TLC1541IFNG3 - 10-Bit, 32 kSPS, 11-Ch SAR ADC | Texas Instruments
Référence : TLC1541IFNG3 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $6.18 | $6,18 |
| 10 | $5.55 | $55,50 |
| 100 | $4.66 | $466,00 |
| 500 | $3.95 | $1 975,00 |
| 1 000 | $3.3 | $3 300,00 |
TLC1541IFNG3 Présentation
A SAR ADC is a successive-approximation analog-to-digital converter, a subtype of ADC architecture that performs a binary search across the analog input range using an internal sample-and-hold and a comparator. Within the broader hierarchy, SAR ADCs belong to the direct-conversion ADC family (versus delta-sigma, dual-slope, and pipeline ADCs) and are widely used in data acquisition, process control, and instrumentation applications where moderate resolution (8-16 bit) and low latency are required. The TLC1541 family, which includes 11 multiplexed input channels, was designed as a microprocessor peripheral or standalone data-acquisition front-end, with on-chip track-and-hold, internal clock, and self-test modes.
Key features include 11 analog input channels (10 external + 1 self-test), on-chip 12-channel analog multiplexer, software-configurable unipolar/bipolar input modes, and a maximum linearity error of ±1 LSB at 10 bits. The device operates from a single +5 V analog supply with a separate digital supply pin for noise isolation. The 20-pin PLCC (J-lead, FN) package provides socket-friendly through-hole-style mounting on SMT boards, simplifying prototyping and field replacement compared with fine-pitch QFN packages.
The architecture combines a charge-redistribution DAC for successive approximation with a sample-and-hold front-end, allowing it to settle a full 10-bit conversion in 21 µs. The serial interface (compatible with TMS320 and SPI-style peripherals) reduces pin count versus parallel-output ADCs of similar resolution, simplifying PCB routing on dense mixed-signal boards. The built-in self-test voltage (Vref) plus channel 11 self-test address enables on-command verification of converter integrity without external stimuli.
Typical applications include multi-channel data acquisition front-ends, industrial process-control analog input modules, portable instrumentation and panel meters, and embedded sensor digitizers. The wide input range (0-5 V with 5 V supply) and bipolar-mode flexibility also suit transducer-signal conditioning for thermocouples, RTDs, and strain-gauge bridges through external signal conditioning.
When designing with this part, place the analog and digital supply pins close to low-impedance decoupling (typically 10 µF bulk + 0.1 µF ceramic) and keep analog/digital ground returns separated to a single-point tie under the IC. The SAR input draws transient current during conversion, so source impedance above 1 kΩ may degrade linearity unless an external input buffer is added.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not collected in any single distributor listing or the manufacturer datasheet alone.
Alternatives de remplacement direct pour TLC1541IFNG3 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec TLC1541IFNG3 (même facteur de forme et même empreinte) — différant par Package, Architecture, Resolution, Data Interface, Digital Supply Voltage.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
TLC1541IFNR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLC1541CFNG3
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
TLC1541CFNR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
TLC1541CDWRG4
✅ Remplacement direct✓ En stock
$2.74 / unité
Voir la fiche technique →TLC1541IFNG3 Valeurs maximales et caractéristiques électriques
| Résolution | 10 bit |
| Number of Analog Input Channels | 11 (10 external + 1 self-test) |
| Conversion Architecture | SAR (Successive Approximation Register) |
| Fréquence d'échantillonnage | 32 kSPS |
| Conversion Time | 21 µs (typical) |
| Analog Input Voltage Range | 0 V to 5.5 V (with 5 V supply) |
| Data Interface | Serial (3-state output, 4-wire control) |
| Integral Linearity Error (max) | ±1 LSB (±0.0977 %) |
| Tension d'alimentation | +5 V (analog); separate digital supply pin |
| On-Chip Features | Sample-and-hold, 12-channel analog MUX, self-test voltage, internal oscillator |
| Input Modes | Software-configurable unipolar / bipolar |
| Plage de température de fonctionnement | -40 °C to +85 °C (industrial) |
| Boîtier | 20-pin PLCC (FN) J-lead, 9x9 mm |
| Type de montage | Surface Mount |
| Packaging | Tube |
| Statut RoHS | Compliant |
Configuration des broches de TLC1541IFNG3
| Broche 1 | AIN0 — Analog input channel 0 |
| Broche 2 | AIN1 — Analog input channel 1 |
| Broche 3 | AIN2 — Analog input channel 2 |
| Broche 4 | AIN3 — Analog input channel 3 |
| Broche 5 | AIN4 — Analog input channel 4 |
| Broche 6 | AIN5 — Analog input channel 5 |
| Broche 7 | AIN6 — Analog input channel 6 |
| Broche 8 | AIN7 — Analog input channel 7 |
| Broche 9 | AIN8 — Analog input channel 8 |
| Broche 10 | AIN9 — Analog input channel 9 |
| Broche 11 | AIN10/SELF-TEST — Analog input channel 10 / self-test voltage |
| Broche 12 | REF+ — Reference voltage positive input |
| Broche 13 | REF- — Reference voltage negative input (analog ground) |
| Broche 14 | AVCC — Analog +5 V supply |
| Broche 15 | AGND — Analog ground |
| Broche 16 | CS — Chip select (active low) for serial interface |
| Broche 17 | I/O CLOCK — Serial data clock input |
| Broche 18 | ADDRESS — Serial address input for channel select |
| Broche 19 | EOC — End-of-conversion output (active low) |
| Broche 20 | DOUT — Serial data output (3-state) |
Applications typiques
TLC1541IFNG3 convient pour 7 applications: Multi-Channel Data Acquisition Front-End, Industrial Process Control Analog Input Modules, Portable Instrumentation and Panel Meters, Embedded Sensor Digitizers, Automated Test Equipment (ATE) Card Digitizers, Battery Monitoring and Energy-Management Inputs, Automotive Sensor Signal Conditioning Modules.
Multi-Channel Data Acquisition Front-End
The TLC1541IFNG3 fits data-acquisition front-ends by combining an 11-channel analog multiplexer with a 10-bit SAR converter in one IC, eliminating external channel-switching components. With a 32 kSPS aggregate rate (21 µs conversion time), a single TLC1541IFNG3 can sequentially digitize up to 10 sensor channels at rates above 2 kSPS each. The serial output reduces pin count versus parallel-output ADCs, simplifying routing on dense mixed-signal boards where multiple sensor rails converge at the controller.
Recommandé
Industrial Process Control Analog Input Modules
In industrial process-control PLC analog input modules, the TLC1541IFNG3's industrial -40C to +85C temperature range and 0-5 V analog input span match standard transducer outputs (4-20 mA across 250 Ω, or 0-10 V divided). The on-chip 12-channel MUX handles multiple thermocouple/RTD/strain-gauge signals through external signal conditioning. The built-in self-test voltage (channel 11) lets the host periodically verify converter integrity for SIL-class safety diagnostics.
Recommandé
Portable Instrumentation and Panel Meters
Portable instrumentation such as handheld multimeters and panel meters benefits from the TLC1541IFNG3's single +5 V supply operation and low power consumption, allowing battery-powered operation with simple regulator rails. The 10-bit resolution is adequate for 3.5-digit panel-meter display accuracy, and the 11-channel input supports voltage, current, and temperature measurements in a single instrument. The PLCC package is rugged against vibration and field-replaceable without specialized tooling.
Recommandé
Embedded Sensor Digitizers
The TLC1541IFNG3 digitizes embedded sensor arrays (temperature, pressure, humidity, position) by multiplexing multiple low-bandwidth analog signals into a single MCU-friendly serial stream. With 32 kSPS throughput and software-configurable unipolar/bipolar modes, it adapts to single-ended bridge sensors (load cells, strain gauges) as well as ratiometric RTD/thermistor dividers. The serial interface is compatible with most MCU SPI peripherals and TMS320 DSP serial ports.
Recommandé
Automated Test Equipment (ATE) Card Digitizers
In ATE pin-cards and boundary-scan test fixtures, the TLC1541IFNG3's 11-channel MUX allows per-pin analog monitoring of DUT signals with 10-bit resolution and 32 kSPS sample rates. The on-chip sample-and-hold captures fast transients, and the serial output interfaces cleanly with rack-controller backplanes over a 4-wire bus. The PLCC socket-compatibility simplifies card-level field replacement during calibration cycles.
Recommandé
Battery Monitoring and Energy-Management Inputs
Battery management and energy-storage systems use the TLC1541IFNG3 to digitize per-cell voltage, pack current (across a shunt), and temperature sensors in a single IC. The 11-channel MUX accommodates 8-12 cell chemistries with auxiliary temperature inputs, and the 0-5.5 V input range (with 5 V supply) directly handles Li-ion cell voltages when used with external dividers. The serial output streams to a battery-management MCU over a 4-wire bus, reducing wiring harness complexity versus parallel ADCs.
Recommandé
Automotive Sensor Signal Conditioning Modules
Although the TLC1541IFNG3 is not AEC-Q100 qualified, it appears in non-safety automotive subsystems such as HVAC control modules, body controllers, and infotainment analog inputs where industrial-grade -40C to +85C operation suffices. The 10-bit resolution and 11-channel input support multiple sensor types (temperature, position, pressure) feeding a body-control MCU over SPI. Designers requiring AEC-Q100 grade 1 should evaluate TI's automotive-qualified SAR ADC family instead.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour TLC1541IFNG3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | TLC1541IFNR | TLC1541CFNG3 | TLC1541CFNR | TLC1541CDWRG4 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 20-PLCC (FN) 9x9 mm | 20-PLCC (FN) 9x9 mm - same | 20-PLCC (FN) 9x9 mm - same | 20-PLCC (FN) 9x9 mm - same | 20-SOIC (DW) wide-body - different footprint |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS |
| Analog Input Channels | 11 (10 ext + 1 self-test) | 11 | 11 | 11 | 11 |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C |
| Packaging Form | Tube | Tape and Reel | Tube | Tape and Reel | Tape and Reel (different package) |
| RoHS / Pb-Free | Yes (G3 suffix) | Yes | Yes | Yes | Yes |
| Pin-to-Pin Compatibility | Reference (TLC1541FN PLCC-20 base) | Identical - same PLCC-20 footprint | Identical - same PLCC-20 footprint | Identical - same PLCC-20 footprint | Different package (SOIC-20), pinout may differ - verify before swap |
Principaux différenciateurs
- Industrial temperature grade in standard PLCC-20 package (vs TLC1541CFNG3)
- Tube packaging for prototyping and low-volume builds (vs TLC1541IFNR)
- On-chip self-test channel for built-in diagnostics (vs TLC2543 (12-bit successor))
- Wide industrial supply tolerance + bipolar input mode (vs TLC1541CDWRG4 (SOIC package variant))
Notes de conception
Decouple both the analog +5 V supply (AVCC) and digital +5 V supply (DVCC) close to the IC with a 10 µF tantalum or ceramic bulk capacitor in parallel with a 0.1 µF ceramic high-frequency bypass. AGND and DGND should be tied at a single point under the IC (star-ground topology) to prevent digital switching noise from coupling into the analog sample-and-hold front-end. Estimated: at 32 kSPS conversion rate, each conversion draws transient current on AVCC, so a low-ESR bulk cap is mandatory.
Route analog input traces (AIN0-AIN10) as short, guarded differential pairs or directly over a continuous analog ground plane to minimize capacitive pickup from digital lines. Keep the serial interface traces (CS, I/O CLOCK, ADDRESS, EOC, DOUT) routed together and away from analog inputs; place a ground guard trace between the two groups on the PCB. The PLCC-20 (FN) package has J-leads that wrap under the body - leave clearance under the part for socket footprints if field replacement is needed.
Source impedance above 1 kΩ on analog input channels degrades linearity because the SAR input draws transient charge during the sample phase - add an external input buffer op-amp or keep source impedance below 600 Ω for full 10-bit accuracy. Do not exceed the absolute maximum analog input voltage (±15 V over-voltage, but continuous 0-5.5 V at 5 V supply) - higher voltages without external protection can damage the input multiplexer. The serial protocol is NOT a standard SPI - the host must drive CS manually and respect the EOC handshake.
The DOUT pin is a 3-state output that releases the bus when CS is high - ensure the host serial peripheral does not enable its pull-up or pull-down on the idle DOUT line, as this can cause bus contention with another device sharing the SPI bus. The I/O CLOCK input must remain stable for at least 50 ns after CS rising edge to allow the internal state machine to latch the address - use a short CS pulse and clock bursts for fastest scan rates.
The 20-PLCC (FN) package has a typical thermal resistance θJA of approximately 60-70 °C/W (per TI package datasheet). At maximum supply current of about 5 mA and 5 V supply, dissipation is 25 mW, giving a junction temperature rise of only 1.5 °C above ambient - thermal management is not a concern for this part. The industrial -40 °C to +85 °C operating range is bounded by silicon limits, not package thermal limits.
Informations de conformité
RoHS compliant per TI product page (G3 suffix denotes Pb-free green release). REACH compliant per TI material declaration. Not AEC-Q100 qualified - this part targets industrial, not automotive safety-critical designs. Conflict-minerals declaration available on TI.com.
