ADS1100A5IDBVRG4 - 16-Bit Self-Calibrating Sigma-Delta ADC | TI
MPN: ADS1100A5IDBVRG4 ✗ Cuối đờiADS1100A5IDBVRG4 Tóm tắt
An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog voltage signals into discrete digital codes for processing by microcontrollers or DSPs. Delta-sigma (sigma-delta) ADCs use oversampling and noise shaping to achieve high resolution at low data rates, making them ideal for precision DC measurement applications such as industrial sensors, weigh scales, and temperature monitoring. Within the power management and signal chain hierarchy, the ADS1100 belongs to data acquisition ICs -> ADCs -> delta-sigma ADCs -> precision measurement converters.
Key features include continuous self-calibration that corrects internal drift on every conversion, a single-cycle conversion mode for low-latency readings, and a programmable gain amplifier with gain of 8x that allows small sensor signals to be digitized directly without external amplification. The internal oscillator eliminates the need for an external clock, and the I2C interface simplifies connection to microcontrollers with only two wires.
The architecture combines a delta-sigma modulator with a digital filter providing simultaneous 50Hz and 60Hz line rejection at the 8/16/32/128 SPS data rate selections. The self-calibration mechanism performs both offset and gain correction continuously, ensuring the 16-bit no-missing-codes performance is maintained across the operating range without user intervention. Conversions are performed ratiometrically using the power supply as the reference voltage, simplifying external circuit design.
Typical applications include portable instrumentation, weigh scales, industrial process control, temperature and pressure sensor digitizers, battery management monitors, and consumer measurement products where PCB space is constrained. The SOT-23-6 footprint is among the smallest 16-bit ADC packages available, enabling single-board designs where board real estate is critical.
When designing with this device, choose appropriate data rate vs. noise trade-off: 8 SPS gives best noise performance for thermocouple or weigh-scale signals, while 128 SPS enables faster response for general-purpose monitoring. Decouple VDD with 100nF close to the pin. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho ADS1100A5IDBVRG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS1100A5IDBVRG4 (cùng hình factor và footprint) — khác nhau ở Reference, Resolution, Architecture, RoHS Status, Conversion Mode.
ADS1100A5IDBVTG4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS1100A5IDBVR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS1100A0IDBVR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS1100A6IDBVR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS1110A0IDBVR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCP3421A0T-E/CH
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS1100A5IDBVRG4 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Number of Channels | 1 Input |
| Architecture | Sigma-Delta |
| Tốc độ dữ liệu | 8/16/32/128 SPS (selectable) |
| Supply Voltage Range | 2.7 V to 5.5 V |
| INL (max) | 0.0125% of FSR |
| No Missing Codes | 16 bits guaranteed |
| Phạm vi điện áp đầu vào | GND to VDD (ratiometric) |
| Programmable Gain | 1, 2, 4, 8 (PGA) |
| Noise | 4 uVp-p |
| Giao diện | I2C-compatible (2-wire, up to 400 kHz) |
| Reference | Internal (ratiometric to VDD) |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | SOT-23-6 (DBV) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (unlimited) |
| Trạng thái RoHS | Compliant |
| Self-Calibration | Continuous, automatic |
Cấu hình chân ADS1100A5IDBVRG4
| Chân 1 | VDD — Power supply input (2.7V to 5.5V) |
| Chân 2 | GND — Ground reference |
| Chân 3 | SDA — I2C serial data (bidirectional, open-drain; requires external pull-up to VDD) |
| Chân 4 | SCL — I2C serial clock input (requires external pull-up to VDD) |
| Chân 5 | VIN+ — Differential analog input positive |
| Chân 6 | VIN- — Differential analog input negative |
Ứng dụng tiêu biểu
ADS1100A5IDBVRG4 phù hợp cho 6 Áp dụngs: Portable Weigh Scales, Industrial Process Control Sensors, Thermocouple Temperature Measurement, Battery Monitoring & Management, Portable Medical Instrumentation, Consumer Sensor Hubs.
Portable Weigh Scales
The ADS1100A5IDBVRG4's 16-bit no-missing-codes performance and integrated PGA with 8x gain make it ideal for digitizing load cell bridge outputs in portable weigh scales. With PGA gain of 8 and the 0.0125% INL max, the device resolves sub-gram weight changes from a 1kg full-scale bridge. The 8 SPS data rate mode with built-in 50/60Hz line rejection eliminates motor and AC mains noise that would otherwise corrupt readings. Power consumption scales with data rate, enabling battery operation across thousands of measurements.
Được đề xuất
Industrial Process Control Sensors
For 4-20mA loop-powered pressure, flow, and level transmitters, the ADS1100A5IDBVRG4 provides the precision and noise rejection required for industrial process control. The 0.0125% INL max combined with the PGA's selectable gains (1/2/4/8) allows digitizing 0-100mV bridge outputs directly, while the internal ratiometric reference architecture tracks the loop supply for high rejection of common-mode disturbances. The SOT-23-6 footprint reduces board area, enabling compact sensor head designs.
Được đề xuất
Thermocouple Temperature Measurement
The ADS1100A5IDBVRG4 paired with a thermocouple front-end provides sub-degree-Celsius temperature measurement for HVAC, industrial ovens, and laboratory instruments. At the 8 SPS data rate, the device's low 4 uVp-p noise enables K-type thermocouple measurements with ~0.1C resolution after cold-junction compensation. The integrated PGA with 8x gain accommodates the typical 40 uV/C thermocouple output without external amplification, reducing BOM cost and PCB area. I2C interface simplifies integration with industrial MCUs.
Được đề xuất
Battery Monitoring & Management
The ADS1100A5IDBVRG4's ratiometric operation from a 2.7V-5.5V supply and integrated PGA make it ideal for cell-by-cell battery voltage and current monitoring in BMS designs. The internal ADC uses VDD as reference, so cell voltages scale ratiometrically as the battery discharges, simplifying calibration. The 16-bit resolution resolves 1mV changes from a 4.2V Li-ion cell, while the 8 SPS mode with 50/60Hz rejection rejects switching noise from adjacent power converters. The SOT-23-6 footprint fits densely packed battery packs.
Được đề xuất
Portable Medical Instrumentation
The ADS1100A5IDBVRG4's low 4 uVp-p noise, 16-bit resolution, and SOT-23-6 small footprint suit portable medical devices such as glucose meters, pulse oximeters, and ambulatory ECG monitors. The integrated PGA amplifies small biopotential signals directly, while the 8 SPS data rate provides simultaneous 50/60Hz mains rejection critical for clean ECG/EEG traces. The I2C interface draws only a few hundred microamps during active conversion, extending battery life in wearable designs.
Được đề xuất
Consumer Sensor Hubs
The ADS1100A5IDBVRG4 provides precision analog measurement for consumer sensor hubs integrating strain, temperature, humidity, and gas sensors into a single product. The integrated PGA accommodates the wide dynamic range of sensor outputs (mV to V) without external signal conditioning. The 128 SPS maximum data rate enables responsive feedback in interactive products, while the 8 SPS low-noise mode supports overnight logging on battery power. The tiny SOT-23-6 footprint enables integration into wearable and IoT devices.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS1100A5IDBVRG4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADS1100A5IDBVTG4 | ADS1100A5IDBVR | ADS1100A0IDBVR | ADS1100A6IDBVR | ADS1110A0IDBVR | MCP3421A0T-E/CH |
|---|---|---|---|---|---|---|---|
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 (DBV) - same | SOT-23-6 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 18 bit (+2 bit higher) |
| Data Rate (max) | 128 SPS | 128 SPS | 128 SPS | 128 SPS | 128 SPS | 60 SPS (slower) | 60 SPS |
| PGA Gain | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 | 1, 2, 4, 8 |
| I2C Address (default) | 0x48 (A5 variant) | 0x48 | 0x48 | 0x48 | 0x4B | 0x48 | 0x68 (different) |
| Reference | Ratiometric (VDD) | Ratiometric | Ratiometric | Ratiometric | Ratiometric | Internal 2.048V | Internal 2.048V |
| Lifecycle | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active | Active |
Bảo phân biệt quan trọng
- Tiny SOT-23-6 footprint with full 16-bit precision ADC (vsMCP3421A0T-E/CH)
- Active drop-in replacement path via ADS1110 family (vsADS1100 family (all variants obsolete))
- Programmable PGA eliminates external amplifier BOM (vsExternal op-amp + discrete ADC)
Ghi chú thiết kế
Decouple VDD (pin 1) with a 100nF X7R ceramic capacitor placed within 5mm of the pin and a 1uF bulk capacitor at the board power entry. Because conversions are ratiometric to VDD, supply noise couples directly into measurements - use a linear regulator (e.g., TI TPS7A4533) rather than a switching regulator for the ADC supply in precision applications. For battery-powered designs, the ratiometric operation tracks VDD droop, simplifying software calibration. Estimated: at 128 SPS the device draws a few hundred microamps; check datasheet IDD spec for thermal design.
Route the differential input pair (VIN+ / VIN-, pins 5/6) as a matched-length differential pair with ground guard traces to minimize common-mode noise pickup. Place the input RC anti-aliasing filter (typically 1kohm + 10nF) within 3mm of the input pins - the filter cutoff should be set well below the modulator sample rate (typically ~256kHz internal). Avoid routing digital lines (SDA/SCL) parallel to the analog input traces; cross them at 90 degrees if layer transitions are necessary.
Do not exceed the input common-mode range of GND to VDD - signals outside this range damage the input ESD structures. The effective number of bits (ENOB) drops at faster data rates; for weigh-scale or thermocouple measurements, always select 8 SPS for best noise performance. The I2C address is fixed at 0x48 (A5 variant) - if address conflicts arise on the same bus, use the ADS1110/ADS1115 family which offer programmable addresses. Do not leave SDA or SCL floating; both lines require pull-up resistors to VDD per I2C specification.
The SOT-23-6 package has a thermal resistance theta_JA of approximately 200 C/W, but because the ADS1100 dissipates only a few milliwatts, thermal concerns are negligible for normal operation. Estimated: at 5V VDD and 200uA supply current, dissipation is ~1mW, giving a junction temperature rise well below 1C above ambient. No heatsink or thermal copper pour is required; however, follow standard SOT-23 reflow profile (peak 260C per JEDEC J-STD-020) for assembly.
Thông tin tuân thủ
RoHS compliant per TI product page and distributor listings. Not AEC-Q100 qualified - automotive designs should use a qualified alternative. Halogen-free per TI product specification. Lifecycle status: obsolete as of 2026-10-12 per DigiKey listing.