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ADS1118IDGSR
Texas Instruments
IC ADC 16BIT SIGMA-DELTA 10VSSOP
12732 Pcs New Original In Stock
16 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-VSSOP
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5.0 / 5.0
- (405 Ratings)
ADS1118IDGSR
Product Overview
1263348
DiGi Electronics Part Number
ADS1118IDGSR-DGManufacturer
Texas Instruments
ADS1118IDGSR
Description
IC ADC 16BIT SIGMA-DELTA 10VSSOPInventory
12732 Pcs New Original In Stock
16 Bit Analog to Digital Converter 2, 4 Input 1 Sigma-Delta 10-VSSOP
Quantity
Minimum 1
Minimum 1
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ADS1118IDGSR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
16
Sampling Rate (Per Second)
860
Number of Inputs
2, 4
Input Type
Differential, Single Ended
Data Interface
SPI
Configuration
MUX-PGA-ADC
Ratio - S/H:ADC
-
Number of A/D Converters
1
Architecture
Sigma-Delta
Reference Type
Internal
Voltage - Supply, Analog
2V ~ 5.5V
Voltage - Supply, Digital
2V ~ 5.5V
Features
PGA, Temperature Sensor
Operating Temperature
-40°C ~ 125°C
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package
10-VSSOP
Mounting Type
Surface Mount
Base Product Number
ADS1118
Datasheet & Documents
Manufacturer Product Page
ADS1118IDGSR Specifications
HTML Datasheet
ADS1118IDGSR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-38850-1
296-38850-2
ADS1118IDGSR-DG
296-38850-6
Standard Package
2,500
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
구매 후에도 지속적으로 관심을 가지고 피드백에 신속하게 대응해주는 서비스가 인상적입니다.
de desembre 02, 2025
J’apprécie vraiment leur politique de prix et leur initiative pour des emballages plus verts.
de desembre 02, 2025
Une adresse incontournable pour ceux qui cherchent des prix faibles et un accueil chaleureux.
de desembre 02, 2025
迅速な配送と明瞭な料金体系に感謝しています。非常に信頼しています。
de desembre 02, 2025
Their proactive approach to customer care makes it easy for us to maintain long-term collaborations.
de desembre 02, 2025
The packaging is durable and ensures products are protected from damage.
de desembre 02, 2025
First-time buyer here, and I am fully satisfied with their prompt and efficient service.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the ADS1118IDGSR in a high-noise industrial environment, and how can I mitigate them despite its internal reference and PGA?
The ADS1118IDGSR’s internal voltage reference (2.048 V typical) and integrated PGA simplify design but introduce sensitivity to power supply noise and ground loops in industrial settings. Because the reference is internal and not bypassed externally, any ripple on the analog supply (2V–5.5V) directly affects conversion accuracy. To mitigate this, use a dedicated low-noise LDO (e.g., TPS7A4700) for the ADS1118IDGSR, implement a solid ground plane with star grounding near the ADC, and add a 100 nF ceramic capacitor plus a 10 µF tantalum capacitor close to the AVDD pin. Additionally, route analog input traces away from digital lines and use shielded twisted pairs for remote sensors to reduce EMI coupling into the differential inputs.
Can I replace the ADS1118IDGSR with the ADS1115IDGSR in an existing 4-channel data acquisition design without firmware changes?
While the ADS1115IDGSR is electrically similar and pin-compatible with the ADS1118IDGSR, direct replacement may require firmware updates due to functional differences. The ADS1118IDGSR includes an integrated temperature sensor and supports continuous-conversion mode, whereas the ADS1115IDGSR lacks the temperature sensor and only supports single-shot mode by default. If your application relies on real-time temperature monitoring or expects continuous sampling, the ADS1115IDGSR will not behave identically. Additionally, the configuration register bitmaps differ slightly—verify command sequences in your SPI driver. For drop-in compatibility without code changes, stick with the ADS1118IDGSR; otherwise, update firmware to handle mode transitions and remove temperature-read logic.
How does the ADS1118IDGSR’s 860 SPS sampling rate impact resolution and noise performance in precision sensor applications like strain gauges or RTDs?
At the ADS1118IDGSR’s maximum data rate of 860 SPS, the effective resolution drops compared to lower speeds due to increased broadband noise and reduced oversampling. For high-precision applications like RTD or strain gauge measurements, where microvolt-level signals are common, operating at 860 SPS may yield only ~14–15 effective bits instead of the nominal 16 bits. To maximize accuracy, reduce the data rate to 128 SPS or lower—this increases oversampling and significantly improves noise performance (ENOB). Combine this with the internal PGA set to gain = 8 or 16 to amplify small signals before quantization, improving SNR. Always validate performance with real-world signal conditioning, as sensor impedance and excitation stability also limit ultimate precision.
Is the ADS1118IDGSR suitable for battery-powered IoT edge nodes requiring ultra-low power, and what sleep strategies should I implement?
The ADS1118IDGSR can be used in battery-powered IoT designs but requires careful power management due to its ~150 µA active current. Unlike some competitors (e.g., LTC2451, which draws <10 µA), it lacks a dedicated shutdown pin, so power gating via a load switch (e.g., TPS22860) is recommended between conversions. Use single-shot conversion mode triggered by a microcontroller timer or external event to minimize duty cycle. Disable the internal temperature sensor if unused, as it adds ~30 µA. With a 1% duty cycle (e.g., one reading per second), average current can drop below 5 µA. However, consider alternatives like the ADS1113 (lower power, no temp sensor) if sleep current is critical—though you’ll sacrifice integrated diagnostics.
What layout and thermal considerations are critical when placing the ADS1118IDGSR on a compact PCB with mixed-signal components?
The ADS1118IDGSR’s 10-VSSOP package (3.00 mm width) demands strict layout practices to preserve 16-bit performance. Keep analog input traces short and symmetric for differential pairs to minimize offset and CMRR degradation. Place the decoupling capacitors (100 nF + 10 µF) within 2 mm of AVDD and GND pins, connecting directly to a solid analog ground plane. Avoid routing high-speed digital signals (especially SPI clocks) underneath or adjacent to the ADC. Since the device includes an on-chip temperature sensor, self-heating from nearby components or poor thermal relief can skew readings—ensure adequate spacing from power regulators or MCUs. Use thermal vias under the exposed pad (if present) to improve heat dissipation, and maintain at least 50 mil clearance between analog and digital sections to reduce crosstalk.
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ADS1118IDGSR CAD Models
Texas Instruments ADS1118IDGSR PCB symbols & footprints
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