ADS8354、ADS7854 和 ADS7254 均属于引脚兼容的双路高速同步采样模数转换器 (ADC) 米6体育平台手机版_好二三四系列,支持全差分模拟输入。
每个器件均包含两个可独立编程的基准电压源,可用于系统级的增益校准。 并且配有一个可在宽电源供电范围内运行的灵活串行接口,从而轻松实现与多种主机控制器的通信。 该系列器件支持两种低功耗模式,可针对给定输出优化功耗。 所有器件都在扩展工业温度范围(-40°C 至 + 125°C)内完全额定运行,并且采用引脚兼容的 WQFN-16 (3mm ×
3mm) 和 TSSOP-16 封装。
部件号 | 封装 | 封装尺寸(标称值) |
---|---|---|
ADSxx54 | TSSOP (16) | 5.00mm x 4.40mm |
WQFN (16) | 3.00mm x 3.00mm |
PRODUCT | RESOLUTION (Bits) | INPUT CONFIGURATION | NMC (Bits) | INL (LSB) | SNR (dB) |
---|---|---|---|---|---|
ADS8354 | 16 | Fully-differential | 16 | ±2.5 | 93 (typ) |
ADS7854 | 14 | Fully-differential | 14 | ±1.5 | 88 (typ) |
ADS7254 | 12 | Fully-differential | 12 | ±1 | 74 (typ) |
ADS8353 | 16 | Single-ended and pseudo-differential |
16 | ±2.5 | 89 (typ) |
ADS7853 | 14 | Single-ended and pseudo-differential |
14 | ±2 | 84 (typ) |
ADS7253 | 12 | Single-ended and pseudo-differential |
12 | ±1 | 73.5 (typ) |
PIN | I/O | DESCRIPTION | ||
---|---|---|---|---|
NAME | NO. | |||
TSSOP | WQFN | |||
AINM_A | 2 | 16 | Analog input | Negative analog input, channel A |
AINM_B | 7 | 5 | Analog input | Negative analog input, channel B |
AINP_A | 1 | 15 | Analog input | Positive analog input, channel A |
AINP_B | 8 | 6 | Analog input | Positive analog input, channel B |
AVDD | 16 | 14 | Supply | Supply voltage for ADC operation |
CS | 11 | 9 | Digital input | Chip-select signal; active low |
DVDD | 9 | 7 | Digital I/O supply | Digital I/O supply |
GND | 15 | 13 | Supply | Digital ground |
REFGND_A | 4 | 2 | Supply | Reference ground potential A |
REFGND_B | 5 | 3 | Supply | Reference ground potential B |
REFIO_A | 3 | 1 | Analog input/output | Reference voltage input/output, channel A |
REFIO_B | 6 | 4 | Analog input/output | Reference voltage input/output, channel B |
SCLK | 12 | 10 | Digital input | Clock for serial communication |
SDI | 10 | 8 | Digital input | Data input for serial communication |
SDO_A | 13 | 11 | Digital output | Data output for serial communication, channel A and channel B |
SDO_B | 14 | 12 | Digital output | Data output for serial communication, channel B |
Thermal pad | — | Thermal pad | Supply | Exposed thermal pad (only for WQFN). TI recommends connecting this pin to the printed circuit board (PCB) ground. |