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參數(shù)資料
| 型號(hào)： | MIC7122YMM TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP DUAL R-R IN/OUT 8MSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | MM8™ |
| 放大器類型： | 通用 |
| 電路數(shù)： | 2 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 0.5 V/µs |
| 增益帶寬積： | 420kHz |
| 電流 - 輸入偏壓： | 1pA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 900µA |
| 電流 - 輸出 / 通道： | 250mA |
| 電壓 - 電源，單路/雙路(±)： | 2.2 V ~ 15 V，±1.1 V ~ 7.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1111 (CN2011-ZH PDF) |
| 其它名稱： | 576-1317-6 |
June 2005
7
MIC7122
Micrel
capacitance C
IN. The value of CFB is determined by first
estimating C
IN and then applying the following formula:
R
IN × CIN ≤ RFB × CFB
VIN
CFB
RFB
VOUT
CIN
RIN
Figure 2. Cancelling Feedback Phase Lag
Since a significant percentage of C
IN may be caused by board
layout, it is important to note that the correct value of C
FB may
change when changing from a breadboard to the final circuit
layout.
Typical Circuits
Some single-supply, rail-to-rail applications for which the
MIC7122 is well suited are shown in the circuit diagrams of
Figures 3 through 7.
R2
910k
R1
100k
VOUT
0V to V+
V+
VIN
12 MIC7122
0V to
V+
AV
Figure 3a. Noninverting Amplifier
0
100
0
100
V
OUT
(V)
V
IN (V)
V+
A1
R2
R1
V =+
≈ 10
Figure 3b. Noninverting Amplifier Behavior
VOUT
0V to V+
V+
VIN
0V to V+
12 MIC7122
VOUT = VIN
Figure 4. Voltage Follower/Buffer
VOUT
0V to V+
V+
VIN
0V to 2V
12 MIC7122
RS
10
12W
Load
VS
0.5V to Q1 VCEO(sus)
IOUT
Q1
2N3904
VCEO = 40V
IC(max) = 200mA
{
Change Q1 and RS
for higher current
and/or different gain.
I
V
R
100mA/V as shown
OUT
IN
S
==
Figure 5. Voltage-Controlled Current Sink
V+
0V
R4
100k
R4
100k
R3
100k
VOUT
V+
12 MIC7122
C1
0.001F
R2
100k
V+
Figure 6. Square Wave Oscillator
R3
330k
R1
33k
0V
R2
330k
R4
330k
C1
1F
VOUT
V+
12 MIC7122
CIN
V+
COUT
RL
A
R2
R1
330k
33k
10
V =
=
=
Figure 7. AC-Coupled Inverting Amplifier
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