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參數資料
| 型號： | MAX7491EEE+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/18頁 |
| 文件大小： | 0K |
| 描述： | IC FILTER SW CAP DUAL 16-QSOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 濾波器類型： | 通用開關電容器 |
| 頻率 - 截止或中心： | 40kHz |
| 濾波器數： | 2 |
| 濾波器階數： | 2nd |
| 電源電壓： | 2.7 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
General Description
The MAX7490/MAX7491 consist of two identical low-
power, low-voltage, wide dynamic range, rail-to-rail,
2nd-order switched-capacitor building blocks. Each of
the two filter sections, together with two to four external
resistors, can generate all standard 2nd-order func-
tions: bandpass, lowpass, highpass, and notch (band
reject). Three of these functions are simultaneously
available. Fourth-order filters can be obtained by cas-
cading the two 2nd-order filter sections. Similarly, high-
er order filters can easily be created by cascading
multiple MAX7490/MAX7491s.
Two clocking options are available: self-clocking
(through the use of an external capacitor) or external
clocking for tighter cutoff frequency control. The clock-
to-center frequency ratio is 100:1. Sampling is done at
twice the clock frequency, further separating the cutoff
frequency and Nyquist frequency.
The MAX7490/MAX7491 have an internal rail splitter
that establishes a precise common voltage needed for
single-supply operation. The MAX7490 operates from a
single +5V supply and the MAX7491 operates from a
single +3V supply. Both devices feature a low-power
shutdown mode and come in a 16-pin QSOP package.
________________________Applications
Tunable Active Filters
Multipole Filters
ADC Anti-Aliasing
Post-DAC Filtering
Adaptive Filtering
Phase-Locked Loops (PLLs)
Set-Top Boxes
Features
o Dual 2nd-Order Filter in a 16-Pin QSOP Package
o High Accuracy
Q Accuracy: ±0.2%
Clock-to-Center Frequency Error: ±0.2%
o Rail-to-Rail Input and Output Operation
o Single-Supply Operation: +5V (MAX7490)
or +3V (MAX7491)
o Internal or External Clock
o Highpass, Lowpass, Bandpass, and Notch Filters
o Clock-to-Center Frequency Ratio of 100:1
o Internal Sampling-to-Center Frequency Ratio
of 200:1
o Center Frequency up to 40kHz
o Easily Cascaded for Multipole Filters
o Low-Power Shutdown: < 1A Supply Current
MAX7490/MAX7491
Dual Universal Switched-Capacitor Filters
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
LPA
LPB
BPB
NB/HPB
INVB
SB
COM
EXTCLK
CLK
TOP VIEW
MAX7490
MAX7491
QSOP
+
BPA
NA/HPA
SHDN
INVA
SA
GND
VDD
Pin Configuration
19-1768; Rev 1; 4/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
SUPPLY
VOLTAGE
(+V)
MAX7490CEE+
0
°C to +70°C
16 QSOP
5
MAX7490EEE+
-40
°C to +85°C
16 QSOP
5
MAX7491CEE+
0
°C to +70°C
16 QSOP
3
MAX7491EEE+
-40
°C to +85°C
16 QSOP
3
Typical Application Circuit appears at end of data sheet.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
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相關代理商/技術參數 |
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| MAX749C/D | 功能描述:顯示驅動器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
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| MAX749CPA+ | 功能描述:顯示驅動器和控制器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX749CPA+T | 制造商:Maxim Integrated Products 功能描述: |
| MAX749CSA | 功能描述:顯示驅動器和控制器 Digitally Adjustable LCD Bias Supply RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
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