ADS1210P - 24-Bit Delta-Sigma ADC 16kSPS, DIP-18 | Texas Instruments
部品番号: ADS1210P ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $17.5 | $17.50 |
| 10 | $15.2 | $152.00 |
| 100 | $13.1 | $1,310.00 |
| 500 | $11.85 | $5,925.00 |
| 1,000 | $10.95 | $10,950.00 |
ADS1210P 概要
A delta-sigma ADC is a type of oversampling converter that achieves very high resolution by trading speed for noise averaging. The ADS1210P belongs to the precision-measurement ADC family, within the broader hierarchy: ADC -> data converter -> signal chain IC -> semiconductor. Its combination of a wide dynamic range, programmable gain, and integrated flexible serial interface (SPI/SSI-compatible with 2-wire mode) makes it suitable for instrumentation-grade front ends.
Key features include: 23-bit effective resolution at 10 Hz, 20 bits at 1000 Hz, differential analog inputs, programmable gain amplifier with gain up to 128, programmable cutoff frequency, on-chip calibration, and a flexible SPI-compatible SSI interface that also supports a 2-wire mode. These features allow the ADS1210P to replace a complete discrete precision ADC front end with a single IC, simplifying high-accuracy measurement designs.
Typical applications include weigh scales (load-cell digitizers), industrial process control sensors (pressure, strain, temperature via RTD/thermocouple conditioning), precision transducer readouts (e.g., weighing platforms, flow meters), and laboratory instrumentation. The internal PGA and single-cycle conversion settling make it well suited to multiplexed low-frequency, high-resolution systems.
When designing with this part, observe careful grounding between the analog AVSS/AVDD pins and the digital DVSS/DVDD pins, and place the reference and input decoupling capacitors close to the package. The ADS1210/ADS1211 share a common footprint but differ on pins 1-3 and 22-24, so a layout that ties unused inputs to analog ground is needed for ADS1211 drop-in. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: ADS1210P — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADS1210P （同一形状・フットプリント） — 相違点: Architecture, Package, Resolution.
クイック比較ツール — 並列比較する代替部品を選択:
ADS1211P
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1212P
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS1213P
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADS1220IPWR
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$1.91 / 個
データシートを見る →ADS1231IPW
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADS1210P 最大定格＆電気的特性
| 分解能 | 24 bits |
| Effective Resolution (10 Hz) | 23 bits |
| Effective Resolution (1000 Hz) | 20 bits |
| Number of Inputs | 1 differential |
| Architecture | Delta-Sigma (Sigma-Delta) |
| Output Data Rate | Up to 16 kSPS |
| Programmable Gain Amplifier | 1 to 128 |
| Analog Supply Voltage (AVDD) | 5 V (single supply) |
| Digital Supply Voltage (DVDD) | 5 V (single supply) |
| Serial Interface | SPI/SSI-compatible, 2-wire mode supported |
| パッケージ | 18-pin PDIP (through-hole) |
| Terminal Form | Through-Hole |
| Operating Temperature Grade | Industrial |
| On-Chip Calibration | Yes |
ADS1210P ピン構成
| ピン 1 | AINP1 — Differential analog input 1 (positive) |
| ピン 2 | AINN1 — Differential analog input 1 (negative) |
| ピン 3 | AINP2 — Differential analog input 2 (positive) |
| ピン 4 | AVSS — Analog ground |
| ピン 5 | AVDD — Analog +5 V supply |
| ピン 6 | VREF+ — External reference input (positive) |
| ピン 7 | VREF- — External reference input (negative) |
| ピン 8 | CAP — Reference bypass capacitor |
| ピン 9 | AVDD — Analog +5 V supply (secondary pin) |
| ピン 10 | AVSS — Analog ground (secondary pin) |
| ピン 11 | AINN2 — Differential analog input 2 (negative) |
| ピン 12 | XO — Crystal oscillator output |
| ピン 13 | XI — Crystal oscillator input / external clock |
| ピン 14 | DVDD — Digital +5 V supply |
| ピン 15 | DVSS — Digital ground |
| ピン 16 | CS — Chip select (active low, serial interface) |
| ピン 17 | SCLK — Serial clock input |
| ピン 18 | SDOUT — Serial data output / DRDY |
主な用途
ADS1210P の用途: 7 件s: Weigh Scales and Load-Cell Digitizers, Industrial Process-Control Sensors, Precision Temperature Measurement with RTD/Thermocouple, Laboratory Instrumentation and Data Loggers, Strain-Gauge Transducer Readout, Flow Meters and Coriolis-Mass-Flow Readouts, Battery-Powered Remote Sensor Modules.
Weigh Scales and Load-Cell Digitizers
The ADS1210P's 23 effective bits at 10 Hz and on-chip PGA (gain 1 to 128) directly digitize bridge sensor signals without external instrumentation amplifiers. In a typical load-cell front end, four strain gauges in a Wheatstone bridge generate a 1 mV/V full-scale output; the ADS1210P PGA amplifies this to the input range, and the 24-bit delta-sigma modulator rejects 50/60 Hz mains interference. Compared to discrete ADCs with external PGAs, the ADS1210P eliminates three components, reduces board area, and achieves 19-bit noise-free resolution at a 10 Hz update rate - sufficient for commercial scale certifications.
おすすめ
Industrial Process-Control Sensors
For pressure, strain, and temperature transmitters, the ADS1210P's differential inputs reject common-mode noise picked up in industrial wiring. The on-chip PGA supports gains up to 128, accommodating RTD and thermocouple signal levels directly with millivolt resolution. The flexible SSI serial interface with 2-wire mode simplifies isolation barrier design; only two optocouplers are needed between the ADC and the host MCU. At 16 kSPS max and 16-bit noise-free code at 1 kHz, the ADS1210P meets the bandwidth requirements of most process-control loops (typical loop update 1-10 Hz) while delivering better than 0.01% accuracy after calibration.
おすすめ
Precision Temperature Measurement with RTD/Thermocouple
RTDs and thermocouples produce millivolt-level signals that the ADS1210P's internal PGA can digitize directly, removing the need for a dedicated analog front-end IC. The 23-bit effective resolution at 10 Hz provides < 0.01 °C temperature resolution for PT100 RTDs in 4-wire Kelvin configurations. The on-chip calibration registers remove gain and offset drift over temperature, while the programmable digital filter cutoff rejects 50/60 Hz mains pickup - critical for industrial environments. Compared to integrating ADCs (e.g., ICL7135), the ADS1210P delivers > 10x faster conversion at the same noise floor.
おすすめ
Laboratory Instrumentation and Data Loggers
Laboratory data acquisition systems require 5-1/2 to 6-1/2 digit accuracy, which the ADS1210P's 20+ bit noise-free performance supports at moderate update rates. The wide dynamic range (with PGA) lets one channel digitize both low-amplitude sensor outputs and 5 V transducer outputs. For multi-channel loggers, the serial interface allows simple daisy-chaining of multiple ADS1210Ps on a single SPI bus. The device operates over the industrial temperature range, with on-chip calibration that maintains accuracy across the working environment - essential for unattended field instruments.
おすすめ
Strain-Gauge Transducer Readout
The ADS1210P's differential inputs and on-chip PGA up to 128x are ideal for strain-gauge pressure transducers, which typically output 1-3 mV/V signals. The 24-bit resolution, combined with on-chip digital filter cutoffs down to 1 Hz, lets the designer meet demanding pressure sensor accuracy requirements without external noise-reduction circuitry. The flexible serial interface connects directly to most host microcontrollers, while the single +5 V supply simplifies power design in 4-20 mA loop-powered transmitters.
おすすめ
Flow Meters and Coriolis-Mass-Flow Readouts
Coriolis and thermal mass flow meters require high-resolution, low-bandwidth digitizers that the ADS1210P provides. The 23 ENOB at 10 Hz output rate is well matched to flow integrator dynamics (typically < 100 Hz). The differential inputs simplify direct connection of flow sensor bridge outputs, while the programmable digital filter cutoff lets the designer trade off response time against noise. Compared to dual-slope integrating ADCs of similar resolution, the ADS1210P is much faster (16 kSPS max) and provides a synchronous serial interface suited to modern MCUs.
おすすめ
Battery-Powered Remote Sensor Modules
Remote telemetry applications benefit from the ADS1210P's single +5 V supply and integrated PGA, which minimize external components and power consumption. While not an ultra-low-power ADC, its ability to power down between conversions (controlled through serial interface commands) supports battery-friendly duty cycling in slow measurement applications. The wide digital filter cutoff range lets engineers tailor update rates to application needs (10 Hz for slow temperature, 1 kHz for vibration/pressure). For ultra-low-power requirements (microamp range), consider the ADS1220 as a lower-power successor.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADS1210P — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADS1211P | ADS1212P | ADS1213P | ADS1220IPW |
|---|---|---|---|---|---|
| Package | PDIP-18 | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 24 bits | 24 bits | 24 bits | 24 bits | 24 bits |
| Number of Input Channels | 1 differential | 2 differential | 1 differential | 4 (mux) | 3 differential |
| Programmable Gain Amplifier | 1 to 128 | 1 to 128 | 1 to 128 | 1 to 128 | 1 to 128 |
| Supply Voltage | Single +5 V (AVDD/DVDD) | Single +5 V | Single +5 V | Single +5 V | Single +2.3 to +5.5 V (broader range) |
| Serial Interface | SSI/SPI, 2-wire mode | SSI/SPI, 2-wire mode | SSI/SPI | SSI/SPI | SPI |
| Pin Compatibility vs ADS1210P | - | Pin 1-3 & 22-24 differ (tie extras to AGND) | Drop-in (verify per datasheet) | Drop-in family variant (verify per datasheet) | Newer pinout - verify footprint |
主な差別化要因
- On-chip PGA with gain up to 128 eliminates external instrumentation amplifier （vs ADS1251 (PGA-less 24-bit delta-sigma))
- Flexible SSI-compatible serial interface with 2-wire mode （vs ADS1100 (I2C-only interface))
- Single +5 V supply simplifies power design （vs ADS1220 (2.3 to 5.5 V wider range but lower-power))
設計ノート
Decouple the analog (AVDD/AVSS) and digital (DVDD/DVSS) supplies independently with separate 10 µF + 0.1 µF ceramic capacitor pairs placed within 5 mm of the supply pins. Use a ferrite bead or small resistor between DVDD and AVDD to suppress digital switching noise from coupling into the analog path. Tie AVSS and DVSS at a single low-impedance ground point (typically the power connector or star-ground) to avoid ground loops.
Place the external reference decoupling capacitor (CREF, typically 0.1 µF in parallel with 10 µF) directly across the VREF+/VREF- pins; noise or drift on the reference directly limits ADC accuracy and noise performance. The crystal oscillator (or external clock) must be stable: a noisy clock modulates the delta-sigma modulator's sampling and appears as spurious tones in the output. For highest accuracy, use a low-TCXO or a high-quality crystal with a series damping resistor.
Route the analog input traces differentially and symmetrically from the sensor to the AINP1/AINN1 (and AINP2/AINN2) pins; keep these traces short and guarded by analog ground planes to minimize common-mode noise pickup. Isolate the digital interface lines (CS, SCLK, SDOUT) from the analog input traces by either routing on different layers or by using a ground trace between them. Avoid running digital traces parallel to the analog inputs.
Estimated: at 24-bit resolution, 1 LSB at 5 V full-scale with PGA=128 represents approximately 5 V / (2^24 × 128) ≈ 2.3 nV. Maintaining this resolution requires that the analog input network noise (sensor + resistors + ADC input-referred noise) remain well under 2 nV RMS in the ADC bandwidth. In practice, use low-noise front-end op-amps (e.g., OPA1612) and Kelvin-sense wiring from the bridge sensor to maximize real-world noise performance.
コンプライアンス情報
RoHS, REACH, lead-free, halogen-free status not explicitly listed in the verified web snippets retrieved on 2026-10-12. Most modern TI PDIP shipments are lead-free; request a compliance declaration from the distributor. The ADS1210P is not AEC-Q100 qualified - not recommended for automotive safety-critical applications; for new automotive designs, use a modern AEC-Q100 ADC like ADS1220.
