ADS7828 Datasheet, PDF (4/17 Pages) Texas Instruments – 12-Bit, 8-Channel Sampling ANALOG-TO-DIGITAL CONVERTER with I2C™ Interface

ELECTRICAL CHARACTERISTICS: +5V (Cont.)
At T_A = –40°C to +85°C, +V_DD = +5.0V, V_REF = External +5.0V, SCL Clock Frequency = 3.4MHz (High-Speed Mode), unless otherwise noted.
PARAMETER
CONDITIONS
ADS7828E
MIN
TYP
MAX
ADS7828EB
MIN
TYP
MAX
DIGITAL INPUT/OUTPUT
Logic Family
CMOS
✻
Logic Levels: V_IH
V_IL
V_OL
Input Leakage: I_IH
I_IL
Data Format
+V_DD • 0.7
+V_DD + 0.5
✻
✻
–0.3
+V_DD • 0.3
✻
✻
Min. 3mA Sink Current
0.4
✻
V_IH = +V_DD +0.5
V_IL = -0.3
10
✻
-10
✻
Straight
✻
Binary
ADS7828 HARDWARE ADDRESS
10010
✻
POWER-SUPPLY REQUIREMENTS
Power-Supply Voltage, +V_DD
Quiescent Current
Specified Performance
4.75
5
5.25
✻
High Speed Mode: SCL = 3.4MHz
750
1000
✻
✻
✻
Fast Mode: SCL = 400kHz
300
✻
Standard Mode, SCL = 100kHz
150
✻
Power Dissipation
High Speed Mode: SCL = 3.4MHz
Fast Mode: SCL = 400kHz
Standard Mode, SCL = 100kHz
3.75
5
1.5
0.75
✻
✻
✻
✻
Power-Down Mode
High Speed Mode: SCL = 3.4MHz
400
✻
w/Wrong Address Selected
Fast Mode: SCL = 400kHz
150
✻
Standard Mode, SCL = 100kHz
35
✻
Full Power-Down
SCL Pulled HIGH, SDA Pulled HIGH
400
3000
✻
✻
TEMPERATURE RANGE
Specified Performance
–40
85
✻
✻
✻ Specifications same as ADS7828E.
NOTES: (1) LSB means Least Significant Bit. With V_REF equal to 5.0V, 1LSB is 1.22mV. (2) THD measured out to the 9th-harmonic.
UNITS
V
V
V
µA
µA
Binary
V
µA
µA
µA
mW
mW
mW
µA
µA
µA
nA
°C
PIN CONFIGURATION
Top View
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
ADS7828
TSSOP
16 +V_DD
15 SDA
14 SCL
13 A1
12 A0
11 COM
10 REF_IN / REF_OUT
9 GND
PIN DESCRIPTIONS
PIN
NAME
DESCRIPTION
1
CH0
Analog Input Channel 0
2
CH1
Analog Input Channel 1
3
CH2
Analog Input Channel 2
4
CH3
Analog Input Channel 3
5
CH4
Analog Input Channel 4
6
CH5
Analog Input Channel 5
7
CH6
Analog Input Channel 6
8
CH7
Analog Input Channel 7
9
GND
Analog Ground
10 REF_IN / REF_OUT Internal +2.5V Reference, External Reference Input
11
COM
Common to Analog Input Channel
12
A0
Slave Address Bit 0
13
A1
Slave Address Bit 1
14
SCL
Serial Clock
15
SDA
Serial Data
16
+V_DD
Power Supply, 3.3V Nominal
TIMING DIAGRAM
SDA
t_BUF
t_LOW
t_R
t_F
SCL
t_{HD; STA}
t_{HD; STA}
STOP START
t_{HD; DAT}
t_HIGH t_{SU; DAT}
t_{SU; STA}
REPEATED
START
t_SP
t_{SU; STO}
4
ADS7828
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SBAS181B