TLV1504IDRG4 - 10-Bit 200kSPS 4-Ch SAR ADC | Texas Instruments
MPN: TLV1504IDRG4 ✓ نشطTLV1504IDRG4 نظرة عامة
What is a SAR ADC? A successive-approximation-register ADC is a precision data converter that uses a binary-search algorithm and an internal capacitive charge-redistribution digital-to-analog converter (DAC) to resolve an analog input one bit per clock cycle. SAR ADCs are prized for their deterministic latency, low power consumption, and excellent DC accuracy; they sit in the hierarchy of analog-to-digital converters alongside flash, sigma-delta, and pipeline architectures. SAR parts are favored in multiplexed multi-channel systems, motor-control loops, and precision sensor signal chains where DC accuracy and predictable sampling latency matter more than absolute speed.
Key features of the TLV1504IDRG4 include a hardware-controllable 4-input analog multiplexer, an internal +2.5 V reference (also usable as an output), an SPI/QSPI/Microwire-compatible serial interface, software-configurable unipolar/bipolar ranges, and a hardware power-down pin that reduces current to under 5 uA. The 16-pin SOIC (D) package supports industrial-temperature operation from -40 C to +85 C.
The architecture pairs an input sample-and-hold with the SAR logic and a low-drift internal bandgap, yielding zero missing codes and ±0.5 LSB typical INL/DNL. The wide 2.7 V to 5.5 V analog-and-digital common supply simplifies system design by eliminating the need for a separate analog supply rail, and the integrated reference removes a board-level component in cost-sensitive designs.
Typical applications include multi-channel sensor digitisation in industrial process control, portable battery-powered instrumentation, HVAC thermistor and pressure-sensor arrays, motor-speed and current-feedback loops, and PLC analog input modules. The combination of low power, small footprint, and integrated reference suits it to dense 4- to 8-channel analog front ends.
When designing with this ADC, decouple AVDD and DVDD separately with 0.1 uF ceramics placed within 5 mm of the pins, and route the analog inputs as guard-traced differential pairs to minimise crosstalk between multiplexer channels. Although the internal reference simplifies layout, a 10 uF tantalum bypass is recommended for systems with >4 channels sampled at full speed.
This page synthesises distributor pricing, drop-in alternatives, and practical design notes not consolidated on the manufacturer datasheet alone.
بدائل مباشرة لـ TLV1504IDRG4 — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع TLV1504IDRG4 (نفس عامل الشكل والبصمة) — يختلف في Package, Resolution, Analog Supply Voltage, Digital Supply Voltage, Input Type.
TLV1504ID
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←TLV1504IDR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←TLV1508IDW
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TLV1544IDR
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
TLV2544IDR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
TLV1504IDRG4 الحدود القصوى والخصائص الكهربائية
| الدقة | 10 bit |
| معدل أخذ العينات | 200 kSPS |
| Number of Channels | 4 |
| Architecture | SAR (Successive Approximation Register) |
| Input Type | Single-ended / Pseudo-differential |
| Supply Voltage (AVDD/DVDD) | 2.7 V to 5.5 V |
| Analog Input Range | 0 V to AVDD (software-configurable bipolar) |
| Internal Reference | +2.5 V |
| INL (typical) | ±0.5 LSB |
| DNL (typical) | ±0.5 LSB |
| Power Consumption | 1.5 mW at 3 V, 200 kSPS |
| Power-Down Current | <5 uA |
| الواجهة | SPI / QSPI / Microwire-compatible serial |
| درجة حرارة التشغيل | -40 C to +85 C (industrial) |
| العلبة | 16-pin SOIC (D) |
| نوع التركيب | Surface Mount |
| مستوى MSL | 1 (unlimited floor life at <30 C / 85% RH) |
| حالة RoHS | Compliant |
تكوين أطراف TLV1504IDRG4
| دبوس 1 | AIN0/REF- — Analog input channel 0 / external reference negative |
| دبوس 2 | AIN1 — Analog input channel 1 |
| دبوس 3 | AIN2 — Analog input channel 2 |
| دبوس 4 | AIN3/REF+ — Analog input channel 3 / external reference positive |
| دبوس 5 | GND — Ground |
| دبوس 6 | DVDD — Digital supply voltage |
| دبوس 7 | SCLK — Serial clock for SPI interface |
| دبوس 8 | DOUT — Serial data output from ADC |
| دبوس 9 | DIN — Serial data input to ADC configuration register |
| دبوس 10 | CS — Chip-select (active low) for SPI bus |
| دبوس 11 | PD — Hardware power-down input (active low) |
| دبوس 12 | AVDD — Analog supply voltage |
| دبوس 13 | REF — +2.5 V internal reference output / bypass node |
| دبوس 14 | REFIN — Reference voltage input for external reference mode |
| دبوس 15 | NC — Not connected (no internal bond) |
| دبوس 16 | NC — Not connected (no internal bond) |
التطبيقات النموذجية
TLV1504IDRG4 مناسب لـ 6 التطبيقs: Multi-Channel Industrial Sensor Digitisation, Portable Battery-Powered Instrumentation, HVAC Thermistor and Pressure-Sensor Arrays, Motor Speed and Current Feedback Loops, PLC Analog Input Modules, Data-Acquisition Cards and USB Modules.
Multi-Channel Industrial Sensor Digitisation
The TLV1504IDRG4's 4-channel multiplexer and 10-bit resolution make it ideal for digitising multiple analog sensors in industrial process-control modules. Its 200-kSPS sampling rate comfortably exceeds the bandwidth requirement of thermocouple, RTD, and 4-20 mA current-loop front ends, while the integrated +2.5 V reference removes the cost of an external reference IC. Power dissipation is 1.5 mW at 3 V, 200 kSPS, enabling dense multi-channel analog input modules without active cooling. The 16-pin SOIC footprint is shared with many TI industrial ADC siblings, simplifying layout reuse across product variants. Companion components include an OPA2171 op-amp for input buffering and a TPS7A4533 LDO for clean analog rail generation.
موصى به
Portable Battery-Powered Instrumentation
Battery-powered handheld instruments such as digital multimeters and portable environmental monitors benefit from the TLV1504IDRG4's 1.5 mW power consumption and <5 uA hardware power-down current. The wide 2.7 V to 5.5 V supply range supports direct operation from a single Li-ion cell (3.0 V to 4.2 V) or two AA cells, eliminating boost regulators. The integrated +2.5 V reference and small 16-pin SOIC package reduce BOM cost and PCB area in space-constrained handheld enclosures. SPI/QSPI/Microwire serial interface compatibility allows connection to low-cost microcontrollers with minimal pin count. Recommended companions include an MSP430 microcontroller for low-power MCU control and a TPS62230 step-down converter for system rails.
موصى به
HVAC Thermistor and Pressure-Sensor Arrays
HVAC systems frequently require 4- to 8-channel temperature and pressure monitoring, which the TLV1504IDRG4 addresses by offering 4 multiplexed inputs with software-configurable unipolar/bipolar ranges. Its 200-kSPS throughput is well above the Nyquist requirement for thermal-sensor bandwidth (<10 Hz), and the integrated reference removes drift concerns over industrial temperature ranges. The 4 channels map naturally to supply-air, return-air, mixed-air, and outdoor-air temperature sensing. The SOIC-16 package is well suited to the conformal-coated PCB environment typical of HVAC controllers. Recommended companions include NTC thermistor networks for temperature sensing and a Tiva C-series MCU for HVAC controller integration.
موصى به
Motor Speed and Current Feedback Loops
The TLV1504IDRG4's deterministic SAR latency and 200-kSPS throughput suit closed-loop motor control applications where predictable sampling latency matters more than raw speed. Two of the four channels can be configured for pseudo-differential input, allowing direct measurement of shunt-resistor voltage drops in brushed-DC and stepper-motor current loops. The remaining channels can digitise back-EMF or position feedback signals. The wide supply range supports 3.3 V and 5 V system designs, and the small SOIC-16 package fits dense motor-driver PCBs. Recommended companions include a DRV8871 motor driver and an INA180 current-sense amplifier for shunt-resistor buffering.
موصى به
PLC Analog Input Modules
Programmable logic controller (PLC) analog input modules require 4- to 8-channel, isolated or non-isolated ADC front ends that digitise 0-10 V or 4-20 mA process signals. The TLV1504IDRG4 fits this application with its 4-channel multiplexer, software-configurable input ranges, and SPI interface that integrates with backplane serial buses. The 200-kSPS throughput supports multiple input-module channels time-multiplexed onto a single ADC, reducing BOM cost versus per-channel ADCs. The industrial -40 C to +85 C temperature range and RoHS-compliant SOIC-16 package meet the environmental and regulatory requirements of factory-floor PLC designs. Recommended companions include an ISO7741 isolator for backplane isolation and a TRS202E RS-232 line driver.
موصى به
Data-Acquisition Cards and USB Modules
USB-connected data-acquisition modules and PC-side digitiser cards benefit from the TLV1504IDRG4's low pin count (16-pin SOIC) and SPI interface that connects directly to USB-to-SPI bridge chips such as the FT2232H or MCP2210. The 200-kSPS throughput supports general-purpose lab digitisation up to 100 kHz signal bandwidth when oversampling, and the 4-channel multiplexer allows simultaneous monitoring of multiple test points. The integrated +2.5 V reference removes a precision external reference, simplifying the BOM for cost-sensitive educational and hobbyist DAQ modules. Recommended companions include an FT2232H USB-SPI bridge and an OPA2171 op-amp for input signal conditioning.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ TLV1504IDRG4 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | TLV1504ID | TLV1504IDR | TLV1508IDW | TLV1544IDR | TLV2544IDR |
|---|---|---|---|---|---|---|
| Package | 16-pin SOIC (D) | 16-pin SOIC (D) - same | 16-pin SOIC (D) - same | 16-pin SOIC (D) - same | 16-pin SOIC (D) - same | 16-pin SOIC (D) - 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 | 12 bit |
| Sampling Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS |
| Number of Channels | 4 | 4 | 4 | 8 | 4 | 4 |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Internal Reference | +2.5 V | +2.5 V | +2.5 V | +2.5 V | +2.5 V | +2.5 V |
| Interface | SPI/QSPI/Microwire | SPI/QSPI/Microwire | SPI/QSPI/Microwire | SPI/QSPI/Microwire | SPI/QSPI/Microwire | SPI/QSPI/Microwire |
| Power Consumption | 1.5 mW at 3 V | 1.5 mW at 3 V | 1.5 mW at 3 V | 1.5 mW at 3 V | 1.5 mW at 3 V | 3.6 mW at 3 V (12-bit penalty) |
أبرز الفروقات
- Lower cost than 12-bit TLV2544 alternative (مقابلTLV2544IDR)
- Higher channel count upgrade on same footprint (مقابلTLV1508IDW)
- True pin-compatible industrial temp range (مقابلTLV1504ID (tube version))
ملاحظات التصميم
Decouple AVDD and DVDD separately with 0.1 uF ceramic capacitors placed within 5 mm of the supply pins. Although the analog and digital rails share a common 2.7 V to 5.5 V source, separate bypass capacitors prevent digital switching noise from coupling into the analog sampling path. Add a 10 uF tantalum or ceramic bulk capacitor on the supply rail to suppress transient current spikes during SCLK transitions.
Route the analog input traces as guard-traced pseudo-differential pairs when possible, and keep them away from digital output traces (DOUT, SCLK) to minimise crosstalk. The reference bypass capacitor on the REF pin should be a low-ESR 10 uF ceramic placed within 2 mm of the REF pin. If using an external reference instead, keep REFIN traces short and shield them with a ground pour to avoid reference-noise pickup.
Do not leave the PD pin floating - tie it to DVDD through a 100 kohm pull-up if not driven, because an undriven PD pin can drift into the partial-power-down state and cause spurious conversion results. When using the internal +2.5 V reference, ensure the REFIN pin is connected to a clean analog ground; leaving it floating can inject reference noise into the sample-and-hold. Finally, observe the maximum input current on analog input pins (typically 5 mA) during overvoltage events - add external clamping diodes if the input can exceed AVDD by more than 0.3 V.
The TLV1504IDRG4's SPI bus is sensitive to long SCLK traces above 50 mm, especially at the maximum 200-kSPS throughput. Add a 33 ohm series-termination resistor at the SCLK source if the trace is longer than 25 mm to dampen ringing. Use the CS pin to frame each conversion explicitly; do not rely on continuous-clock mode if your MCU's SPI peripheral supports it, because the SAR converter expects a defined frame boundary per acquisition.
معلومات الامتثال
RoHS compliant per TI product page. The G4 suffix on the part number confirms the lead-free finish. Not AEC-Q100 qualified - choose a Q1-suffix automotive variant if required for automotive applications. Halogen-free designation not explicitly stated in TI product literature; refer to the latest Material Declaration Sheet from TI for confirmation.