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參數(shù)資料
型號： TLV2556MPWREP
廠商： TEXAS INSTRUMENTS INC
元件分類： ADC
英文描述： 11-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁數(shù)： 33/37頁
文件大?。?/td> 705K
代理商： TLV2556MPWREP
ELECTRICAL CHARACTERISTICS
www.ti.com ................................................................................................................................................... SLAS598A – NOVEMBER 2008 – REVISED JULY 2009
over recommended operating free-air temperature range, VREF+ = 5 V,
SCLK frequency = 15 MHz when VCC = 5 V, VREF+ = 2.5 V,
SCLK frequency = 10 MHz when VCC = 2.7 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP(1)
MAX
UNIT
VCC = 4.5 V, IOH = –1.6 mA
2.4
VCC = 2.7 V, IOH = –0.2 mA
VOH
High-level output voltage
30 pF
V
VCC = 4.5 V, IOH = –20 A
VCC – 0.1
VCC = 2.7 V, IOH = –20 A
VCC = 5.5 V, IOL = 1.6 mA
0.4
VCC = 3.6 V, IOL = 0.8 mA
VOH
Low-level output voltage
30 pF
V
VCC = 5.5 V, IOL = –20 A
0.1
VCC = 3.6 V, IOL = –20 A
VO = VCC, CS = VCC
1
2.5
IOZ
High impedance off state output current
A
VO = 0 V, CS = VCC
–1
–2.5
VCC = 5 V
1.2
CS at 0 V, External reference
VCC = 2.7 V
0.9
ICC
Operating supply current
mA
VCC = 5 V
3
CS at 0 V, Internal reference
VCC = 2.7 V
2.4
External
0.1
10
For all digital inputs,
reference
ICC(SP
Software power down current
0 V
≤ VI ≤ 0.5 V or
A
D)
Internal
VI ≥ VCC – 0.5 V, SCLK = 0 V
0.1
10
reference
External
0.1
10
For all digital inputs,
reference
ICC(AP
Auto power down current
0 V
≤ VI ≤ 0.5 V or
A
D)
Internal
VI ≥ VCC – 0.5 V, SCLK = 0 V
1800
reference
IIH
High-level input current
VI = VCC
0.005
2.5
A
IIL
Low-level input current
VI = 0 V
–0.005
–2.5
A
Selected channel at VCC ,
1
Unselected channel at 0 V
Ilkg
Selected channel leakage current
A
Selected channel at 0 V,
–1
Unselected channel at VCC
VCC = 4.5 V to 5.5 V
3.0
f(OSC)
Internal oscillator frequency
MHz
VCC = 2.7 V to 3.6 V
2.1
VCC = 4.5 V to 5.5 V
4.53
tconv
Conversion time = 13.5 × f(OSC) + 25 ns
s
VCC = 2.7 V to 3.6 V
6.46
Internal oscillator frequency
3.9
V
switch-over voltage
VCC = 4.5 V
600
Zi
Analog input MUX impedance(2)
VCC = 2.7 V
500
Analog inputs
45
Ci
Input capacitance
pF
Control inputs
5
(1)
All typical values are at VCC = 5 V, TA = 25°C.
(2)
The switch resistance is very nonlinear and varies with input voltage and supply voltage.
Copyright 2008–2009, Texas Instruments Incorporated
5
Product Folder Link(s): TLV2556-EP
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