TLV1544CD - 10-Bit 85 kSPS 4-Channel SAR ADC | TI
部品番号: TLV1544CD ✓ 生産中TLV1544CD 概要
An SAR ADC is a type of analog-to-digital converter that compares an input voltage with an internally generated DAC through a sequence of binary trials. Unlike a flash or pipeline ADC, a SAR converter generally requires less circuit area and power while providing adequate speed and resolution for low-cost embedded measurement systems. The TLV1544 belongs to the ADC category within the broader data-acquisition and signal-conversion semiconductor hierarchy.
Key features include 10-bit resolution, four analog input channels, an 85 kSPS conversion rate, and CMOS construction. The serial interface reduces the number of signal paths required between the converter and a digital processor compared with a parallel-output ADC. Programmable power and power-down functions can reduce consumption when continuous conversion is unnecessary, while the programmable conversion-rate capability supports systems that trade throughput for operating efficiency.
The TLV1544 and TLV1548 are implemented as CMOS switched-capacitor SAR converters. The TLV1544 provides four channels, while the TLV1548 provides eight. Its serial interface can connect directly to a four-wire synchronous SPI port, and the manufacturer explicitly identifies TMS320 DSP compatibility. These characteristics make the converter suitable for host-controlled acquisition systems requiring flexible sampling rather than maximum data throughput.
Typical applications include industrial process monitoring, portable instrumentation, battery-powered sensor acquisition, digital potentiometer feedback, and general embedded control systems. Four analog channels allow several sensors or divided voltages to share one converter when the required sampling rate is modest. At 85 kSPS, the device is more appropriate for slow-changing process and instrumentation signals than for high-bandwidth waveform capture.
Designers should account for input settling time, reference accuracy, source impedance, and digital-interface timing. The datasheet's typical application information should guide input-channel selection and capacitor placement. Because the converter is sampled rather than continuously tracking, source settling around each conversion can affect accuracy when multiplexed inputs or high-impedance sensors are used.
This product page consolidates verified manufacturer and distributor information, package details, interface characteristics, drop-in ordering alternatives, and practical design guidance. It distinguishes confirmed TLV1544CD facts from parameters that still require verification against the manufacturer datasheet.
ドロップイン代替品: TLV1544CD — 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。
TLV1544ID
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →TLV1544CDG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLV1544CD 最大定格＆電気的特性
| 分解能 | 10 bit |
| Conversion Rate | 85 kSPS |
| Analog Input Channels | 4 channels |
| Architecture | Successive-approximation SAR |
| Technology | CMOS switched-capacitor |
| Output Interface | 4-wire synchronous serial |
| Protocol Compatibility | SPI and TMS320 DSP compatible |
| Interface Signals | CS, I/O CLK, DATA IN, and DATA OUT |
| Programmable Functions | Power, power-down, and conversion rate |
| パッケージ | 16-pin SOIC (D) |
| Package Family | SOIC-16 surface-mount package |
| Terminal Count | 16 terminals |
| 実装タイプ | Surface mount |
| Temperature Grade | Commercial |
TLV1544CD soic-16 surface-mount package ピン配置ガイド
TLV1544CD (soic-16 surface-mount package パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: TLV1544CD.
詳細は データシート をご参照ください。
主な用途
TLV1544CD の用途: 6 件s: Industrial Process Monitoring, Portable Sensor Acquisition, Digital Potentiometer Feedback, Battery-Powered Environmental Monitoring, Embedded Control and Instrumentation, TMS320-Based Data Acquisition.
Industrial Process Monitoring
The TLV1544CD fits industrial process monitoring where several relatively slow sensor or divided-voltage signals must be digitized by a common controller. Its four analog inputs allow shared sequential acquisition, while 10-bit resolution provides 1,024 discrete codes and the confirmed 85 kSPS rate supports responsive monitoring. The SPI-compatible serial interface can reduce wiring compared with a parallel ADC. The principal design consideration is source settling: high-impedance sensors may require buffers or longer acquisition intervals, and supply, reference, and input-range details must be verified in the manufacturer datasheet.
おすすめ
Portable Sensor Acquisition
The TLV1544CD is suitable for portable instrumentation that gathers four analog sensor channels and transfers results to a low-power embedded processor. Programmable power-down and conversion-rate functions can help manage operating time, while the synchronous SPI-compatible interface supports compact embedded designs. Its 85 kSPS throughput is suitable for sensors whose values change on millisecond or slower timescales rather than high-rate motion waveforms. Battery-powered implementations must additionally verify supply-voltage limits, leakage current, reference behavior, and the available total error before setting the converter’s power mode.
おすすめ
Digital Potentiometer Feedback
The TLV1544CD can digitize a wiper or feedback voltage from a digital potentiometer in control and calibration systems. Four channels allow several feedback points to share one converter when multiplexing is acceptable, and 10-bit resolution provides useful positioning granularity for many resistive-control applications. The synchronous serial output connects readily to a TMS320 or SPI-capable controller. For accurate measurement, the analog source must settle before sampling, the reference voltage must remain stable, and the application should account for the converter’s unverified input range and acquisition requirements.
おすすめ
Battery-Powered Environmental Monitoring
The TLV1544CD applies to battery-powered environmental monitoring when temperature, light, and other slowly changing sensor outputs must be measured. Four channels can consolidate several inputs, and programmable power and power-down functions support duty-cycled acquisition. The 85 kSPS rate is ample for many environmental measurements and avoids the power and complexity associated with much faster converters. However, total sensor-node energy use depends on the host wake-up cycle, standby current, external reference, and input-conditioning network, none of which can be quantified from the supplied excerpts.
おすすめ
Embedded Control and Instrumentation
The TLV1544CD supports embedded control and instrumentation systems that need compact, multiplexed analog measurement without a parallel data bus. Its four-wire synchronous interface allows a processor to control sampling and receive conversion results through shared clock and data signals. The confirmed 85 kSPS throughput is well matched to temperature, pressure, supply, and position feedback that change relatively slowly. To obtain useful accuracy, the design should establish an appropriate input range and reference, control source impedance, and observe the datasheet’s acquisition timing rather than treating the maximum sample rate as suitable for every signal.
おすすめ
TMS320-Based Data Acquisition
The TLV1544CD fits a TMS320-based acquisition system because the manufacturer identifies direct TMS320 DSP compatibility and provides chip-select, input/output clock, data-input, and data-output signals. Four analog channels and 10-bit resolution are useful for control feedback, instrumentation, and general-purpose digital monitoring, while 85 kSPS supports moderate signal bandwidth. Interface implementation must preserve the specified clock and data timing. The system should also verify voltage compatibility, required conversion latency, and whether the selected DSP supports the converter’s serial configuration without software or hardware adaptation.
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: TLV1544CD — 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 | TLV1544ID | TLV1544CDG4 |
|---|---|---|---|
| Package | SOIC-16 (D) | SOIC-16 (D) - same package, verify terminal table | SOIC-16 (D) - same package, verify ordering details |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit |
| Conversion Rate | 85 kSPS | 85 kSPS | 85 kSPS |
| Analog Input Channels | 4 channels | 4 channels | 4 channels |
| Architecture | Switched-capacitor SAR | Switched-capacitor SAR | Switched-capacitor SAR |
| Serial Interface | 4-wire synchronous serial | 4-wire synchronous serial | 4-wire synchronous serial |
| Power Control | Programmable power, power-down, and conversion rate | Programmable power, power-down, and conversion rate | Programmable power, power-down, and conversion rate |
主な差別化要因
- Four-channel acquisition in a 16-pin serial-interface package （vs TLV1548 family)
- Directly identified TMS320 compatibility （vs TLV1544CDG4)
- Programmable operating control （vs TLV1544ID)
設計ノート
Treat the four analog inputs as sampled rather than continuously tracking nodes. Confirm the acquisition time, input-capacitance requirements, and maximum source impedance in the manufacturer datasheet before multiplexing a sensor or divider network. This is particularly important when several inputs share one converter: the selected channel must be allowed to settle before its conversion begins, or the measured code may reflect residual charge from the preceding channel.
Place the reference and input-network components close to the TLV1544CD and keep sensitive analog traces away from the I/O CLK and DATA OUT traces. Use a compact ground-return path and follow the datasheet’s recommended decoupling arrangement. Because the provided excerpts do not specify capacitor values or a reference topology, those details must be taken from the manufacturer application guidance rather than inferred from generic ADC layouts.
Do not substitute the TLV1548 merely because it is a related 10-bit, 85 kSPS family member: the TLV1548 has eight channels and therefore is not a pin-compatible replacement for the four-channel TLV1544CD. Likewise, confirm the complete SOIC-16 terminal table for TLV1544ID and TLV1544CDG4 before reuse. An identical ordering family does not eliminate the need to check power pins, reference connections, interface timing, and temperature-grade limits.
Use the programmable power and power-down controls to match converter activity to the acquisition workload, but calculate the resulting system power only after obtaining the supply current, shutdown current, reference current, and conversion-rate tables from the manufacturer datasheet. The confirmed 85 kSPS maximum is not a universal operating requirement. Duty-cycling the host and converter around slowly changing sensors can reduce energy use, provided the power rails remain within the verified operating range.
コンプライアンス情報
The supplied verified excerpts identify a commercial-grade TI ADC but do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. These fields therefore remain unknown rather than being inferred from general manufacturer practices.