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ADS8665IPWR
Texas Instruments
IC ADC 12BIT SAR 16TSSOP
15306 Pcs New Original In Stock
12 Bit Analog to Digital Converter 1 Input 1 SAR 16-TSSOP
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5.0 / 5.0
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ADS8665IPWR
Product Overview
1235029
DiGi Electronics Part Number
ADS8665IPWR-DGManufacturer
Texas Instruments
ADS8665IPWR
Description
IC ADC 12BIT SAR 16TSSOPInventory
15306 Pcs New Original In Stock
12 Bit Analog to Digital Converter 1 Input 1 SAR 16-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS8665IPWR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Number of Bits
12
Sampling Rate (Per Second)
500k
Number of Inputs
1
Input Type
Differential, Pseudo-Differential, Single Ended
Data Interface
SPI
Configuration
PGA-ADC
Ratio - S/H:ADC
0:1
Number of A/D Converters
1
Architecture
SAR
Reference Type
Internal
Voltage - Supply, Analog
4.75V ~ 5.25V
Voltage - Supply, Digital
1.65V ~ 5.25V
Features
Internal Oscillator, PGA
Operating Temperature
-40°C ~ 125°C
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
16-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS8665
Datasheet & Documents
Manufacturer Product Page
ADS8665IPWR Specifications
HTML Datasheet
ADS8665IPWR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-48483-2
296-48483-1
296-48483-6
ADS8665IPWR-DG
Standard Package
2,000
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
수시로 업데이트되는 배송 정보 덕분에 안심할 수 있었습니다.
de desembre 02, 2025
Je suis très rassuré par la stabilité de leurs produits et leur prix abordable.
de desembre 02, 2025
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de desembre 02, 2025
The professionalism of the team is unmatched, and delivery was swift.
de desembre 02, 2025
I am constantly impressed by the high standards of their manufacturing process.
de desembre 02, 2025
DiGi Electronics manages inventory effectively, ensuring the right products at the right time.
de desembre 02, 2025
My experiences with DiGi Electronics have always been positive and reassuring.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when integrating the ADS8665IPWR in a high-noise industrial environment with long sensor traces?
When integrating the ADS8665IPWR in noisy industrial settings with long sensor inputs, the primary risks involve signal integrity degradation due to EMI coupling into high-impedance analog traces. Since the ADS8665IPWR supports pseudo-differential and single-ended inputs, unbalanced trace routing can convert common-mode noise into differential errors, especially when using the internal PGA. To mitigate this, use shielded twisted-pair cables, place a low-pass RC filter (e.g., 100Ω + 10nF) close to the ADS8665IPWR analog input pins, and prefer true differential signaling when sensor interface permits. Additionally, ensure the 10µF bypass capacitor on AVDD is low-ESR ceramic and placed within 3mm of the pin to maintain stable internal reference performance under dynamic load.
Can the ADS8665IPWR reliably replace the LTC2364CDKD-12 in a portable data logger operating from a 3.3V single supply?
Yes, the ADS8665IPWR can replace the LTC2364CDKD-12 in a 3.3V portable data logger, but critical differences must be addressed. Unlike the LTC2364’s external reference dependency, the ADS8665IPWR uses an internal reference, simplifying design but limiting full-scale range adjustability. The ADS8665IPWR’s 500ksps sampling rate matches the LTC2364, but power consumption may be slightly higher during active conversion due to internal PGA and oscillator overhead. Ensure the analog input signals comply with the 0V to VREF range (typically 2.5V on ADS8665IPWR), and verify that SPI timing is compatible—ADS8665IPWR supports 1.65V to 5.25V IO voltage, making it safe for 3.3V MCU interfacing. Test deep-sleep current if battery life is critical, as ADS8665IPWR lacks an explicit power-down mode in some operating states.
How does the internal PGA in the ADS8665IPWR affect SNR when amplifying low-level thermocouple signals near the noise floor?
The internal PGA of the ADS8665IPWR amplifies both signal and input-referred noise, which can degrade SNR when measuring low-level thermocouple outputs (e.g., K-type at ~40µV/°C). At higher gains (e.g., 8x or 16x), the effective resolution improves, but the system noise bandwidth—determined by external RC filtering and ADC sampling—becomes critical. For optimal SNR, bandwidth should be limited to just beyond the signal bandwidth (e.g., <10Hz for static temperature monitoring). Additionally, the internal reference has a typical drift of 10ppm/°C, which introduces gain error over temperature. For precision thermocouple applications, consider calibrating system gain at multiple temperatures or supplementing with external pre-amplification using a low-drift instrumentation amplifier before feeding a scaled signal into the ADS8665IPWR at lower PGA gain.
What are the SPI interface risks when connecting the ADS8665IPWR to an STM32 microcontroller running at 1.8V IO voltage?
Interfacing the ADS8665IPWR with an STM32 MCU at 1.8V IO presents a level-shifting risk because while the ADS8665IPWR’s digital supply (DVDD) can operate down to 1.65V, signal compatibility must be ensured on all SPI lines (SDI, SCLK, CS). Although the ADS8665IPWR specifies 1.65V–5.25V for digital IO, confirm that the STM32’s 1.8V logic high exceeds the ADS8665IPWR’s VIH minimum (typically 0.7×DVDD). At 1.8V DVDD, this becomes ~1.26V, which is generally safe. However, to prevent misreads or latch-up during power sequencing, use bi-directional level translators if DVDD > 3.3V while MCU runs at 1.8V. Also, minimize trace length between MCU and ADS8665IPWR to avoid signal reflections at high SPI clock rates (max SCLK is 50MHz), and use series resistors (22Ω) if ringing is observed.
What long-term reliability issues should be considered when deploying the ADS8665IPWR in automotive under-hood applications near 125°C?
In automotive under-hood environments where ambient temperatures approach 125°C, the ADS8665IPWR—rated for -40°C to 125°C—operates at its thermal limit, increasing risks of parametric drift and early life failure. While the device is qualified for this range, sustained high temperature accelerates electromigration and package stress. Ensure the PCB includes adequate copper pour for heat dissipation and avoid placing the ADS8665IPWR near high-power components. Also, the MSL 3 rating implies sensitivity to moisture; reflow must follow J-STD-020 guidelines with baking if exposed beyond 168 hours. For reliability, perform HALT testing on prototypes and consider derating internal reference performance—check INL and offset drift over extended temperature cycles, as these can impact calibration stability in safety-critical sensing applications.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ADS8665IPWR CAD Models
Texas Instruments ADS8665IPWR PCB symbols & footprints
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