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參數(shù)資料
| 型號： | TLV2304IPW |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 比較器 |
| 英文描述： | FAMILY OF NANOPOWER OPERATIONAL AMPLIFIERS AND OPEN DRAIN COMPARATORS |
| 中文描述： | 家庭NANOPOWER運算放大器以及漏極開路比較器 |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 396K |
| 代理商： | TLV2304IPW |
TLV2302, TLV2304
FAMILY OF NANOPOWER OPERATIONAL AMPLIFIERS
AND OPEN DRAIN COMPARATORS
SLOS343 – DECEMBER 2000
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
COMPARATOR TYPICAL CHARACTERISTICS
Figure 32
t – Time –
μ
s
HIGH-TO-LOW LEVEL OUTPUT
RESPONSE FOR VARIOUS
INPUT OVERDRIVES
–
VO
1
1.5
2
2.5
0
0.05
0.1
3
10 mV
–
VI
2 mV
0.5
0
0
50
100 150 200 250 300 350 400
VCC = 2.7 V
CL = 10 pF
Rp = 1 M
(pullup to VCC)
TA = 25
°
C
50 mV
I
Figure 33
0
0.05
0.1
t – Time –
μ
s
HIGH-TO-LOW LEVEL OUTPUT
RESPONSE FOR VARIOUS
INPUT OVERDRIVES
10 mV
–
VO
50 mV
–
VI
2 mV
0
1
2
3
4
5
6
0
50
100 150 200 250 300 350 400
–1
VCC = 5 V
CL = 10 pF
Rp = 1 M
(pullup to VCC)
TA = 25
°
C
I
APPLICATION INFORMATION
reverse battery protection
The TLV2302/4 is protected against reverse battery voltage up to 18 V. When subjected to reverse battery
condition, the supply current is typically less than 100 nA at 25
°
C (inputs grounded and outputs open). This
current is determined by the leakage of six Schottky diodes and will therefore increase as the ambient
temperature increases.
When subjected to reverse battery conditions and negative voltages applied to the inputs or outputs, the input
ESD structure will turn on—this current should be limited to less than 10 mA. If the inputs or outputs are referred
to ground, rather than midrail, no extra precautions need be taken.
common-mode input range
The TLV2302/4 has rail-rail input and outputs. For common-mode inputs from –0.1 V to V
CC
– 0.8 V a PNP
differential pair will provide the gain.
For inputs between V
CC
– 0.8 V and V
CC
, two NPN emitter followers buffering a second PNP differential pair
provide the gain. This special combination of NPN/PNP differential pair enables the inputs to be taken 5 V above
the rails; because as the inputs go above V
CC
, the NPNs switch from functioning as transistors to functioning
as diodes. This will lead to an increase in input bias current. The second PNP differential pair continues to
function normally as the inputs exceed V
CC
.
The TLV2302/4 has a negative common-input range that exceeds ground by 100 mV. If the inputs are taken
much below this, reduced open loop gain will be observed with the ultimate possibility of phase inversion.
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