ADS8519IDBR-Q1 - 16-Bit 250kSPS SAR ADC | Texas Instruments
部品番号: ADS8519IDBR-Q1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $15.9 | $15.90 |
| 10 | $14.31 | $143.10 |
| 100 | $12.72 | $1,272.00 |
| 500 | $11.3 | $5,650.00 |
| 1,000 | $10.05 | $10,050.00 |
ADS8519IDBR-Q1 概要
An ADC (analog-to-digital converter) is a data converter that transforms continuous analog signals into discrete digital values. Within the converter hierarchy, the SAR (successive approximation register) architecture offers an optimal balance of resolution, speed, and low power for medium-rate acquisition systems, sitting between slower delta-sigma converters and faster pipeline ADCs.
Key features include 0V to 8.192V, plus/minus 5V, and plus/minus 10V input ranges; 93dB SNR with a 20kHz input; plus/minus 1.5LSB maximum INL and plus/minus 1LSB maximum DNL with 16 bits no missing codes; an SPI-compatible serial output with daisy-chain (TAG) feature and 3-state bus; and a 5V analog supply with a wide 1.65V to 5.25V I/O supply. Data can be clocked out using the internal clock or synchronized to an external data clock.
The pinout is similar to the 16-bit ADS7809 (low-speed) and the 12-bit ADS7808 and ADS8508, simplifying migration across resolution tiers. The device is fully specified over the industrial -40C to +85C temperature range.
Typical applications include automotive and industrial data acquisition, multi-channel instrumentation with daisy-chained converters, motor-control feedback, and test equipment front ends.
Design tip: decouple the internal reference with a low-ESR capacitor and drive the input through a low-impedance buffer (e.g., THS-series op amp) to preserve the 93dB SNR; ensure the digital host can honor the conversion timing at 250kSPS.
ドロップイン代替品: ADS8519IDBR-Q1 — 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: ADS8519IDBR-Q1 （同一形状・フットプリント） — 相違点: DNL, INL, Input Ranges, Interface, SNR.
クイック比較ツール — 並列比較する代替部品を選択:
ADS8519IDBR
✅ ドロップイン✓ 在庫あり
$9.99 / 個
データシートを見る →ADS8519IBDBR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
ADS7809IDBR
⚡ 同一パッケージ📋 参考代替品（カタログ未掲載）
ADS8519IDBR-Q1 最大定格＆電気的特性
| 分解能 | 16 bit |
| サンプリングレート | 250 kSPS |
| Architecture | SAR (successive approximation register) |
| Number of Inputs | 1 |
| Input Ranges | 0V to 8.192V, +-5V, +-10V |
| SNR | 93 dB (20 kHz input) |
| INL | +-1.5 LSB max |
| DNL | +-1 LSB max, 16 bits no missing codes |
| Internal Reference | 4.096 V |
| Analog Supply | 5 V |
| I/O Supply | 1.65 V to 5.25 V |
| インターフェース | SPI-compatible serial with daisy-chain (TAG), 3-state bus |
| 動作温度 | -40C to +85C |
| パッケージ | 28-SSOP (DB) |
| 実装タイプ | Surface Mount |
| Automotive Qualification | AEC-Q100 (Q1) |
| RoHS ステータス | Compliant |
ADS8519IDBR-Q1 ピン構成
| ピン 1 | BP — Bipolar offset input |
| ピン 2 | AG1 — Analog ground |
| ピン 3 | CAP — Reference buffer capacitor |
| ピン 4 | REF — Reference input/output (4.096V internal) |
| ピン 5 | R1IN — Range input 1 |
| ピン 6 | R2IN — Range input 2 |
| ピン 7 | R3IN — Range input 3 |
| ピン 8 | IN — Analog input |
| ピン 9 | AG2 — Analog ground |
| ピン 10 | VANA — 5V analog supply |
| ピン 11 | BYTE — Byte selection |
| ピン 12 | TAG — Tag input for daisy-chain |
| ピン 13 | BUSY — Conversion status output |
| ピン 14 | DGND — Digital ground |
| ピン 15 | RC — Read/convert input |
| ピン 16 | EXT/INT — External/internal clock select |
| ピン 17 | DATACLK — Data clock I/O |
| ピン 18 | SDATA — Serial data output |
| ピン 19 | VDIG — Digital I/O supply (1.65V to 5.25V) |
| ピン 20 | CS — Chip select |
| ピン 21-28 | D15-D8 / parallel data — [DATA_NEEDED: exact parallel pin mapping] |
主な用途
ADS8519IDBR-Q1 の用途: 6 件s: Automotive Data Acquisition, Industrial Data Acquisition Systems, Motor Control Feedback, Test and Measurement Front Ends, Multi-Channel Sensor Arrays, Power Quality and Energy Monitoring.
Automotive Data Acquisition
The ADS8519IDBR-Q1's AEC-Q100 qualification makes it suitable for automotive ECU data acquisition where 16-bit resolution captures sensor signals such as pressure, position, and battery current. Its 93dB SNR with a 20kHz input preserves small-signal fidelity, while the integrated 4.096V reference reduces BOM count in space-constrained modules. The SPI-compatible serial output with daisy-chain TAG feature lets several converters share one controller data line, cutting harness complexity. Placed behind a precision op-amp front end, the converter delivers deterministic 4us conversion cycles with no pipeline latency.
おすすめ
Industrial Data Acquisition Systems
In industrial DAQ, the ADS8519 handles plus/minus 10V and 0V to 8.192V input ranges natively, directly interfacing standard industrial signal levels without extra attenuation stages. Its 250kSPS rate supports multi-channel scanning at kilohertz per channel, while +-1.5LSB max INL and 16 bits no missing codes guarantee accurate absolute measurements. The daisy-chain serial bus reduces isolation-channel count in galvanically isolated front ends. Its industrial -40C to +85C rating matches factory-floor environments, and SAR architecture gives predictable timing for synchronized sampling.
おすすめ
Motor Control Feedback
The ADS8519 provides deterministic, single-cycle SAR conversion - no pipeline delay - which is critical for current-loop feedback in motor drives running at switching frequencies in the tens of kilohertz. Its 250kSPS throughput supports per-cycle current sampling, and the plus/minus 5V range suits shunt-amplifier outputs. With a 1.65V to 5.25V I/O supply, it interfaces directly with 3.3V MCUs such as the TMS320F28004x C2000 family. The sample-and-hold aperture ensures simultaneous-in-time measurement for balanced phase-current calculations.
おすすめ
Test and Measurement Front Ends
Bench instruments and automated test equipment benefit from the ADS8519's 93dB SNR, which yields an effective noise floor near 15 bits, adequate for precision DC and low-frequency AC measurement. The integrated reference and sample-and-hold reduce design effort in instrument front ends, while the 3-state serial bus simplifies multi-converter backplanes. Its SAR latency is zero-cycle (data valid immediately), avoiding the group delay of delta-sigma filters, which matters for event capture and waveform recording in test systems.
おすすめ
Multi-Channel Sensor Arrays
The TAG daisy-chain serial output allows multiple ADS8519 converters to share a single SPI data line, reducing controller pin count and isolation channels in sensor arrays. Each device still samples independently and simultaneously, preserving phase alignment across channels - important for vibration and power-quality monitoring. The 250kSPS per-channel rate covers audio-band and mechanical diagnostics. Because the pinout is similar to the ADS7809/ADS7808 family, channel-count upgrades can reuse the same footprint across resolution tiers.
おすすめ
Power Quality and Energy Monitoring
The ADS8519's bipolar plus/minus 10V range directly accepts scaled AC mains and current-transformer signals, while 16-bit resolution resolves low-level harmonics within a large dynamic range. Its 93dB SNR supports harmonic analysis up to the 12th order at 50/60Hz fundamentals with margin. Zero-latency SAR sampling enables true simultaneous voltage-current capture for accurate power factor computation. The internal 4.096V reference keeps channel-to-channel matching consistent across multi-board installations, simplifying factory calibration.
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: ADS8519IDBR-Q1 — 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 | ADS8519IDBR | ADS8519IBDBR | ADS7809IDBR |
|---|---|---|---|---|
| Package | 28-SSOP (DB) | 28-SSOP (DB) - same | 28-SSOP (DB) - same | 28-SSOP (DB) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit |
| Sampling Rate | 250 kSPS | 250 kSPS | 250 kSPS | 100 kSPS |
| Temperature Range | -40C to +85C (Q1) | -40C to +85C | -40C to +85C (IB grade, tighter limits) | -40C to +85C |
| Automotive Qualification | AEC-Q100 (Q1) | No | No | No |
主な差別化要因
- AEC-Q100 automotive qualification （vs ADS8519IDBR)
- Zero pipeline latency SAR architecture （vs ADS127L11)
- Native +-10V input range （vs ADS7809IDBR)
設計ノート
Keep the analog ground plane under the ADC separate from the digital plane, joining at one point near DGND. Decouple VANA with 10uF tantalum plus 0.1uF ceramic at the pin, and place the CAP-pin reference buffer capacitor per the datasheet layout figure. Route the SPI clock away from the IN and REF traces to avoid digital coupling that would degrade the 93dB SNR.
Drive the analog input from a low-impedance source such as the OPA827 or THS4531A; the SAR sampling capacitor draws charge impulses at each acquisition, and high source impedance causes settling errors visible as INL degradation near mid-code. If using the +-10V range, scale with a precision resistor network before a unity-gain buffer rather than loading the sensor directly.
Verify the RC (read/convert) timing at 250kSPS: toggling RC faster than the specified conversion window truncates the SAR cycle and produces corrupted data. When daisy-chaining via the TAG feature, ensure the external data clock is fast enough to shift all chained devices' bits within the frame. Also confirm the I/O supply (1.65V to 5.25V) matches your MCU logic levels before tying VDIG.
コンプライアンス情報
RoHS compliant per TI product page; Q1 suffix indicates AEC-Q100 automotive qualification.
