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ADS7828-Q1 Datasheet(PDF) 10 Page - Texas Instruments

Part # ADS7828-Q1
Description  12-Bit 8-Channel Sampling Analog-to-Digital Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADS7828-Q1 Datasheet(HTML) 10 Page - Texas Instruments

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ADS7828-Q1
SBAS456B – DECEMBER 2008 – REVISED JANUARY 2016
www.ti.com
Electrical Characteristics for ADS7828EB (continued)
+VDD = 5 V, VREF = External 5 V, SCL clock frequency = 3.4 MHz (high-speed mode), over operating free-air temperature
range, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Voltage Reference Output
VO
Output voltage
2.475
2.5
2.525
V
Internal reference drift
15
ppm/°C
Internal reference on
110
Ω
zo
Output impedance
Internal reference off
1
G
Ω
IQ
Quiescent current
1300
µA
Voltage Reference Input
rI
Input resistance
1
G
Ω
Current drain
20
µA
Digital Input and Output
VOL
Low-level output voltage
Minimum 3-mA sink current
0.4
V
IIH
High-level input current
VIH = +VDD + 0.5 V
10
µA
IIL
Low-level input current
VIL = –0.3 V
–10
µA
Power Supply
High-speed mode: SCL = 3.4 MHz
750
1000
IQ
Quiescent current
Fast mode: SCL = 400 kHz
300
µA
Standard mode: SCL = 100 kHz
150
High-speed mode: SCL = 3.4 MHz
3.75
5
PO
Power dissipation
Fast mode: SCL = 400 kHz
1.5
µW
Standard mode: SCL = 100 kHz
0.75
High-speed mode: SCL = 3.4 MHz
400
Power-down current with wrong
Fast mode: SCL = 400 kHz
150
µA
address selected
Standard mode: SCL = 100 kHz
35
IPD
Full power-down current
SCL pulled high, SDA pulled high
400
3000
nA
6.9 Switching Characteristics
+VDD = 2.7 V, over operating free-air temperature range, unless otherwise noted.
(1) (2) See Figure 1.
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Standard mode
100
kHz
Fast mode
400
fSCL
SCL clock frequency
Cb = 100 pF max
3.4
High-speed mode
MHz
Cb = 400 pF max
1.7
Standard mode
4.7
Bus free time between Stop and
tBUF
μs
Start conditions
Fast mode
1.3
Standard mode
4
μs
tHD; STA
Hold time (repeated) Start condition
Fast mode
600
ns
High-speed mode
160
Standard mode
4.7
μs
Fast mode
1.3
tlow
Low period of the SCL clock
Cb = 100 pF max
160
High-speed mode(3)
ns
Cb = 400 pF max
320
(1)
All values referred to VIH(MIN) and VIL(MAX) levels.
(2)
Not production tested, except for the perameter tHD; DAT, data hold time, high-speed mode, Cb = 100 pF max.
(3)
For bus line loads (CB) between 100 pF and 400 pF, the timing parameters must be linearly interpolated.
10
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Product Folder Links: ADS7828-Q1


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