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MAX749CSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX749CSA

Manufacturer: MAXIM

Digitally Adjustable LCD Bias Supply

Partnumber Manufacturer Quantity Availability
MAX749CSA MAXIM 414 In Stock

Description and Introduction

Digitally Adjustable LCD Bias Supply The MAX749CSA is a dual, second-order, switched-capacitor filter manufactured by Maxim Integrated. Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Type:** Dual, Second-Order, Switched-Capacitor Filter  
- **Package:** 8-Pin SOIC  
- **Operating Voltage Range:** ±2.5V to ±5.5V (Dual Supply) or +5V to +11V (Single Supply)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Cutoff Frequency Range:** 0.1Hz to 30kHz (Adjustable via External Clock)  
- **Clock-to-Cutoff Frequency Ratio:** 100:1 (Typical)  
- **Total Harmonic Distortion (THD):** <0.1% (Typical)  
- **Power Supply Rejection Ratio (PSRR):** 60dB (Typical)  
- **Supply Current:** 6mA (Typical, per Filter)  

### **Descriptions:**  
The MAX749CSA is a versatile dual switched-capacitor filter that provides two independent second-order filter sections. It can be configured as a lowpass, highpass, bandpass, or notch filter. The device operates with either a single or dual power supply and offers precise frequency control via an external clock.  

### **Features:**  
- **Dual Independent Second-Order Filters**  
- **Programmable Cutoff Frequency via External Clock**  
- **Low THD (<0.1%)**  
- **Wide Operating Voltage Range**  
- **Low Power Consumption**  
- **No External Components Required for Filtering**  
- **Available in 8-Pin SOIC Package**  

This information is based solely on the manufacturer's datasheet. For detailed application notes or circuit configurations, refer to Maxim Integrated's official documentation.

Application Scenarios & Design Considerations

Digitally Adjustable LCD Bias Supply

Alternative Part Number

  • LT1107CS8 --: Low-power DC-DC converter in an 8-pin SOIC package with comparable input voltage range and switching architecture, suitable as a functional substitute for the MAX749 in many designs.
  • MC34063ACD --: Widely available general-purpose switching regulator controller in SOIC-8, supports boost/inverting topologies similar to the MAX749 and is a common cost-effective replacement.
  • TL497ACD --: Classic switching voltage regulator in SOIC package offering adjustable output and inverting/step-up operation, usable as an alternative where exact MAX749 features are not critical.

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