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參數資料
| 型號： | TLV2556IPWR |
| 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： | 33/37頁 |
| 文件大小： | 729K |
| 代理商： | TLV2556IPWR |
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TLV2556
SLAS355A – DECEMBER 2001 – REVISED SEPTEMBER 2002
5
www.ti.com
electrical characteristics 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
MAX
UNIT
V
High level output voltage
VCC = 4.5 V, IOH = –1.6 mA
VCC = 2.7 V, IOH = –0.2 mA
30 pF
2.4
V
VOH
High-level output voltage
VCC = 4.5 V, IOH = –20 A
VCC = 2.7 V, IOH = –20 A
30 pF
VCC –0.1
V
Low level output voltage
VCC = 5.5 V, IOL = 1.6 mA
VCC = 3.6 V, IOH = 0.8 mA
30 pF
0.4
V
VOL
Low-level output voltage
VCC = 5.5 V, IOL = –20 A
VCC = 3.6 V, IOH = –20 A
30 pF
0.1
V
I
High impedance off state output current
VO = VCC,
CS at VCC
1
2.5
A
IOZ
High-impedance off-state output current
VO = 0 V,
CS at VCC
–1
–2.5
A
CS at 0 V
Ext Ref
VCC = 5 V
1.2
I
Operating supply current
CS at 0 V,
Ext. Ref
VCC = 2.7 V
0.9
mA
ICC
Operating supply current
CS at 0 V
Int Ref
VCC = 5 V
3
mA
CS at 0 V,
Int. Ref
VCC = 2.7 V
2.4
I
Software power down current
For all digital inputs,
0 V
≤ VI ≤ 0.5 V or
Ext. Ref
0.1
1
A
ICC(SPD) Software power-down current
0 V
≤ VI ≤ 0.5 V or
VI ≥ VCC – 0.5 V,
SCLK = 0 V
Int. Ref
0.1
1
A
I
Auto power down current
For all digital inputs,
0 V
≤ VI ≤ 0.5 V or
Ext. Ref
0.1
10
A
ICC(APD) Auto power-down current
0 V
≤ VI ≤ 0.5 V or
VI ≥ VCC – 0.5 V,
SCLK = 0 V
Int. Ref
1800
A
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
I
Selected channel leakage current
Selected channel at VCC , Unselected
channel at 0 V
1
A
Ilkg
Selected channel leakage current
Selected channel at 0 V, Unselected channel
at VCC
–1
A
f
Internal oscillator frequency
VCC = 4.5 V to 5.5 V
3.27
MHz
f(OSC)
Internal oscillator frequency
VCC = 2.7 V to 3.6 V
2.56
MHz
t
Conversion time 13 5
[f
]+25ns
VCC = 4.5 V to 5.5 V
4.15
s
tconv
Conversion time = 13.5
[f(OSC)] + 25 ns
VCC = 2.7 V to 3.6 V
5.54
s
Internal oscillator frequency switch over
voltage
3.6
4.1
V
Z
Analog input MUX impedance
VCC = 4.5 V
600
Zi
Analog input MUX impedance
VCC = 2.7 V
500
C
Input capacitance
Analog inputs
45
55
pF
Ci
Input capacitance
Control inputs
5
15
pF
All typical values are at VCC = 5 V, TA = 25°C.
The switch resistance is very nonlinear and varies with input voltage and supply voltage. This is the worst case.
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