- 制造厂商:AD
- 产品类别:精密模数转换器- 20 MSPS
- 技术类目:同步采样ADC
- 功能描述:具 30VP-P 共模范围的缓冲双通道、18 位、每通道 550ksps、差分 ±10.24V ADC
- (AD代理渠道,提供当日发货、严格的质量标准,满足您的目标价格)
LTC2353-18 是一款 18 位、低噪声、两通道同时采样逐次逼近型寄存器 (SAR) ADC,其具有缓冲差分、宽共模范围 pA 级输入。该 SoftSpan ADC 依靠一个 5V 低电压电源、灵活的高电压电源工作,并使用内部基准和缓冲器,其两个通道均可按“逐个转换”的方式进行独立配置,以接受 ±10.24V、0V 至 10.24V、±5.12V 或 0V 至 5.12V 信号。另外,还可以停用一个通道以增加另一个通道的吞吐量。
LTC2353-18 的集成化 pA 级输入模拟缓冲器、宽输入共模范围和 124dB CMRR 使得该 ADC 能够直接对多种信号进行数字处理,而仅需采用极小的电路板空间和功率。这种输入信号灵活性,再加上 ±3.5LSB INL、无漏失码 (在 18 位) 和 96.4dB SNR,使 LTC2353-18 非常适合于许多要求宽动态范围的高电压应用。
LTC2353-18 支持引脚可选的 SPI CMOS (1.8V 至 5V) 和 LVDS 串行接口。在 CMOS 模式中可以使用 1 个或 2 个数据输出线道,因而允许用户优化总线宽度和吞吐量。
应用
- 可编程逻辑控制器
- 工业过程控制
- 电源线监察
- 测试和测量
- 两个缓冲通道的同时采样
- 每通道 550ksps 吞吐速率
- 500pA / 12nA 最大输入漏电流 (在 85°C / 125°C)
- ±3.5LSB INL (最大值,±10.24V 范围)
- 保证 18 位,无漏失码
- 差分、宽共模范围输入
- 每个通道的 SoftSpan 输入范围:
- ±10.24V、0V至 10.24V、±5.12V, 0V至 5.12V
- ±12.5V、0V至 12.5V、±6.25V, 0V至 6.25V
- 96.4dB 单转换 SNR (典型值)
- 在 fIN = 2kHz 时 THD 的典型值为 –110dB
- 在 fIN = 200Hz 时 CMRR 的典型值为 124dB
- 轨至轨输入过驱动容限
- 集成的基准和缓冲器 (4.096V)
- SPI CMOS (1.8V 至 5V) 和 LVDS 串行 I/O
- 内部转换时钟,无周期延迟
- 162mW 功耗 (典型值)
- 48 引脚 (7mm x 7mm) LQFP 封装
LTC2353CLX-18#PBF,封装:48-Lead LQFP (7mm x 7mm),包装形式及数量:托盘,250,工作温度:0 to 70C,AD官网报价:23.71(100-499个);19.53(1000+个)
LTC2353HLX-18#PBF,封装:48-Lead LQFP (7mm x 7mm),包装形式及数量:托盘,250,工作温度:-40 to 125C,AD官网报价:31.33(100-499个);25.8(1000+个)
LTC2353ILX-18#PBF,封装:48-Lead LQFP (7mm x 7mm),包装形式及数量:托盘,250,工作温度:-40 to 85C,AD官网报价:26.05(100-499个);21.45(1000+个)
DC2365A-C:LTC2353-18 Demo Board | Buffered Dual, 18-Bit, 550ksps Simultaneous Sampling SAR ADC (Requires DC590, DC2026 or DC890)
Demonstration circuit 2365A highlights the LTC2358 family of buffered input ADCs. The LTC2358/LTC2357/LTC2353/LTC2333 are low noise, high speed, 16-/18- bit successive approximation register (SAR) ADCs with integrated front end buffers. These ADCs accept a wide common mode range. Pico-amp inputs and high CMRR enable these ADCs to connect directly to a wide range of sensors without compromising measurement accuracy. The following text refers to the LTC2358-18 but applies to all parts in the family, the only differences being the number of bits, number of channels and the maximum sample rate. The LTC2358-18 has a flexible SoftSpan interface that allows conversion-by-conversion control of the input voltage span on a per-channel basis. An internal 2.048V reference and 2X buffer simplify basic operation while an external reference can be used to increase the input range and the SNR of the ADC.
DC2365A-G:LTC2353-16 Demo Board | Buffered Dual, 18-Bit, 550ksps Simultaneous Sampling SAR ADC (Requires DC590, DC2026 or DC890)
Demonstration circuit 2365A highlights the LTC2358 family of buffered input ADCs. The LTC2358/LTC2357/LTC2353/LTC2333 are low noise, high speed, 16-/18- bit successive approximation register (SAR) ADCs with integrated front end buffers. These ADCs accept a wide common mode range. Pico-amp inputs and high CMRR enable these ADCs to connect directly to a wide range of sensors without compromising measurement accuracy. The following text refers to the LTC2358-18 but applies to all parts in the family, the only differences being the number of bits, number of channels and the maximum sample rate. The LTC2358-18 has a flexible SoftSpan interface that allows conversion-by-conversion control of the input voltage span on a per-channel basis. An internal 2.048V reference and 2X buffer simplify basic operation while an external reference can be used to increase the input range and the SNR of the ADC.