Overview
CM2249 is a 16-bit, 16-channel synchronous sampling analog data acquisition system. Each channel is equipped with built-in analog input clamping protection, a second-order anti-aliasing filter, a track-and-hold amplifier, a 16-bit SAR ADC, and an integrated flexible digital filter, 2.5V reference voltage source, reference voltage buffer, and high-speed serial and parallel interfaces.
The CM2249 operates with a 5V single power supply and can handle true bipolar input signals of ±10V, ±5V, and ±2.5V. All channels can sample at rates up to 1MSPS. The input clamping protection circuit can withstand voltages up to ±19.5V, with a high input impedance of 1MΩ, and the onboard filters greatly simplify peripheral circuit design.
Features and Performance
Bipolar analog input ranges: ±10V, ±5V, and ±2.5V
5V analog power supply, 2.3V to 3.6V digital interface power supply
8×2 channel synchronous sampling input
Analog input ESD HBM up to 8000V
91.5dB SNR (500kSPS, 2x oversampling)
90dB SNR (1MSPS), -105dB THD
±0.8LSB INL, ±0.6LSB DNL
Flexible parallel/serial interfaces
SPI/QSPI/MICROWIRE/DSP compatibility
Optional CRC (Cyclic Redundancy Check) error checking
Fully integrated data acquisition solution
Analog input clamping protection
Input buffer with 1MΩ analog input impedance
Second-order anti-aliasing analog filter
On-chip precision reference voltage and buffer
Sampling rate: 2 × 1MSPS
Oversampling functionality via digital filters
Low power consumption: 180mW operating, 160mW standby
Temperature range: -40°C to 125°C
LQFP80 14mm × 14mm package
Architecture Block Diagram
Pin configuration
Applications
Data Acquisition Systems
Power Line Monitoring and Protection Systems
Multi-axis Positioning Systems
Multi-phase Motor Systems
Instrumentation and Control Systems
Typical Connection Diagram
Application Case
**Technical Advantages of CM2249 in Data Acquisition Applications for Distribution Automation Terminals
CM2249 (compatible with AD7616), a 16-bit, 16-channel, 1MSPS dual-group synchronous sampling ADC.
Performance Advantages
High Precision: 90dB SNR at 1MSPS, with noise performance on par with international competitors.
High Linearity: ±0.8LSB INL, ±0.6LSB DNL, ensuring accurate full-range conversion results and high linearity.
Low Harmonics: -105dB THD, low harmonic distortion, ensuring high fidelity.
Product list
SAR ADC
| P/N |
Type |
Package |
MPQ(Pcs) |
Benchmarks against |
| CM2248-QFPTR |
ADC |
Tray |
1600 |
AD7606 |
| CM2249-QFPT |
ADC |
Tray |
900 |
AD7616 |
| CM2368-QFPTR |
ADC |
Tray |
1600 |
AD7606C-18 |
| CM2268-QFPTR |
ADC |
Tray |
1600 |
AD7606C-16 |
| CM2219-QFNTR |
ADC |
Tray |
4900 |
AD7699 |
| CM2209-QFNTR |
ADC |
Tray |
4900 |
AD7689 |
| CM2322-MSOTA |
ADC |
Tray |
4000 |
AD7982 |
| CM2220-MSOTA |
ADC |
Reel |
4000 |
AD7980 |
| CM2431-MSOTA |
ADC |
Tray |
4000 |
AD4020 |
| CM2272-MSOTA |
ADC |
Reel |
5000 |
ADS8354 |
About Us
We focus on the application of IGBT products. Based on the application of IGBT, we have expanded our product spectrum tohigh-end Power Assemblies customization, at the same time ,Our business has expanded into the field of automation control products, including ADC/DAC, LDO, instrumentation amplifiers, electromagnetic relays, PhotoMOS, and MOSFET. In this way, we can cooperate with top Chinese manufacturers in our areas of expertise to provide reliable and cost-effective products to our customers.
Founded on the principles of innovation and excellence,stand at the forefront of semiconductor semiconductor alternative solutions and technology.
Our vision is that provide alternative solutions to our customers, improve the cost performance of their application solutions and ensure the security of their supply chain by made in China.
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