs
Response time can be modified via the CMPRES
bits in the CMPCON register
TEMPERATURE SENSOR
Voltage Output at 25°C 780 mV
Voltage Temperature Coefficient −1.3 mV/°C
Accuracy ±3 °C
POWER SUPPLY MONITOR (PSM)
IOV
DD
Trip Point Selection 2.79 V Two selectable trip points
3.07 V
Power Supply Trip Point Accuracy ±2.5 % Of the selected nominal trip point voltage
GLITCH IMMUNITY ON RST PIN
3
50 µs
WATCHDOG TIMER (WDT )
Timeout Period 0 ms
512 sec
FLASH/EE MEMORY
7, 8
Endurance 10,000 Cycles
Data Retention 20 Years T
J
= 85°C
DIGITAL INPUTS All digital inputs, including XCLKI and XCLKO
Logic 1 Input Current (Leakage
Current)
±0.2 ±1 µA V
INH
= V
DD
or V
INH
= 5 V
Logic 0 Input Current (Leakage
Current)
−40 −65 A V
INL
= 0 V, except TDI
−80 +125 µA V
INL
= 0 V, TDI Only
Input Capacitance 15 pF