Specifications

185
3706C–MICRO–2/11
AT89LP3240/6440
26.12 DADC Characteristics
The values shown in these tables are valid for T
A
= -40°C to 85°C and V
DD
= 2.4 to 3.6V, unless otherwise noted.
.
Table 26-9. ADC Characteristics
Symbol Parameter Condition Min Typical Max Units
Resolution 10 Bits
Absolute Accuracy (including
INL, DNL, quantization error,
gain and offset error)
4LSB
Integral Non-Linearity (INL) 4 LSB
DIfferential Non-Linearity
(DNL)
4LSB
Gain Error 16 LSB
Offset Error 16 LSB
t
ACK
Clock Period 500 ns
t
ADC
Conversion Time 13t
ACK
14t
ACK
+
2t
CLCL
ns
V
REF
Reference Voltage
External Reference V
DD
/2 - 0.2 V
DD
/2 V
DD
/2 + 0.2 V
Internal Reference 0.9 1.0 1.1 V
V
IN
Single-Ended Input Voltage V
DD
/2 - V
REF
V
DD
/2 + V
REF
V
V
CMI
Differential Input Common
Mode Volta ge
GND V
DD
V
V
DI
Differential Input Voltage 0 ±V
REF
V
R
IN
Analog Input Resistance 10 kΩ
R
MUX
Analog Mux Resistance 10 kΩ
C
S/H
Sample & Hold Capacitance 3 pF
Table 26-10. DAC Characteristics
Symbol Parameter Condition Min Typical Max Units
Resolution 10 Bits
t
ACK
Clock Period t
ACK
≥ t
CLCL
500 ns
t
DAC
Conversion Time 11t
ACK
12t
ACK
+
2t
CLCL
ns
V
REF
Reference Voltage
External Reference V
DD
/2 - 0.2 V
DD
/2 V
DD
/2 + 0.2 V
Internal Reference 0.9 1.0 1.1 V
V
IN
Single-Ended Input Voltage V
DD
/2 - V
REF
V
DD
/2 + V
REF
V
V
CMO
Differential Output
Common Mode Voltage
V
DD
/2 - 0.2 V
DD
/2 V
DD
/2 + 0.2 V
V
DO
Differential Output Voltage 0 ±V
REF
V
R
OUT
Analog Output Resistance 100 200 kΩ