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參數(shù)資料
| 型號： | MIC6211YM5 TR |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP GEN PURPOSE SOT23-5 |
| 標準包裝： | 1 |
| 系列： | IttyBitty® |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 6 V/µs |
| 增益帶寬積： | 2.5MHz |
| 電流 - 輸入偏壓： | 50nA |
| 電壓 - 輸入偏移： | 2000µV |
| 電流 - 電源： | 1.3mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | 4 V ~ 32 V，±2 V ~ 16 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應商設備封裝： | SOT-23-5 |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 1111 (CN2011-ZH PDF) |
| 其它名稱： | 576-1314-6 |
MIC6211
Micrel, Inc.
MIC6211
6
April 2006
Applications Information
Common-Mode Range and Output Voltage
The input common-mode range of the MIC6211 is from the
negative supply voltage to 1.2V below the positive supply
voltage. The output voltage swings within 1V of the positive
and negative supply voltage.
Voltage Buffer
Figure 1 shows a standard voltage follower/buffer. The output
voltage equals the input voltage. This circuit is used to buffer
a high impedance signal source. This circuit works equally
well with single or split supplies.
3
1
4
VIN
VOUT= VIN
VOUT
Figure 1. Voltage Buffer
Inverting Amplier
Figure 2 shows an inverting amplier with its gain set by the
ratio oftwo resistors.Thiscircuitworksbestwith splitsupplies,
but will perform with single supply systems if the non-invert-
ing input (+ input) is biased up above ground.
3
1
4
VIN
VOUT
R1
R2
VOUT = –VIN
R1
R2
Figure 2. Inverting Amplifer
Voltage Controlled Current Sink
Figure 3 is a voltage controlled current sink. A buffer transis-
tor forces current through a programming resistor until the
feedback loop is satised. Current ow is VIN/R. This circuit
works with single or split supplies.
3
1
4
VIN
R
I
VIN
R
Figure 3. Voltage Controlled Current Sink
High-Pass Filter
Figure 4 is an active lter with 20dB (10×) gain and a low-
frequency cutoff of 10Hz. The high gain-bandwidth of the
MIC6211 allows operation beyond 100kHz. This lter con-
guration is designed for split supplies.
1F
4
3
332k
0.1F
7.5k
VIN
VOUT
1
Figure 4a. High-Pass Filter
-20
-10
0
10
20
30
1
10
100
1,000
10,000
100,000
V
OUT
(dB)
FREQUENCY (Hz)
1 10
1k
100k
Figure 4b. High-Pass Filter Response
Summing Amplier
Figure 5 is a single supply summing amplier. In this con-
guration, the output voltage is the sum of V1 and V2, minus
the sum of V3 and V4. By adding more resistors to either
the inverting or non-inverting input, more voltages may be
summed. This single supply version has one important re-
striction: the sum of V1 and V2 must exceed the sum of V3
and V4, since the output voltage cannot pull below zero with
only a single supply.
VOUT
V2
V4
V3
V1
R
All resistors are equal.
VOUT= V1 + V2 – V3 – V4
V1 + V2 > V3 + V4 for single supply operation
1
3
4
Figure 5. Summing Amplier
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