Overview
The LTC2321IUFD-12 is a high-performance, dual-channel 12-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for applications requiring low noise, high speed, and wide input common mode range. It operates from a single 3.3V or 5V supply and features differential inputs with an 8V peak-to-peak differential input range, making it ideal for applications that demand a wide dynamic range and high common mode rejection.
The LTC2321IUFD-12 achieves high accuracy with ±0.5LSB integral nonlinearity (INL) typical and no missing codes at 12 bits. It also boasts a 73dB signal-to-noise ratio (SNR) and includes an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference. The device supports high-speed SPI-compatible serial interfaces in both CMOS and LVDS modes.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 12 | |
| Number of Channels | 2 | |
| Sampling Rate | 2 Msps | |
| Input Type | Differential, Pseudo-Differential | |
| Data Interface | LVDS - Serial, Serial (SPI-compatible) | |
| Supply Voltage | 3.13V ~ 3.47V, 4.75V ~ 5.25V | V |
| Integral Nonlinearity (INL) | ±0.5 LSB | |
| Signal-to-Noise Ratio (SNR) | 73 dB | |
| Power Dissipation (per channel) | 30 mW | mW |
| Nap Mode Current | 5 μW | μW |
| Sleep Mode Current | 5 μW | μW |
| Operating Temperature | -40°C ~ 85°C | °C |
| Package | 28-WFQFN Exposed Pad |
Key Features
- Low noise and high speed operation with 2 Msps sampling rate per channel.
- Dual-channel, 12-bit + sign SAR ADC with differential inputs and wide input common mode range.
- Onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- High-speed SPI-compatible serial interface supporting CMOS or LVDS modes.
- Simultaneous sampling capability.
- Low power consumption with nap and sleep modes reducing power to 5 μW.
- Guaranteed 12-bit, no missing codes, and ±0.5 LSB INL typical.
- 8V peak-to-peak differential input range.
Applications
- Industrial control systems.
- Data acquisition systems.
- Medical imaging and diagnostics.
- Aerospace and defense applications.
- Automotive systems requiring high-speed and accurate data conversion.
- Test and measurement equipment.
Q & A
- What is the sampling rate of the LTC2321IUFD-12?
The LTC2321IUFD-12 has a sampling rate of 2 Msps per channel.
- What is the resolution of the LTC2321IUFD-12?
The LTC2321IUFD-12 is a 12-bit ADC.
- What type of input does the LTC2321IUFD-12 support?
The LTC2321IUFD-12 supports differential and pseudo-differential inputs.
- What is the supply voltage range for the LTC2321IUFD-12?
The supply voltage range is 3.13V ~ 3.47V and 4.75V ~ 5.25V.
- Does the LTC2321IUFD-12 have an onboard reference?
Yes, the LTC2321IUFD-12 has an onboard low drift (20ppm/°C max) 2.048V or 4.096V temperature-compensated reference.
- What are the power-saving modes available on the LTC2321IUFD-12?
The LTC2321IUFD-12 offers nap and sleep modes, reducing power consumption to 5 μW during inactive periods.
- What is the operating temperature range of the LTC2321IUFD-12?
The operating temperature range is -40°C ~ 85°C.
- What package type is the LTC2321IUFD-12 available in?
The LTC2321IUFD-12 is available in a 28-WFQFN Exposed Pad package.
- Does the LTC2321IUFD-12 support simultaneous sampling?
Yes, the LTC2321IUFD-12 supports simultaneous sampling.
- What is the signal-to-noise ratio (SNR) of the LTC2321IUFD-12?
The SNR of the LTC2321IUFD-12 is 73 dB.
