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參數(shù)資料
| 型號： | TLV2548MPWREP |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | GREEN, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 13/37頁 |
| 文件大小： | 915K |
| 代理商： | TLV2548MPWREP |
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SLAS668 – OCTOBER 2009
www.ti.com
ELECTRICAL CHARACTERISTICS
over operating free-air temperature range, VCC = VREFP = 3 V to 5.5 V, VREFM = 0 V, SCLK frequency = 20 MHz at 5 V,
15 MHz at 3 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP (1)
MAX
UNIT
VCC = 5.5 V, IOH = -0.2 mA at 30 pF load
2.4
VOH
High–level output voltage
V
VCC = 3.0 V, IOH = –20 μA at 30 pF load
VCC-0.2
VCC = 5.5 V, IOL = 0.8 mA at 30 pF load
0.4
VOL
Low–level output voltage
V
VCC = 3.0 V, IOL = 20 μA at 30 pF load
0.1
VO = VCC
CS = VCC
2.5
Off–state output current
IOZ
μA
(high–impedance–state)
VO = 0
CS = VCC
–2.5
IIH
High–level input current
VI = VCC
0.005
2.5
μA
IIL
Low–level input current
VI = 0 V
–0.005
2.5
μA
VCC = 4.5 V to 5.5 V
2
CS at 0 V, Ext ref
VCC = 3.0 V to 3.3 V
1
Operating supply current,
normal short sampling
VCC = 4.5 V to 5.5 V
2.4
CS at 0 V, Int ref
VCC = 3.0 V to 3.3 V
1.7
ICC
mA
VCC = 4.5 V to 5.5 V
1.1
CS at 0 V, Ext ref
VCC = 3.0 V to 3.3 V
1
Operating supply current,
extended sampling
VCC = 4.5 V to 5.5 V
2.1
CS at 0 V, Int ref
VCC = 3.0 V to 3.3 V
1.6
Power down supply current
VCC = 4.5 V to 5.5 V, Ext clock
1
for all digital inputs,
ICC(PD)
μA
0
≤ VI ≤ 0.3 V or
VCC = 2.7 V to 3.3 V, Ext clock
1
VI ≥ VCC - 0.3 V, SCLK = 0
Auto power–down current
VCC = 4.5 V to 5.5 V, Ext clock, Ext ref
1.0(2)
for all digital inputs,
ICC(AUTOPWDN)
μA
0
≤ VI ≤ 0.3 V or
VCC = 2.7 V to 3.3 V, Ext ref, Ext clock
1.0(3)
VI ≥ VCC - 0.3 V, SCLK = 0
Selected channel at VCC
2.5
Selected channel leakage
μA
current
Selected channel at 0 V
2.5
Maximum static analog
reference current into
VREFP = VCC = 5.5 V, VREFM = GND
1
μA
REFP (use external
reference)
Analog inputs
45
50
Ci
Input capacitance
pF
Control Inputs
5
25
VCC = 4.5 V
500
Zi
Input MUX ON resistance
VCC = 2.7 V
600
AC SPECIFICATIONS
Signal-to-noise ratio +
SINAD
fI = 12 kHz at 200 KSPS
65
71
dB
distortion
TA = –55°C
–82
–73
THD
Total harmonic distortion
fI = 12 kHz at 200 KSPS
dB
All other
–82
–75
temperatures
ENOB
Effective number of bits
fI = 12 kHz at 200 KSPS
11.6
Bits
SFDR
Spurious free dynamic range fI = 12 kHz at 200 KSPS
–84
–75
dB
Analog Input
Full-power bandwidth, –3 dB
1
MHz
Full-power bandwidth, –1 dB
500
kHz
(1)
All typical values are at VCC = 5 V, TA = 25°C.
(2)
1.2 mA if internal reference is used, 165
μA if internal clock is used.
(3)
0.8 mA if internal reference is used, 116
μA if internal clock is used.
20
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TLV2548-EP
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