ADS7828_14 Datasheet, PDF (3/23 Pages) Texas Instruments – 12-Bit, 8-Channel Sampling ANALOG-TO-DIGITAL CONVERTER with I2C™ Interface

ELECTRICAL CHARACTERISTICS: +2.7V
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.
ADS7828E
ADS7828EB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
ANALOG INPUT
Full-Scale Input Scan
Absolute Input Range
Capacitance
Leakage Current
SYSTEM PERFORMANCE
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
Power-Supply Rejection
SAMPLING DYNAMICS
Throughput Frequency
Conversion Time
AC ACCURACY
Total Harmonic Distortion
Signal-to-Ratio
Signal-to-(Noise+Distortion) Ratio
Spurious-Free Dynamic Range
Isolation Channel-to-Channel
VOLTAGE REFERENCE OUTPUT
Range
Internal Reference Drift
Output Impedance
Quiescent Current
VOLTAGE REFERENCE INPUT
Range
Resistance
Current Drain
DIGITAL INPUT/OUTPUT
Logic Family
Logic Levels: V_IH
V_IL
V_OL
Input Leakage: I_IH
I_IL
Data Format
ADS7828 HARDWARE ADDRESS
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage, +V_DD
Quiescent Current
Power Dissipation
Power-Down Mode
w/Wrong Address Selected
Full Power-Down
TEMPERATURE RANGE
Specified Performance
Positive Input - Negative Input
Positive Input
Negative Input
0
V_REF
0
–0.2
+V_DD + 0.2 –0.2
–0.2
+0.2
–0.2
25
±1
V_REF
+V_DD + 0.2
+0.2
25
±1
12
±1.0
±2
±1.0
±1.0
±3
±0.2
±1
±1.0
±4
±0.2
±1
33
82
12
±0.5
±1
±0.5
–1, +2
±0.75
±2
±0.2
±1
±0.75
±3
±0.2
±1
33
82
High Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
50
8
2
6
50
8
2
6
V_IN = 2.5V_PP at 10kHz
–82
–82
V_IN = 2.5V_PP at 10kHz
72
72
V_IN = 2.5V_PP at 10kHz
71
71
V_IN = 2.5V_PP at 10kHz
86
86
120
120
2.475
2.5
15
Internal Reference ON
110
Internal Reference OFF
1
Int. Ref. ON, SCL and SDA pulled HIGH
850
2.525
2.475
2.5
2.525
15
110
1
850
0.05
1
High Speed Mode: SCL= 3.4MHz
20
V_DD
0.05
V_DD
1
20
Min. 3mA Sink Current
V_IH = +V_DD +0.5
V_IL = -0.3
+V_DD • 0.7
–0.3
CMOS
–10
Straight
Binary
10010
+V_DD + 0.5
+V_DD • 0.3
0.4
10
+V_DD • 0.7
–0.3
–10
CMOS
+V_DD + 0.5
+V_DD • 0.3
0.4
10
Straight
Binary
10010
Specified Performance
2.7
3.6
2.7
3.6
High Speed Mode: SCL = 3.4MHz
225
320
225
320
Fast Mode: SCL = 400kHz
100
100
Standard Mode, SCL = 100kHz
60
60
High Speed Mode: SCL = 3.4MHz
675
1000
675
1000
Fast Mode: SCL = 400kHz
300
300
Standard Mode, SCL = 100kHz
180
180
High Speed Mode: SCL = 3.4MHz
70
70
Fast Mode: SCL = 400kHz
25
25
Standard Mode, SCL = 100kHz
6
6
SCL Pulled HIGH, SDA Pulled HIGH
400
3000
400
3000
–40
85
–40
85
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.
UNITS
V
V
V
pF
µA
Bits
LSB ⁽¹⁾
LSB
LSB
LSB
LSB
LSB
µVRMS
dB
kHz
kHz
µs
dB ⁽²⁾
dB
dB
dB
dB
V
ppm/°C
Ω
GΩ
µA
V
GΩ
µA
V
V
V
µA
µA
Binary
V
µA
µA
µA
µW
µW
µW
µA
µA
µA
nA
°C
ADS7828
3
SBAS181C
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