Datasheet

ADS7823
3
SBAS180B
DIGITAL INPUT/OUTPUT
Logic Family CMOS
Logic Levels: V
IH
+V
DD
• 0.7 +V
DD
+ 0.5 ✻✻V
V
IL
–0.3 +V
DD
• 0.3 ✻✻V
V
OL
At min 3mA Sink Current 0.4 V
Input Leakage: I
IH
V
IH
= +V
DD
+0.5 10 µA
I
IL
V
IL
= -0.3 -10 µA
Data Format Straight
Binary
ADS7823 HARDWARE ADDRESS 10010 Binary
POWER SUPPLY REQUIREMENTS
Power Supply Voltage, +V
DD
Specified Performance 2.7 3.6 ✻✻V
Quiescent Current High Speed Mode: SCL = 3.4MHz 250 370 ✻✻ µA
Fast Mode: SCL = 400kHz 137 µA
Standard Mode, SCL = 100kHz 109 µA
Power Dissipation High Speed Mode: SCL = 3.4MHz 680 1000 ✻✻ µW
Fast Mode: SCL = 400kHz 370 µW
Standard Mode, SCL = 100kHz 290 µW
Powerdown Mode High Speed Mode: SCL = 3.4MHz 60 µA
w/Wrong Address Selected Fast Mode: SCL = 400kHz 23 µA
Standard Mode, SCL = 100kHz 5.4 µA
Full Powerdown SCL Pulled HIGH, SDA Pulled HIGH 2 3000 ✻✻ nA
TEMPERATURE RANGE
Specified Performance –40 85 ✻✻°C
Specifications same as ADS7823E.
NOTES: (1) LSB means Least Significant Bit. With V
REF
equal to 2.5V, 1LSB is 610µV. (2) THD measured out to the 9th-harmonic.
ELECTRICAL CHARACTERISTICS: +2.7V (Cont.)
At T
A
= –40°C to +85°C, +V
DD
= +2.7V, V
REF
= +2.5V, SCL Clock Frequency = 3.4MHz (High Speed Mode) unless otherwise noted.
ADS7823E ADS7823EB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
RESOLUTION 12 Bits
ANALOG INPUT
Full-Scale Input Range 0 V
REF
✻✻V
Input Capacitance 25 pF
Input Leakage Current ±1 µA
SYSTEM PERFORMANCE
No Missing Codes 12 Bits
Integral Linearity Error ±1.0 ±2 ±0.5 ±1LSB
(1)
Differential Linearity Error –0.5, +1.0 –1, +3 ±0.5 LSB
Offset Error ±1.0 ±4 ±0.75 ±3 LSB
Gain Error ±1.0 ±4 ±0.75 ±3 LSB
Noise 33 µVrms
Power Supply Rejection 82 dB
SAMPLING DYNAMICS
Throughput Frequency High Speed Mode: SCL = 3.4MHz 50 kHz
Fast Mode: SCL = 400kHz 8 kHz
Standard Mode, SCL = 100kHz 2 kHz
Conversion Time 8 µs
AC ACCURACY
Total Harmonic Distortion V
IN
= 2.5V
PP
at 10kHz –82 dB
(2)
Signal-to-Ratio V
IN
= 2.5V
PP
at 10kHz 72 dB
Signal-to-(Noise+Distortion) Ratio V
IN
= 2.5V
PP
at 10kHz 71 dB
Spurious Free Dynamic Range V
IN
= 2.5V
PP
at 10kHz 86 dB
VOLTAGE REFERENCE INPUT
Range 0.05 V
DD
✻✻V
Resistance All Modes 1.0 G
Current Drain At Code 800H, HS Mode: SCL = 3.4MHz 20 µA
ELECTRICAL CHARACTERISTICS: +5V
At T
A
= –40°C to +85°C, +V
DD
= +5.0V, V
REF
= +5.0V, SCL Clock Frequency = 3.4MHz (High Speed Mode) unless otherwise noted.
ADS7823E ADS7823EB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS