The ADS1255 and ADS1256 are extremely low-noise, 24-bit analog-to-digital (A/D) converters. They provide complete high-resolution measurement solutions for the most demanding applications.
The converter is comprised of a 4th-order, delta-sigma (ΔΣ) modulator followed by a programmable digital filter. A flexible input multiplexer handles differential or single-ended signals and includes circuitry to verify the integrity of the external sensor connected to the inputs. The selectable input buffer greatly increases the input impedance and the low-noise programmable gain amplifier (PGA) provides gains from 1 to 64 in binary steps. The programmable filter allows the user to optimize between resolution of up to 23 bits noise-free and data rate of up to 30k samples per second (SPS).
| ADS1158 | ADS1250 | ADS1251 | ADS1252 | ADS1253 | ADS1254 | ADS1255 | ADS1258 | |
| Resolution(Bits) | 16 | 20 | 24 | 24 | 24 | 24 | 24 | 24 |
| Sample Rate (max) | 125KSPS | 25kSPS | 20kSPS | 41kSPS | 20kSPS | 20kSPS | 30kSPS | 125kSPS |
| Architecture | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma | Delta-Sigma |
| Power Consumption(Typ)(mW) | 42 | 75 | 7.5 | 40 | 7.5 | 4.36 | 36 | 42 |
| DNL(Max)(+/-LSB) | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
| INL(Max)(+/-LSB) | 1 | 0.0012% | 0.0002% | 0.0003% | 0.0002% | 0.0002% | 0.0003% | 0.0003% |
| No Missing Codes(Bits) | 16 | 20 | 24 | 24 | 24 | 24 | 24 | 24 |
| ENOB(Bits) | 16 | 18 | 19 | 19 | 19 | 19 | 23 | 21.6 |
| No. of Supplies | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| Analog Voltage AV/DD(Min)(V) | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 | 4.75 |
| Analog Voltage AV/DD(Max)(V) | 5.25 | 5.25 | 5.25 | 5.25 | 5.25 | 5.25 | 5.25 | 5.25 |
| Logic Voltage DV/DD(Min)(V) | 2.5 | 4.75 | 4.75 | 4.75 | 4.75 | 1.8 | 1.8 | 2.5 |
| Logic Voltage DV/DD(Max)(V) | 3.6 | 5.25 | 5.25 | 5.25 | 5.25 | 3.6 | 3.6 | 3.6 |
| Input Configuration Range | 1.06 Vref | Vref/PGA (1-8) | Vref | Vref | Vref | Vref | 2Vref/PGA(1-64) | 1.06Vref |
| Reference Mode | Ext | Ext | Ext | Ext | Ext | Ext | Ext | Ext |
| Rating | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| Pin/Package | 48VQFN | 16SOIC | 8SOIC | 8SOIC | 16SSOP/QSOP | 20SSOP/QSOP | 20SSOP | 48VQFN |
| # Input Channels | 16 | 1 | 1 | 1 | 4 | 4 | 2 | 16 |
| Operating Temp Range(Celsius) | -40 to 105 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 | -40 to 105 |
| 器件 | 状态 | 温度(oC) | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| ADS1255IDBR | ACTIVE | -40 to 85 | 7.00 | 1ku | SSOP(DB) | 20 | 1000 | LARGE T&R | ADS1255IDB |
| ADS1255IDBRG4 | ACTIVE | -40 to 85 | 7.00 | 1ku | SSOP(DB) | 20 | 1000 | LARGE T&R | ADS1255IDB |
| ADS1255IDBT | ACTIVE | -40 to 85 | 7.65 | 1ku | SSOP(DB) | 20 | 250 | SMALL T&R | ADS1255IDB |
| ADS1255IDBTG4 | ACTIVE | -40 to 85 | 7.65 | 1ku | SSOP(DB) | 20 | 250 | SMALL T&R | ADS1255IDB |
| 名称 | 型号 | 公司 | 工具/软件类型 |
| ADS1255 评估模块 | ADS1255EVM | Texas Instruments | 开发电路板/EVM |
| 用于模数转换器的抗混淆计算工具 | ANTIALIASINGCALC | Texas Instruments | 计算实用程序 |
| 运算放大器至 ADC 电路拓扑计算器 | ADC-INPUT-CALC | Texas Instruments | 计算实用程序 |
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| ADS1255IDBR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1255IDBR | ADS1255IDBR |
| ADS1255IDBRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1255IDBRG4 | ADS1255IDBRG4 |
| ADS1255IDBT | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1255IDBT | ADS1255IDBT |
| ADS1255IDBTG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | ADS1255IDBTG4 | ADS1255IDBTG4 |
