ADS1100A7IDBVRG4 - 16-Bit Self-Calibrating Delta-Sigma ADC | Texas Instruments
MPN： ADS1100A7IDBVRG4 ✗ 停產ADS1100A7IDBVRG4 概覽
An ADC (analog-to-digital converter) is an integrated circuit that converts continuous analog signals into discrete digital codes for processing by microcontrollers or DSPs. The delta-sigma (sigma-delta) architecture oversamples the input and uses noise-shaping to achieve high resolution and excellent noise rejection in low-frequency measurement applications such as sensor signal conditioning, industrial instrumentation, and portable measurement equipment.
Key features of the ADS1100A7IDBVRG4 include no missing codes at 16-bit resolution, INL of 0.0125% of FSR maximum, continuous self-calibration that eliminates offset and gain drift over time and temperature, single-cycle conversion settling, low noise of 4 microvolts peak-to-peak, and a low quiescent current of 90 microamps typical. The programmable data rate of 8, 16, 32, or 128 samples per second allows the user to trade resolution for speed.
The device integrates an oscillator, PGA, and I2C interface on-chip, eliminating the need for external components beyond bypass capacitors. The differential input topology rejects common-mode noise, making it well-suited for bridge sensors, thermocouples, and battery-cell monitoring. The internal clock and self-calibration simplify firmware and reduce long-term drift.
Typical applications include portable instrumentation, weigh scales, industrial process control, consumer temperature monitoring, and battery-powered sensor nodes. The SOT-23-6 footprint enables integration into space-constrained designs, while the I2C interface supports multi-device bus configurations for scalable measurement systems.
When designing with this part, note that the SOT-23-6 package requires careful PCB thermal management at higher data rates, and the I2C address is factory-programmed by part number suffix. Designers should consult the TI ADS1100 datasheet for the address selection options and self-calibration timing considerations.
This page synthesizes distributor pricing, drop-in alternatives from the ADS1100 family, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 ADS1100A7IDBVRG4 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADS1100A7IDBVRG4 （相同外形與佔位） — 差異在於 Resolution, Package, RoHS Status, Architecture, Data Rate.
ADS1100A0IDBVR
✅ 直接替換📋 參考替代品（不在目錄中）
ADS1100A7IDBVR
✅ 直接替換📋 參考替代品（不在目錄中）
ADS1100A7IDBVT
✅ 直接替換📋 參考替代品（不在目錄中）
ADS1100A5IDBVRG4
✅ 直接替換聯絡詢價
查看資料表 →ADS1100A1IDBVR
✅ 直接替換📋 參考替代品（不在目錄中）
ADS1100A7IDBVRG4 最大額定值與電氣特性
| 解析度 | 16 bits, no missing codes |
| Number of Input Channels | 1 differential |
| Architecture | Delta-Sigma (Sigma-Delta) |
| 資料速率 | 8 / 16 / 32 / 128 SPS (programmable) |
| Programmable Gain | 1, 2, 4, 8 (PGA) |
| INL (Max) | 0.0125% of FSR |
| 輸出雜訊 | 4 uVp-p |
| Input Type | Differential |
| 供應電壓 | 2.7 V to 5.5 V |
| Reference | Ratiometric (uses VDD) |
| 介面 | I2C-compatible, 2-wire serial |
| 靜態電流 | 90 uA typical |
| Self-Calibration | Continuous, automatic |
| 工作溫度 | -40 C to +85 C |
| 封裝 | SOT-23-6 (DBV) |
| 安裝類型 | Surface Mount |
| Conversion Mode | Single-cycle settling |
| RoHS 狀態 | Compliant (G4 suffix indicates lead-free) |
ADS1100A7IDBVRG4 腳位配置
| 腳位 1 | VDD — Power supply (2.7V to 5.5V) |
| 腳位 2 | GND — Ground |
| 腳位 3 | SCL — I2C serial clock input |
| 腳位 4 | SDA — I2C serial data (bidirectional) |
| 腳位 5 | AIN0 — Positive differential analog input |
| 腳位 6 | AIN1 — Negative differential analog input |
典型應用
ADS1100A7IDBVRG4 適用於 6 應用s: Portable Weigh Scale, Industrial Process Control Sensor, Battery-Powered Temperature Monitor, Consumer Thermostat Sensor Front-End, Portable Medical Measurement Device, IoT Environmental Sensor Node.
Portable Weigh Scale
The ADS1100A7IDBVRG4's 16-bit resolution with 0.0125% INL and integrated PGA (gain up to 8x) make it ideal for load cell signal conditioning in portable weigh scales. Its 4 uVp-p noise floor preserves measurement accuracy at microvolt-level bridge outputs, while the differential input rejects common-mode noise from motor and display circuits. The 90 uA quiescent current extends battery life, and the I2C interface enables direct connection to a microcontroller without external glue logic. According to TI ADS1100 datasheet, the continuous self-calibration eliminates offset drift over temperature.
推薦
Industrial Process Control Sensor
For industrial pressure, flow, or temperature transmitters, the ADS1100A7IDBVRG4 delivers reliable 16-bit measurements with programmable data rates up to 128 SPS. The differential input topology rejects common-mode noise from 4-20 mA loops and motor drive circuits typical in factory environments. According to TI ADS1100 datasheet, the 2.7V-5.5V supply range and ratiometric conversion simplify design with bridge sensors. The SOT-23-6 footprint enables compact module designs suitable for DIN-rail transmitter packages.
推薦
Battery-Powered Temperature Monitor
The ADS1100A7IDBVRG4's 90 uA quiescent current and single-supply operation from 2.7V to 5.5V suit battery-powered thermocouple and RTD temperature monitoring nodes. The integrated PGA amplifies low-level sensor outputs directly, eliminating external instrumentation amplifiers and reducing BOM cost. According to TI ADS1100 datasheet, the continuous self-calibration maintains accuracy over the -40 C to +85 C operating range. The I2C interface supports multi-channel systems by sharing a single bus with multiple ADC instances.
推薦
Consumer Thermostat Sensor Front-End
Smart thermostat designs benefit from the ADS1100A7IDBVRG4's small SOT-23-6 footprint and direct connection to thermistor or RTD bridges. The differential input rejects 50/60 Hz line noise common in HVAC environments, while the programmable data rate lets designers optimize for update speed vs power. According to TI ADS1100 datasheet, the 4 uVp-p noise ensures stable temperature readings without flicker. The I2C interface integrates seamlessly with Wi-Fi or BLE-enabled thermostat controllers.
推薦
Portable Medical Measurement Device
Blood pressure monitors, pulse oximeters, and handheld diagnostic equipment use the ADS1100A7IDBVRG4 to digitize pressure sensor and bioelectric signals with 16-bit precision. The low 90 uA quiescent current extends battery life in portable medical devices, while the differential input rejects common-mode interference from patient cables and ESD events. According to TI ADS1100 datasheet, the self-calibration ensures measurement stability over the device's operating life without periodic user recalibration.
推薦
IoT Environmental Sensor Node
Wireless sensor nodes for indoor air quality, soil moisture, or weather monitoring leverage the ADS1100A7IDBVRG4's compact SOT-23-6 package and low-power operation. The I2C interface allows multiple sensor types to share a single bus with the wireless MCU, reducing pin count and PCB area. According to TI ADS1100 datasheet, the programmable gain amplifier handles diverse sensor output ranges from soil moisture probes to gas sensor bridges without external signal conditioning.
推薦
推薦產品摘要
工程參考資料，適用於 ADS1100A7IDBVRG4 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADS1100A0IDBVR | ADS1100A7IDBVR | ADS1100A7IDBVT | ADS1100A5IDBVRG4 | ADS1100A1IDBVR |
|---|---|---|---|---|---|---|
| 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 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit |
| I2C Address Suffix | A7 | A0 | A7 | A7 | A5 | A1 |
| Reel Packaging | Tape & Reel (G4, lead-free) | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel (G4) | Tape & Reel |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V |
| Input Channels | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential | 1 differential |
主要差異化特點
- I2C address suffix A7 for multi-device bus designs (對比ADS1100A0IDBVR)
- Lead-free G4 packaging suffix (對比ADS1100A7IDBVR (non-G4))
- Integrated oscillator eliminates external clock (對比ADS1110 (external clock option))
設計說明
Place the 0.1 uF VDD bypass capacitor as close as possible to pin 1 (VDD) and pin 2 (GND) of the SOT-23-6 package. Use a low-ESR ceramic capacitor (X7R or X5R dielectric) to suppress high-frequency noise from the digital I2C lines and improve conversion stability. According to TI ADS1100 datasheet layout guidelines, keep analog and digital ground returns separated to avoid ground loop noise coupling into the measurement.
The ADS1100A7IDBVRG4 performs ratiometric conversions using VDD as the reference. To maximize measurement accuracy, ensure the analog input signal and VDD share a common, low-impedance source. According to TI ADS1100 datasheet, ratiometric operation eliminates the need for a precision external voltage reference but requires stable VDD to achieve rated INL and noise specifications.
The I2C slave address is factory-programmed by part number suffix (A0, A1, A2, A3, A4, A5, A6, A7). According to TI ADS1100 datasheet, verify the firmware selects the correct address before substituting a different suffix part. Mixing suffixes on the same I2C bus causes address collisions unless the firmware dynamically detects device addresses. Also ensure SDA and SCL lines have proper pull-up resistors (typically 4.7 kOhm to 10 kOhm depending on bus capacitance).
合規資訊
G4 suffix indicates lead-free RoHS-compliant packaging per TI ordering information. Not AEC-Q100 qualified - this part is targeted at industrial and consumer applications, not automotive.