Overview
The LTC2323-12, produced by Analog Devices Inc., is a high-performance, dual 12-bit successive approximation register (SAR) analog-to-digital converter (ADC). This component is designed for high-speed applications requiring low noise and a wide input common mode range. Operating from a single 3.3 V or 5 V supply, the LTC2323-12 features differential inputs and achieves a throughput rate of 5 Msps per channel with one-cycle latency. It is particularly suited for applications that demand high dynamic range and high common mode rejection.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits + sign |
| Throughput Rate | 5 Msps per channel |
| Differential Input Range | 8 Vpp |
| Integral Nonlinearity (INL) | ±0.5 LSB typical |
| Signal-to-Noise Ratio (SNR) | 73 dB typical at fIN = 2 MHz |
| Total Harmonic Distortion (THD) | –85 dB typical at fIN = 2 MHz |
| Supply Voltage | Single 3.3 V or 5 V |
| Internal Reference | 2.048 V or 4.096 V, low drift (20 ppm/°C max) |
| I/O Voltage | 1.8 V to 2.5 V |
| Serial Interface | CMOS or LVDS SPI-compatible |
| Power Dissipation | 38 mW per channel typical |
| Package | 28-Lead QFN (4 mm x 5 mm x 0.75 mm) |
Key Features
- High speed throughput rate of 5 Msps per channel with one-cycle latency
- Differential inputs with wide input common mode range
- Low noise performance with ±0.5 LSB INL typical and no missing codes at 12 bits
- High SNR of 73 dB and low THD of –85 dB at fIN = 2 MHz
- Onboard low drift (20 ppm/°C max) 2.048 V or 4.096 V internal reference
- CMOS or LVDS SPI-compatible serial interface
- Low power dissipation of 38 mW per channel, with nap and sleep modes for further power savings
- Compact 28-Lead QFN package (4 mm x 5 mm x 0.75 mm)
Applications
- High speed data acquisition systems
- Communications
- Remote data acquisition
- Imaging
- Optical networking
- Multiphase motor control
Q & A
- What is the resolution of the LTC2323-12 ADC?
The LTC2323-12 has a resolution of 12 bits + sign.
- What is the throughput rate of the LTC2323-12?
The throughput rate is 5 Msps per channel.
- What is the differential input range of the LTC2323-12?
The differential input range is 8 Vpp.
- What is the typical integral nonlinearity (INL) of the LTC2323-12?
The typical INL is ±0.5 LSB.
- What is the signal-to-noise ratio (SNR) of the LTC2323-12 at 2 MHz input frequency?
The SNR is 73 dB typical at fIN = 2 MHz.
- What is the total harmonic distortion (THD) of the LTC2323-12 at 2 MHz input frequency?
The THD is –85 dB typical at fIN = 2 MHz.
- What are the supply voltage options for the LTC2323-12?
The LTC2323-12 can operate from a single 3.3 V or 5 V supply.
- What is the internal reference voltage of the LTC2323-12?
The internal reference voltage is 2.048 V or 4.096 V with low drift (20 ppm/°C max).
- What types of serial interfaces does the LTC2323-12 support?
The LTC2323-12 supports CMOS or LVDS SPI-compatible serial interfaces.
- What is the typical power dissipation of the LTC2323-12 per channel?
The typical power dissipation is 38 mW per channel.
