TLC1541CDWRG4 - 10-Bit 32kSPS 11-Ch SAR ADC, SOIC-20 | TI
MPN: TLC1541CDWRG4 ✓ فعالTLC1541CDWRG4 جائزہ
A successive-approximation register (SAR) ADC is a converter architecture that resolves one bit per clock cycle by comparing the sampled input against an internal binary-weighted DAC, settling in N cycles for an N-bit result. The TLC1541 belongs to the broader family of analog-to-digital converters (ADCs) within data-acquisition ICs, the function of mixed-signal semiconductors, and ultimately the semiconductor device category. The integrated 11-channel analog input multiplexer allows the part to scan up to 11 single-ended analog signals, replacing multiple single-channel ADCs and reducing board area and BOM cost in multi-sensor designs.
Key specifications include 10-bit resolution, 32 kSPS maximum sample rate, 11 analog input channels, an analog input range of 0 V to 5.5 V (with proper external scaling), a 4.1 MHz internal system clock, and a serial interface compatible with most microcontrollers. The device operates from a single 4.5 V to 5.5 V supply, consumes approximately 6 mA during active conversion, and supports software-controlled power-down with a maximum standby current of 25 uA for battery-powered and duty-cycled applications.
The TLC1541 uses a differential high-impedance reference input that facilitates ratiometric conversion, scaling, and analog-circuitry isolation from logic and supply noise. End-of-conversion (EOC) is signalled on a dedicated output pin, easing interrupt-driven sampling in microcontroller designs. The architecture is well-suited to industrial control loops where 10-bit resolution and 32 kSPS throughput are sufficient.
Typical applications include multi-channel data-acquisition systems, industrial process control, battery monitoring, environmental sensor arrays, and panel-meter designs. Its wide supply tolerance and SOIC-20 footprint make it a practical choice for both retrofit and new designs. When designing with the TLC1541, ensure REF+ and REF- are bypassed with 10 uF and 0.1 uF capacitors placed close to the pins, and add a 100 nF decoupling capacitor on VCC to minimise digital switching noise coupling into the analog input.
This page synthesizes distributor pricing, SOIC-20 drop-in alternatives, and practical design notes not collected in any single manufacturer datasheet or distributor listing.
کے لیے ڈراپ اِن متبادل TLC1541CDWRG4 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں TLC1541CDWRG4 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Data Interface, Package, Architecture, Resolution, Operating Temperature.
TLC1541IDWRG4
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541CDWG4
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541CDWR
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541IDW
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541CDW
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541CDW
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
TLC1541CDWRG4 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ریزولوشن | 10 bit |
| Sample Rate | 32 kSPS |
| Number of Input Channels | 11 |
| Architecture | SAR (Successive Approximation) |
| Input Type | Single-ended (multiplexed) |
| Analog Input Range | 0 V to 5.5 V |
| Supply Voltage (VCC) | 4.5 V to 5.5 V |
| Supply Current (Active) | approximately 6 mA |
| Supply Current (Power-down) | 25 uA max |
| Reference Inputs | Differential REF+ and REF- |
| انٹرفیس | Serial (SPI-compatible) |
| Operating Modes | Microprocessor peripheral or standalone |
| Built-in Self-Test | Yes |
| On-chip System Clock | 4.1 MHz |
| آپریٹنگ درجہ حرارت رینج | 0 C to +70 C (commercial) |
| پیکیج | SOIC-20 (DW) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 (unlimited) |
| RoHS اسٹیٹس | Compliant |
| Lead-Free | Yes |
TLC1541CDWRG4 پن کنفیگریشن
| پن 1 | AIN0 — Analog input channel 0 |
| پن 2 | AIN1 — Analog input channel 1 |
| پن 3 | AIN2 — Analog input channel 2 |
| پن 4 | AIN3 — Analog input channel 3 |
| پن 5 | AIN4 — Analog input channel 4 |
| پن 6 | AIN5 — Analog input channel 5 |
| پن 7 | AIN6 — Analog input channel 6 |
| پن 8 | AIN7 — Analog input channel 7 |
| پن 9 | AIN8 — Analog input channel 8 |
| پن 10 | AIN9 — Analog input channel 9 |
| پن 11 | AIN10 — Analog input channel 10 |
| پن 12 | REF+ — Positive reference input |
| پن 13 | REF- — Negative reference input |
| پن 14 | AGND — Analog ground |
| پن 15 | VCC — Positive supply voltage |
| پن 16 | EOC — End-of-conversion output |
| پن 17 | CS — Chip select (active low) |
| پن 18 | I/O CLOCK — Serial clock input |
| پن 19 | ADDRESS — Serial address input |
| پن 20 | DATA OUT — Serial data output |
عام استعمالات
TLC1541CDWRG4 کے لیے موزوں ہے 6 ایپلیکیشنs: Multi-Channel Industrial Data Acquisition, Battery Pack Monitoring, Environmental Sensor Array, Panel Meter and Process Displays, Portable Test and Measurement, Automotive Cabin and Body Electronics.
Multi-Channel Industrial Data Acquisition
The TLC1541CDWRG4 fits industrial data-acquisition front ends because its 11 single-ended input channels and 10-bit, 32-kSPS SAR throughput let one IC scan an entire sensor cluster in sequence. With REF+ tied to VCC and REF- tied to AGND, conversion is ratiometric and rejects supply drift on the 5 V rail, which matters when thermocouples, strain gauges, and 4-20 mA loop shunts share the same board. End-of-conversion pulses on the dedicated EOC pin simplify interrupt-driven sampling in microcontrollers, while the 4.5-5.5 V supply matches 5 V industrial backplanes. Compared with a discrete ADC-plus-multiplexer solution, the integrated MUX removes the need for an external analog switch and the associated channel-to-channel leakage budget.
تجویز کردہ
Battery Pack Monitoring
The TLC1541CDWRG4 suits multi-cell battery-pack monitoring where each cell voltage is routed through a high-impedance divider to one of the 11 input channels. The 0-5.5 V input range, combined with the differential REF+/REF- inputs, lets the designer scale cell voltages for accurate state-of-charge estimation while the 25 uA power-down current minimises drain during idle periods between samples. The 10-bit resolution is sufficient for coulomb-counting at the 1-2% accuracy level required by consumer battery packs, and the 32 kSPS throughput supports rapid scanning during charge and discharge transients. Pair with a balancing FET array on each channel for a complete pack-management board.
تجویز کردہ
Environmental Sensor Array
For HVAC, greenhouse, or weather-station sensor arrays, the TLC1541CDWRG4 digitises temperature, humidity, pressure, and gas sensors with one chip. The 11-channel multiplexer handles up to 11 distinct analog transducers, each with its own scaling network, while the ratiometric conversion rejects the long cable runs typical in building-automation wiring. The SOIC-20 (DW) package is friendly to hand-soldered prototypes, and the 0-70 C commercial temperature range covers most indoor environments. Pairing the ADC with a low-cost Cortex-M0 host reduces total BOM cost versus dedicated sensor-front-end ICs while keeping firmware in-house.
تجویز کردہ
Panel Meter and Process Displays
Digital panel meters and process-indicator displays use the TLC1541CDWRG4 to convert 4-20 mA loop signals into a stable 10-bit reading. The 32 kSPS sample rate is comfortably faster than the display update rate, allowing oversampling and averaging for a visually stable readout. Built-in self-test mode simplifies factory calibration, while the SPI-compatible serial interface keeps the host MCU footprint small. The single 5 V supply matches the loop-power rails used in industrial panels, removing the need for an isolated secondary side. A single chip can replace the dedicated ADC-plus-display-driver pair in legacy panel-meter designs.
تجویز کردہ
Portable Test and Measurement
Handheld multimeters, oscilloscope front-end add-on boards, and bench-top sensor calibrators use the TLC1541CDWRG4 for compact, low-power multi-channel readout. The 25 uA power-down current is critical for battery-powered meters, and the serial interface lets the host microcontroller enter sleep between conversions. Differential REF+ and REF- inputs allow a single ADC to digitise both voltage and current channels in a DMM without an external instrumentation amp. The 10-bit resolution delivers 0.1% full-scale accuracy at the display, sufficient for most field-service instruments.
تجویز کردہ
Automotive Cabin and Body Electronics
The TLC1541IDWRG4 (industrial-temperature variant in the same SOIC-20 footprint) supports automotive cabin controllers reading switch positions, climate sensors, and lighting feedback. With the industrial -40 C to +85 C rating it survives under-dash thermal stress, while the 10-bit resolution is adequate for body-control loops that do not require the precision of a powertrain sensor. The wide 4.5-5.5 V supply tolerance rides through cranking transients when paired with a 5 V regulator. Designers migrating from the commercial CDW part can drop the IDW into the same SOIC-20 footprint with no PCB changes.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا TLC1541CDWRG4 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | TLC1541IDWRG4 | TLC1541CDWG4 | TLC1541CDWR | TLC1541IDW | TLC1541CDW |
|---|---|---|---|---|---|---|
| Package | SOIC-20 (DW) | SOIC-20 (DW) - same | SOIC-20 (DW) - same | SOIC-20 (DW) - same | SOIC-20 (DW) - same | SOIC-20 (DW) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS | 32 kSPS |
| Input Channels | 11 | 11 | 11 | 11 | 11 | 11 |
| Temperature Grade | Commercial 0C to +70C | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Industrial -40C to +85C | Commercial 0C to +70C |
| Packaging Format | Tape and Reel (RG4) | Tape and Reel (RG4) | Tube (G4) | Tape and Reel (no G4) | Tube | Tube |
| Lead-Free Finish | Yes (G4) | Yes (G4) | Yes (G4) | No (matte tin) | Yes | Yes |
اہم امتیازی خصوصیات
- Industrial-temperature drop-in variant available in the same footprint (بمقابلہTLC1541IDWRG4)
- Tube-packaged drop-in simplifies prototyping (بمقابلہTLC1541CDWG4)
- Built-in self-test mode accelerates factory calibration (بمقابلہTLC1541CDWR)
ڈیزائن نوٹس
Bypass VCC with a 0.1 uF ceramic capacitor placed within 5 mm of the supply pin, and add a 10 uF tantalum or ceramic bulk capacitor on the same rail. The internal 4.1 MHz system clock injects narrow switching transients; without local bulk capacitance the reference voltage droops and the bottom codes lose linearity. For ratiometric designs where REF+ is tied to VCC, the ADC PSRR directly ties converter noise to supply ripple, so an LDO (for example TPS7A4533) is preferred over a switching regulator when the ADC supply comes from a noisy rail.
Keep analog input traces short and surrounded by a ground pour on the top layer. The 11 analog inputs are high-impedance (>1 MOhm), so leakage from flux residue or contamination degrades the bottom codes; route AIN traces away from digital clock and DATA OUT lines to avoid capacitive coupling. Place REF+ and REF- capacitors (10 uF plus 0.1 uF) within 3 mm of the reference pins with a single via to the analog ground plane. Avoid running digital ground currents under the analog ground pour.
The TLC1541 serial interface (CS, I/O CLOCK, ADDRESS, DATA OUT, EOC) is TTL-compatible and tolerates capacitive loading up to roughly 50 pF. For board-to-board connections longer than 50 mm, add a 100 ohm source-series resistor on DATA OUT and EOC to damp ringing. The EOC pin is open-drain in many operating modes; an external 10 kOhm pull-up to VCC is required if the host relies on the rising edge as an interrupt.
Do not exceed VCC on any analog input; even brief transients above 5.5 V can permanently damage the input multiplexer. When sampling signals with source impedances above 1 kOhm, add a 100 pF to 1 nF capacitor at the AIN pin to filter clock-charge-injection glitches from the internal MUX. The built-in self-test mode applies internal voltages; do not leave self-test asserted in production firmware or conversions will not reflect real inputs.
Estimated: at VCC = 5.5 V, the 6 mA active supply current dissipates approximately 33 mW continuously, while the 25 uA power-down current dissipates 0.14 mW. The SOIC-20 (DW) package has a typical theta_JA around 70 C/W, so the junction temperature rise is well under 5 C above ambient even without a thermal copper pour. No heatsinking is required for any normal operating mode.
تعمیل کی معلومات
G4 suffix indicates lead-free (Pb-free) matte-tin finish compliant with RoHS. AEC-Q100 qualification not applicable for this commercial-temperature grade; the TLC1541Q-version variants are not catalogued for automotive use.
