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參數資料
| 型號： | TLV1508IPWRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | GREEN, PLASTIC, TSSOP-20 |
| 文件頁數： | 16/46頁 |
| 文件大小： | 1065K |
| 代理商： | TLV1508IPWRG4 |
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TLV1504, TLV1508
2.7V TO 5.5V, 10BIT, 200KSPS, 4/8CHANNEL, LOW POWER
SERIAL ANALOGTODIGITAL CONVERTERS WITH AUTOPOWERDOWN
SLAS251A DECEMBER 1999 REVISED JANUARY 2003
23
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, VCC = VREFP =
2.7 V to 5.5 V, VREFM = 0 V, SCLK frequency = 20 MHz at 5 V, 15 MHz at 3 V (unless otherwise noted)
(continued)
ac specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SINAD
Signal-to-noise ratio + distortion
fI = 12 kHz at 200 KSPS
I suffix
59
60
dB
THD
Total harmonic distortion
fI = 12 kHz at 200 KSPS
82
74
dB
ENOB
Effective number of bits
fI = 12 kHz at 200 KSPS
9.6
Bits
SFDR
Spurious free dynamic range
fI = 12 kHz at 200 KSPS
83
72
dB
Analog input
Full-power bandwidth, 3 dB
1
MHz
Full-power bandwidth, 1 dB
500
kHz
Best AC performance can be measured with a 100-nF to 200-nF capacitor added between the analog input and analog ground. This circuit is
to be inserted between the driving opamp (OPA627) and the analog input AIN.
reference specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Positive reference input voltage, REFP
VCC = 2.7 V to 5.5 V
2
VCC
V
Negative reference input voltage, REFM
VCC = 2.7 V to 5.5 V
0
2
V
VCC = 5.5 V
CS = 1,
SCLK = 0, (off)
100
M
Reference input impedance
VCC = 5.5 V
CS = 0,
SCLK = 20 MHz (on)
20
25
k
Reference input impedance
VCC = 2.7 V
CS = 1,
SCLK = 0 (off)
100
M
VCC = 2.7 V
CS = 0,
SCLK = 15 MHz (on)
20
25
k
Reference Input voltage difference, REFP REFM
VCC = 2.7 V to 5.5 V
2
VCC
V
VCC = 5.5 V
VREF SELECT = 4 V
3.85
4
4.15
V
Internal reference voltage, REFP REFM
VCC = 5.5 V
VREF SELECT = 2 V
1.925
2
2.075
V
Internal reference voltage, REFP REFM
VCC = 2.7 V
VREF SELECT = 2 V
1.925
2
2.075
V
Internal reference start-up time
VCC = 5.5 V, 2.7 V with 10-F compensation cap
20
ms
Internal reference temperature coefficient
VCC = 2.7 V to 5.5 V
16
40§
PPM/
°C
Add 0.1-F and 10-F capacitors between the REFP and REFM pins
§ Not assured
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