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參數資料
| 型號： | TLC876MDW |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | ADC |
| 英文描述： | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | SOP-28 |
| 文件頁數： | 10/22頁 |
| 文件大小： | 339K |
| 代理商： | TLC876MDW |
TLC876M, TLC876I, TLC876C
10-BIT 20 MSPS PARALLEL OUTPUT CMOS
ANALOG-TO-DIGITAL CONVERTERS
SLAS140E – JULY 1997 – REVISED OCTOBER 2000
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
ac considerations
(continued)
_
+
5 V
C3
0.1
F
_
+
C4
0.1
F
C1
0.1
F
REFT
REFB
REFTS
REFTF
REFBS
REFBF
TLC876
C2
0.1
F
Figure 20. Kelvin Connection Reference Using an Operational Amplifier
With Unlimited Capacitive Load Drive Capability
Figure 21 shows a circuit using a dual operational amplifier with unlimited capacitive load drive. The operational
amplifier should provide stable 3.6 V and 1.6 V reference voltages for REFTF and REFBF, respectively. The
amplifier must be able to maintain stability while driving unlimited capacitive loads, so the 0.1
F capacitors C1
and C2 can connect directly to the outputs of the operational amplifiers, which reduces high frequency
transients. Capacitors C3 and C4 shunt across the internal resistors of the force-sense connections and prevent
instability. The stability of any operational amplifier used must be examined closely when driving capacitive
loads.
_
+
1
F
_
+
REFT
REFB
REFTS
REFTF
REFBS
REFBF
TLC876
0.1
F
1
F
0.1
F
10 k
10
10 k
10
A
This device is 1/2 of a TLV2442. The TLV2442 is a rail-to-rail output dual operational
amplifier.
A
10 k
0.1
F
10 k
0.1
F
Figure 21. Kelvin Connection Reference Using an Operational Amplifier
With Unlimited Capacitive Load Drive Capability
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