DS87C550 Datasheet, PDF (36/50 Pages) Dallas Semiconductor – EPROM High-Speed Micro with A/D and PWM

A/D CONVERTER ELECTRICAL
CHARACTERISTICS
PARAMETER
SYMBOL
Analog Supply Voltage
Analog Supply Current
Analog Idle Mode Current
Analog Power-Down Mode
Current
Analog Input Voltage
Internal Reference
External Reference
External Analog Reference
Voltage
Internal Reference Voltage
Change with Temperature
Change with AV _CC
A_VCC
A_VSS
AI_DD
AI_DDI
AI_DDPD
ADC7-
ADC0
A_VREF-
A_VREF+
V_BG
V_BGT
V_BGV
MIN
V_CC
GND
0
A_VREF-
AV_SS-0.2
2.4375
Analog Input Capacitance
A/D Clock
Sampling Time
Conversion Time
Resolution
Differential non-linearity
Integral non-linearity
Offset Error
Gain Error
Cross-talk between A/D
inputs
C_IN
t_ACLK
t_ADS
t_ADC
E_DL
E_IL
E_OS
E_G
E_CT
1
5 t_ACLK
16 t_ACLK
DS87C550
(@ V_CC = 5V ± 10%, 0-70ºC)
TYP MAX UNITS NOTES
V_CC
V
GND
1
mA
TBD
µA
300
nA
2.50
V
A_VREF+
AV_CC +
V
0.2
2.50 2.5625
V
± 50
PPM/°
± 10
C
mV/V
10
15
PF
6.25
us
2
t_ACLK
t_ACLK
3
10
Bits
±1.0
LSB
±2.0
LSB
±2.0
LSB
±1.0
%
-60
dB
NOTES FOR A/D CONVERTER ELECTRICAL CHARACTERISTICS
1. The following condition must not be exceeded: GND-0.2V < AV _SS < V_CC + 0.2V.
2. Due to the dynamic nature of the A/D converter, t_ACLK has both min and max specifications.
3. A complete conversion cycle requires 16 ACLK periods, including five input sampling periods.
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