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參數(shù)資料
| 型號(hào)： | MAX6220ASA50 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage Reference |
| 中文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 5 V, PDSO8 |
| 封裝： | 0.150 INCH, MS-012A, SOIC-8 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 772K |
| 代理商： | MAX6220ASA50 |
M
Low-Noise, Precision, +2.5V/+4.096V/+5V
Voltage Reference
8
_______________________________________________________________________________________
Detailed Description
Temperature Stability
The MAX6220 is a highly stable, low-noise voltage ref-
erence that uses a low-power temperature-compensa-
tion scheme to achieve laboratory-standard temper-
ature stability. This produces a nearly flat temperature
curve, yet does not require the power associated with
heated references.
The output voltage can be trimmed 0.6% (min) by con-
necting a 10k
potentiometer between OUT and GND,
and connecting its tap to the TRIM pin (Figure 1). The
external trimming does not affect temperature stability.
Noise Reduction
To augment wideband noise reduction, add a 1μF
capacitor to the NR pin (Figure 2). Larger values do not
improve noise appreciably (
see Typical Operating
Characteristics
).
Noise in the power-supply input can affect output
noise, but can be reduced by adding an optional
bypass capacitor to the IN pin and GND.
Bypassing
The MAX6220 is stable with capacitive load values from
0μF to 100μF, for all values of load current. Adding an
output bypass capacitor can help reduce noise and
output glitching caused by load transients.
Applications Information
Negative Regulator
Figure 3 shows how both a +5V and -5V precision ref-
erence can be obtained from a single unregulated +5V
supply. The MAX865 generates approximately ±9V to
operate both the MAX6220 reference and the MAX480
inverting amplifier. The +5V is inverted by the MAX480.
Resistor R1 is optional, and may be used to trim the
±5V references. R2 and R4 should be matched, both in
absolute resistance and temperature coefficient. R3 is
optional, and is adjusted to set the -5V reference.
_____________________Pin Description
NAME
FUNCTION
1, 7, 8
I.C.
Internally Connected.
Do not use
.
2
IN
Positive Power-Supply Input
PIN
4
GND
Ground
3
NR
Noise Reduction. Optional capacitor
connection for wideband noise
reduction. Leave open if not used
(Figure 2).
6
OUT
Voltage Reference Output
5
TRIM
External Trim Input. Allows ±1%
output adjustment (Figure 1).
Leave open if not used.
MAX6220
IN
8V TO 40V INPUT
REFERENCE OUT
OUT
TRIM
10k
NR
GND
MAX6220
IN
8V TO 40V INPUT
REFERENCE OUT
OUT
TRIM
NR
*OPTIONAL
1
μ
F
GND
2.2
μ
F*
Figure 1. Output Voltage Adjustment
Figure 2. Noise-Reduction Capacitor
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| MAX6220ASA50/GH9 | 制造商:Maxim Integrated Products 功能描述:LOW-NOISE, PRECISION VOLTAGE REFERENCE - Rail/Tube |
| MAX6225 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Low-Noise, Precision, +2.5V/+4.096V/+5V Voltage References |
| MAX6225ACPA | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| MAX6225ACPA+ | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 2.5V/+4.096V/5V Voltage Ref RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
| MAX6225ACSA | 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel |
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