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ADS8515IDB
Texas Instruments
IC ADC 16BIT SAR 28SSOP
1234 Pcs New Original In Stock
16 Bit Analog to Digital Converter 1 Input 1 SAR 28-SSOP
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Minimum 1
5.0 / 5.0
- (380 Ratings)
ADS8515IDB
Product Overview
1440700
DiGi Electronics Part Number
ADS8515IDB-DGManufacturer
Texas Instruments
ADS8515IDB
Description
IC ADC 16BIT SAR 28SSOPInventory
1234 Pcs New Original In Stock
16 Bit Analog to Digital Converter 1 Input 1 SAR 28-SSOP
Quantity
Minimum 1
Minimum 1
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ADS8515IDB Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Tube
Series
-
Product Status
Active
Number of Bits
16
Sampling Rate (Per Second)
250k
Number of Inputs
1
Input Type
Single Ended
Data Interface
Parallel
Configuration
S/H-ADC
Ratio - S/H:ADC
1:1
Number of A/D Converters
1
Architecture
SAR
Reference Type
External, Internal
Voltage - Supply, Analog
5V
Voltage - Supply, Digital
1.65V ~ 5.25V
Features
-
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SSOP (0.209", 5.30mm Width)
Supplier Device Package
28-SSOP
Mounting Type
Surface Mount
Base Product Number
ADS8515
Datasheet & Documents
Manufacturer Product Page
ADS8515IDB Specifications
HTML Datasheet
ADS8515IDB-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
-ADS8515IDB-NDR
2156-ADS8515IDB-296
-296-21986-5
ADS8515IDBG4
-296-21986-5-NDR
-ADS8515IDBG4-NDR
ADS8515IDBG4-DG
296-21986-5
-296-21986-5-DG
296-21986-5-NDR
-ADS8515IDBG4
Standard Package
50
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
제품의 내구성이 좋아서 강한 사용에도 견딜 수 있었고, 포장 포장도 튼튼해서 만족스럽습니다.
de desembre 02, 2025
언제나 기대 이상인 품질을 제공하며, 배송 시간도 지키는 점이 매우 마음에 들어요.
de desembre 02, 2025
DiGi Electronics’s logistics and support services are truly top-tier, making them a trusted partner.
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Frequently Asked Questions (FAQ)
What are the key design risks when replacing the ADS8515IDB with a pin-compatible ADC like the ADS8513IDB in a high-precision industrial data acquisition system?
Replacing the ADS8515IDB with the ADS8513IDB—while pin-compatible—introduces critical performance trade-offs that can compromise system accuracy. The ADS8513IDB has a lower resolution (14-bit vs. 16-bit), which reduces dynamic range and increases quantization error, potentially degrading signal integrity in precision measurement applications such as strain gauge or thermocouple readout. Additionally, the ADS8513IDB lacks the same internal reference stability and noise performance, requiring external reference redesign. Always verify effective number of bits (ENOB) and total unadjusted error (TUE) under your operating conditions before substitution, especially in environments with temperature drift or EMI sensitivity.
How should I handle the mixed analog and digital supply voltages (5V analog, 1.65V–5.25V digital) on the ADS8515IDB to avoid ground bounce and noise coupling in a compact PCB layout?
To mitigate ground bounce and noise coupling with the ADS8515IDB’s split supply rails, implement a star-grounding strategy with separate analog and digital ground planes connected at a single point near the ADC’s ground pin. Use low-inductance decoupling: place a 100nF ceramic capacitor directly at the AVDD pin and another at DVDD, supplemented by a 10µF bulk capacitor on each rail. Route digital signals away from the analog input path and avoid running high-speed digital traces over the analog ground plane. If using a shared 3.3V rail for DVDD, ensure it’s clean and regulated—consider an LDO with >60dB PSRR to prevent digital switching noise from modulating the reference or input stages.
Can the ADS8515IDB be safely used in a -40°C automotive environment without derating, and what reliability concerns should I anticipate over long-term operation?
While the ADS8515IDB is rated for -40°C to +85°C operation, sustained use at temperature extremes—especially near -40°C—requires careful reliability planning. At low temperatures, solder joint fatigue and PCB CTE mismatch become critical; ensure your 28-SSOP package is mounted on a stress-relieved layout with adequate pad geometry. Internal reference drift may increase below 0°C, so validate offset and gain error over your full thermal cycle. Also, MSL 2 rating means the device can be exposed to ambient conditions for up to 1 year without baking, but prolonged humidity exposure before reflow can cause popcorning—store in dry cabinets if not used immediately. For automotive applications, consider conformal coating to protect against condensation-induced leakage.
What are the integration challenges when using the ADS8515IDB’s parallel interface with a modern low-voltage FPGA (e.g., Xilinx Artix-7 running at 1.8V I/O), and how can level shifting be implemented without degrading timing margins?
Integrating the ADS8515IDB’s 5V-tolerant parallel output with a 1.8V FPGA I/O bank requires bidirectional level translation to prevent damage and ensure reliable data capture. Direct connection risks overvoltage on FPGA pins, even if the ADS8515IDB’s outputs are 5V-tolerant, because rise times may exceed safe dv/dt limits. Use a dedicated voltage translator like the TXB0108 or SN74LVC8T245, ensuring propagation delay (<5ns) and skew matching across all data lines to maintain setup/hold timing. Route the parallel bus with matched trace lengths (±50mil) and terminate with series resistors (22–33Ω) near the ADC to reduce reflections. Also, synchronize the FPGA’s sampling clock with the ADS8515IDB’s BUSY signal to avoid metastability during data valid windows.
Is it safe to operate the ADS8515IDB with an external reference voltage below 2.5V in a battery-powered sensor node, and what impact does this have on SNR and effective resolution?
Operating the ADS8515IDB with an external reference below 2.5V—such as 2.048V from a REF5020—is electrically permissible but introduces significant signal-to-noise ratio (SNR) degradation due to reduced full-scale range and increased susceptibility to noise. Lower reference voltages shrink the input dynamic range, making the system more vulnerable to thermal noise, power supply ripple, and PCB trace interference. For example, a 2.048V reference yields only ~31µV per LSB, where even minor ground shifts or coupling can corrupt the least significant bits. To mitigate this, use a low-noise, low-drift reference with <10ppm/°C stability, guard the reference trace with ground planes, and consider oversampling or digital filtering if your application allows. Always validate ENOB in your actual circuit, as real-world performance may fall well below the theoretical 16-bit ideal.
Quality Assurance (QC)
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ADS8515IDB CAD Models
Texas Instruments ADS8515IDB PCB symbols & footprints
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