ELECTRICAL CHARACTERISTICS: +2.7V
At TA = –40°C to +85°C, +VDD = +2.7V, VREF = +2.5V, SCL Clock Frequency = 3.4MHz (High-Speed Mode), unless otherwise noted.
ADS7830E
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Scan
Absolute Input Range
Positive Input - Negative Input
Positive Input
0
–0.2
–0.2
VREF
+VDD + 0.2
+0.2
V
V
V
Negative Input
Capacitance
Leakage Current
25
±1
pF
µA
SYSTEM PERFORMANCE
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
8
Bits
LSB(1)
LSB
LSB
LSB
LSB
LSB
µVRMS
dB
±0.1
±0.1
+0.5
±0.05
±0.1
±0.05
100
±0.5
±0.5
+1
±0.25
±0.5
±0.25
Power-Supply Rejection
72
SAMPLING DYNAMICS
Throughput Frequency
High-Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
70
10
2.5
kSPS(2)
kSPS
kSPS
µs
Conversion Time
5
AC ACCURACY
Total Harmonic Distortion
Signal-to-Ratio
Signal-to-(Noise+Distortion) Ratio
Spurious-Free Dynamic Range
Isolation Channel-to-Channel
VIN = 2.5VPP at 1kHz
VIN = 2.5VPP at 1kHz
–72
50
49
68
90
dB(3)
dB
dB
dB
dB
V
IN = 2.5VPP at 1kHz
VIN = 2.5VPP at 1kHz
VOLTAGE REFERENCE OUTPUT
Range
Internal Reference Drift
Output Impedance
2.475
0.05
2.5
15
110
1
2.525
V
ppm/°C
Ω
GΩ
µA
Internal Reference ON
Internal Reference OFF
Internal Reference ON, SCL and SDA pulled HIGH
Quiescent Current
850
VOLTAGE REFERENCE INPUT
Range
VDD
V
Resistance
Current Drain
1
20
GΩ
µA
High-Speed Mode: SCL= 3.4MHz
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
Logic Levels: VIH
+VDD • 0.7
–0.3
+VDD + 0.5
+VDD • 0.3
0.4
V
V
V
µA
µA
VIL
VOL
Minimum 3mA Sink Current
VIH = +VDD +0.5
Input Leakage: IIH
IIL
10
VIL = -0.3
-10
Data Format
Straight
Binary
ADS7830 HARDWARE ADDRESS
10010
Binary
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage, +VDD
Quiescent Current
Specified Performance
High-Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
High-Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
High-Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
SCL Pulled HIGH, SDA Pulled HIGH
2.7
3.6
320
V
225
100
60
675
300
180
70
25
6
400
µA
µA
µA
µW
µW
µW
µA
µA
µA
nA
Power Dissipation
1000
Power-Down Mode
w/Wrong Address Selected
Full Power-Down
3000
85
TEMPERATURE RANGE
Specified Performance
–40
°C
NOTES: (1) LSB means least significant bit. When VREF = 2.5V, 1LSB is 9.8mV. (2) kSPS means kilo samples-per-second. (3) THD measured out to the 9th-harmonic.
ADS7830
3
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SBAS302
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