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MAX749ESA from MAXIM,MAXIM - Dallas Semiconductor

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MAX749ESA

Manufacturer: MAXIM

Digitally Adjustable LCD Bias Supply

Partnumber Manufacturer Quantity Availability
MAX749ESA MAXIM 32 In Stock

Description and Introduction

Digitally Adjustable LCD Bias Supply **Manufacturer:** MAXIM  

**Part Number:** MAX749ESA  

### **Specifications:**  
- **Type:** Switched-Capacitor Voltage Converter  
- **Function:** Inverting/Step-Up DC-DC Converter  
- **Input Voltage Range:** 1.5V to 5.5V  
- **Output Voltage Range:** Adjustable (Negative or Positive)  
- **Output Current:** Up to 50mA  
- **Switching Frequency:** 150kHz (Typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin SOIC (ESA)  

### **Descriptions:**  
The MAX749ESA is a versatile switched-capacitor voltage converter capable of generating both inverting and step-up (boosted) output voltages from a single positive supply. It is designed for low-power applications requiring efficient voltage conversion.  

### **Features:**  
- Single-Supply Operation (1.5V to 5.5V)  
- Inverts or Doubles Input Voltage  
- Low Quiescent Current (120µA Typical)  
- No Inductors Required  
- Adjustable Output Voltage  
- Low Output Ripple  
- Thermal Shutdown Protection  
- Small 8-Pin SOIC Package  

This device is commonly used in battery-powered systems, portable instruments, and other applications requiring efficient voltage conversion.

Application Scenarios & Design Considerations

Digitally Adjustable LCD Bias Supply
Partnumber Manufacturer Quantity Availability
MAX749ESA MAX 52 In Stock

Description and Introduction

Digitally Adjustable LCD Bias Supply The MAX749ESA is a switched-capacitor filter manufactured by Maxim Integrated. Below are the factual details about the device:

### **Manufacturer:**  
Maxim Integrated  

### **Specifications:**  
- **Type:** Switched-Capacitor Universal Filter  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Supply Voltage Range:** ±2.5V to ±5.5V (Dual Supply) or +5V to +11V (Single Supply)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Filter Type:** Lowpass, Highpass, Bandpass, Notch, or Allpass  
- **Cutoff Frequency Range:** 0.1Hz to 30kHz  
- **Clock-to-Cutoff Frequency Ratio:** 100:1 (Typical)  
- **Total Harmonic Distortion (THD):** 0.05% (Typical)  
- **Signal-to-Noise Ratio (SNR):** 80dB (Typical)  
- **Power Consumption:** 4.5mA (Typical)  

### **Descriptions:**  
The MAX749ESA is a versatile switched-capacitor filter that can be configured for various filter responses (lowpass, highpass, bandpass, notch, or allpass). It operates with either single or dual power supplies and is suitable for precision filtering applications. The device uses an external clock to set the cutoff frequency, making it adjustable over a wide range.  

### **Features:**  
- **Programmable Filter Response:** Configurable as lowpass, highpass, bandpass, notch, or allpass.  
- **Wide Frequency Range:** Adjustable from 0.1Hz to 30kHz.  
- **Low Distortion:** THD as low as 0.05%.  
- **Low Noise:** SNR of 80dB.  
- **Single or Dual Supply Operation:** Supports ±2.5V to ±5.5V (dual) or +5V to +11V (single).  
- **Low Power Consumption:** Typically 4.5mA.  
- **8-Pin SOIC Package:** Compact and surface-mountable.  

This information is based solely on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

Digitally Adjustable LCD Bias Supply
Partnumber Manufacturer Quantity Availability
MAX749ESA MAXIM 422 In Stock

Description and Introduction

Digitally Adjustable LCD Bias Supply The MAX749ESA is a switched-capacitor, dual, second-order, lowpass filter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** Maxim Integrated  
- **Package:** 8-SOIC (150 mils)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Supply Voltage Range:** ±2.375V to ±5.5V (Dual Supply) or +4.75V to +11V (Single Supply)  
- **Filter Type:** Switched-Capacitor, Dual, Second-Order Lowpass  
- **Cutoff Frequency Range:** 0.1Hz to 20kHz  
- **Clock-to-Cutoff Frequency Ratio:** 100:1 (Typical)  
- **Total Harmonic Distortion (THD):** 0.03% (Typical)  
- **Stopband Attenuation:** 40dB (Typical)  
- **Power Supply Rejection Ratio (PSRR):** 60dB (Typical)  
- **Quiescent Current:** 4mA (Typical)  

### **Descriptions:**  
The MAX749ESA is a dual, second-order, lowpass filter that uses switched-capacitor technology for precise frequency response. It is designed for applications requiring accurate filtering with minimal external components. The device operates with either single or dual power supplies and features independent cutoff frequency control for each filter section.  

### **Features:**  
- Dual, second-order lowpass filters in a single package  
- Adjustable cutoff frequency via external clock  
- Low THD (0.03%) for high-fidelity signal processing  
- Operates with single (+4.75V to +11V) or dual (±2.375V to ±5.5V) supplies  
- 40dB stopband attenuation  
- No external components required for filter response  
- Low power consumption (4mA typical)  
- Compact 8-pin SOIC package  

This information is strictly based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

Digitally Adjustable LCD Bias Supply

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