TLC4541IDRG4 - 16-bit 200kSPS Serial ADC, Auto PWDN, 8-SOIC
부품 번호: TLC4541IDRG4 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $8.92 | $89.20 |
| 100 | $7.65 | $765.00 |
| 500 | $6.4 | $3,200.00 |
| 1,000 | $5.5 | $5,500.00 |
TLC4541IDRG4 개요
A SAR ADC is a type of data-acquisition converter that uses a switched-capacitor binary-weighted DAC and a comparator to perform bit-by-bit conversion in N clock cycles for N bits of resolution. SAR ADCs combine low-latency single-shot acquisition, deterministic latency, and excellent DC accuracy, and they occupy a position in the data-converter hierarchy above flash and integrating ADCs but below pipelined and delta-sigma converters for very-high-speed or very-high-resolution tasks.
Key features of the TLC4541IDRG4 include 16-bit resolution with no missing codes, 200-kSPS throughput, single +5V analog supply, a single-ended analog input channel with pseudo-differential sampling, and a synchronous serial interface that connects directly to DSPs, microcontrollers, and SPI peripherals. The device also provides hardware-controllable auto power-down between conversions that reduces supply current to microamp levels and an industrial-grade temperature range of -40C to +85C.
Internally, the TLC4541 uses a charge-distribution CDAC, an on-chip clock generator, and a precision comparator to perform conversions. The on-chip digital interface includes a 16-bit shift register that delivers MSB-first data with an external serial clock, eliminating the need for an external high-frequency clock. An external reference voltage of typically 4.096 V (or any value up to AVDD) sets the input full-scale range.
Typical applications for the TLC4541IDRG4 include industrial process-control front ends, isolated 4 mA to 20 mA loop digitizers, multi-channel data-acquisition systems where multiple ADCs share a SPI bus, handheld instrumentation and battery-powered meters that benefit from the auto power-down, and digital signal processor (DSP) sensor interfaces.
When designing with this ADC, place the 10 uF bulk and 0.1 uF decoupling capacitors as close as possible to AVDD and DVDD pins, keep the analog input traces short and guarded, and use an external low-noise reference such as the REF5040 or REF3120 to obtain full 16-bit performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: TLC4541IDRG4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TLC4541IDRG4 (동일 폼 팩터 및 풋프린트) — 차이점: Package, Resolution, Data Interface, Number of Input Channels, Operating Temperature Range.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TLC4541IDR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLC4541ID
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLC4541IDG4
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS8320IDR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLC1541IFNG3
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$3.3 / 개
데이터시트 보기 →TLC1541CDWRG4
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$2.74 / 개
데이터시트 보기 →TLC4541IDRG4 최대 정격 & 전기적 특성
| 분해능 | 16 bit |
| Sample Rate | 200 kSPS |
| Architecture | SAR (Successive Approximation) |
| Number of Input Channels | 1 single-ended (pseudo-differential) |
| Analog Supply Voltage | 5 V (single supply) |
| Digital Supply Voltage | 5 V (single supply) |
| 입력 전압 범위 | 0 V to VREF (unipolar) |
| Data Interface | DSP / Serial / SPI |
| 기준 전압 | External, up to AVDD (typ. 4.096 V) |
| Power Consumption (Auto PWDN) | microamp range (typ. 1 uA) |
| 동작 온도 | -40C to +85C (Industrial) |
| 패키지 | 8-SOIC (0.154", 3.90 mm body width) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
TLC4541IDRG4 핀 구성
| 핀 1 | AIN — Analog input (single-ended, 0 to VREF) |
| 핀 2 | GND — Ground |
| 핀 3 | VREF — External reference input |
| 핀 4 | AVDD — Analog supply (+5 V nominal) |
| 핀 5 | DVDD — Digital supply (+5 V nominal) |
| 핀 6 | DOUT — Serial data output (MSB first) |
| 핀 7 | SCLK — Serial clock input |
| 핀 8 | CS — Chip select (active low) |
일반적인 애플리케이션
TLC4541IDRG4 적합 용도: 6 애플리케이션s: Industrial Process Control Front End, Battery-Powered Handheld Metering, Multi-Channel Data Acquisition System, Isolated 4-20 mA Loop Digitizer, DSP Sensor Interface, Medical Patient Monitoring.
Industrial Process Control Front End
The TLC4541IDRG4 fits industrial process-control front ends because its 16-bit resolution delivers the DC accuracy needed for closed-loop control of temperature, pressure, and flow variables. The 200 kSPS throughput captures fast transients in PID feedback loops, while the 8-SOIC footprint drops onto existing 4-20 mA digitizer boards. Placed behind a current-sense amplifier and a REF5040 reference, the ADC digitizes 4-20 mA loop currents with 16-bit precision. Unlike delta-sigma ADCs, its SAR architecture provides single-cycle deterministic latency suitable for synchronous control loops.
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Battery-Powered Handheld Metering
The TLC4541IDRG4's hardware auto power-down between conversions drops supply current to the microamp range, making it ideal for battery-powered handheld meters and multimeters. The 8-SOIC footprint minimizes PCB area while the SPI output streams data directly into a low-power MCU. With a single +5 V supply from a boost converter or 4-cell alkaline pack, the ADC performs on-demand conversions then shuts down. Compared with continuously-on ADCs, the auto-PWDN mode extends battery life by 5x to 50x in intermittent-duty applications.
추천
Multi-Channel Data Acquisition System
In multi-channel DAQ systems, the TLC4541IDRG4 SPI interface allows multiple ADCs to share a single bus by using individual chip-select lines, reducing MCU pin count. Its 200 kSPS throughput means 4 chips can be polled sequentially at 50 kSPS aggregate per channel without bus contention. The 16-bit no-missing-codes specification guarantees clean data for downstream DSP processing. Placed on a backplane with analog muxes (such as MUX36D04) and instrumentation amplifiers, the ADC delivers accurate multi-channel measurements with deterministic per-channel latency.
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Isolated 4-20 mA Loop Digitizer
The TLC4541IDRG4 is well suited to digitizing 4-20 mA current loops in industrial installations where galvanic isolation is required. Combined with a shunt resistor, instrumentation amplifier, and digital isolator, it forms a complete isolated analog input module. The 16-bit resolution delivers 0.001 mA resolution over the 4-20 mA span. The 8-SOIC footprint simplifies layout in compact DIN-rail modules. The deterministic SAR conversion makes synchronization with HART modems straightforward.
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DSP Sensor Interface
For DSP sensor interfaces in motor control, vibration analysis, and audio sampling, the TLC4541IDRG4 provides 16-bit, 200 kSPS conversion with a synchronous serial port that directly connects to C2000, TMS320, and other TI DSP families. The MSB-first serial output frames cleanly to the DSP SPI receive buffer without software reordering. The SAR architecture provides single-cycle latency required for synchronous motor-control loops. Combined with anti-aliasing RC filters, the ADC delivers clean sensor data for FFT and control algorithms.
추천
Medical Patient Monitoring
The TLC4541IDRG4 is suitable for non-critical medical patient monitoring applications such as body temperature, respiration, and weight measurement where 16-bit resolution and 200 kSPS throughput are sufficient. The SPI output integrates easily with low-power medical MCUs, and the 8-SOIC footprint enables compact wearable designs. The industrial temperature range (-40C to +85C) covers ambient patient environments. For safety-critical patient monitoring, additional regulatory-qualified parts should be considered, but for general telemedicine peripherals the TLC4541IDRG4 offers strong value.
추천
추천 제품 요약
엔지니어링 참조 데이터: TLC4541IDRG4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TLC4541IDR | TLC4541ID | TLC4541IDG4 | ADS8320IDR | TLC1541IFNG3 | TLC1541CDWRG4 |
|---|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same | 8-SOIC - same | PLCC-20 - different | SOIC-20 - different |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 10 bit | 10 bit |
| Sample Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 100 kSPS | 38 kSPS | 38 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR | SAR |
| Input Channels | 1 single-ended | 1 single ended | 1 single ended | 1 single ended | 1 single ended | 11 single ended | 11 single ended |
| Auto Power-Down | Yes | Yes | Yes | Yes | No | No | No |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 2.7 V to 5 V | 5 V | 5 V |
| Data Interface | SPI / DSP / Serial | SPI / DSP / Serial | SPI / DSP / Serial | SPI / DSP / Serial | SPI / Serial | SPI / Serial | SPI / Serial |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
주요 차별점
- Hardware automatic power-down between conversions (vs ADS8320IDR)
- Higher sample rate at same resolution (vs TLC1541IFNG3 / TLC1541CDWRG4)
- MSB-first serial output compatible with TI C2000 DSP (vs TLC1541IFNG3)
설계 노트
The TLC4541IDRG4 requires separate decoupling on AVDD (pin 4) and DVDD (pin 5) for best 16-bit performance. Place a 10 uF tantalum or ceramic bulk capacitor and a 0.1 uF ceramic bypass capacitor as close as possible to each supply pin, ideally within 3 mm. A ferrite bead between AVDD and DVDD is recommended when the digital and analog supplies share a common source. The auto power-down feature drops quiescent current to the microamp range when CS is high, but the bulk capacitor must recharge before the next conversion to maintain accuracy.
Keep analog input traces short, guarded by ground, and routed away from digital lines to minimize coupling noise. Use a guard ring tied to GND around the AIN pin to reduce leakage into the high-impedance analog input. Place the REF5040 or REF3120 reference and its decoupling caps close to the VREF pin. The 8-SOIC thermal pad is not present on this package, so no thermal pad connection is required.
Common TLC4541IDRG4 design pitfalls include: (1) using a noisy reference that destroys the 16-bit DC accuracy, (2) leaving SCLK running during CS high causing spurious data, (3) failing to reset the internal shift register by toggling CS at power-up, and (4) routing the analog input directly to a noisy sensor without a low-pass filter. Always use a low-noise external reference and follow the datasheet's typical application circuit for first-pass designs. Estimated: input-referred noise contribution from a 4.096 V REF5040 is approximately 6 uVrms - well below the ADC's 1 LSB (62.5 uV).
규정 준수 정보
RoHS and REACH compliance per TI material declaration. -G4 suffix designates Pb-free finish. Not AEC-Q100 qualified - use automotive-qualified ADCs for AEC-Q100 designs.
