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ADS7953SRHBT
Texas Instruments
IC ADC 12BIT SAR 32VQFN
1436 Pcs New Original In Stock
12 Bit Analog to Digital Converter 16 Input 1 SAR 32-VQFN (5x5)
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5.0 / 5.0
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ADS7953SRHBT
Product Overview
1263859
DiGi Electronics Part Number
ADS7953SRHBT-DGManufacturer
Texas Instruments
ADS7953SRHBT
Description
IC ADC 12BIT SAR 32VQFNInventory
1436 Pcs New Original In Stock
12 Bit Analog to Digital Converter 16 Input 1 SAR 32-VQFN (5x5)
Quantity
Minimum 1
Minimum 1
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ADS7953SRHBT Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
Cut Tape (CT) & Digi-Reel®
Series
microPOWER™
Product Status
Active
Number of Bits
12
Sampling Rate (Per Second)
1M
Number of Inputs
16
Input Type
Single Ended
Data Interface
SPI
Configuration
MUX-S/H-ADC
Ratio - S/H:ADC
1:1
Number of A/D Converters
1
Architecture
SAR
Reference Type
External
Voltage - Supply, Analog
2.7V ~ 5.25V
Voltage - Supply, Digital
1.7V ~ 5.25V
Features
-
Operating Temperature
-40°C ~ 125°C
Package / Case
32-VFQFN Exposed Pad
Supplier Device Package
32-VQFN (5x5)
Mounting Type
Surface Mount
Base Product Number
ADS7953
Datasheet & Documents
HTML Datasheet
ADS7953SRHBT-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
296-25845-2
-296-25845-1-DG
296-25845-1
-ADS7953SRHBT-NDR
296-25845-6
Standard Package
250
Alternative Parts
View DetailsPART 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
가성비 좋은 제품들 덕분에 비용 대비 효율이 정말 높습니다.
de desembre 02, 2025
他們的支持團隊讓我感受到真誠的關懷，服務一流！
de desembre 02, 2025
Je n'ai jamais été déçu par la ponctualité de leur livraison ou la qualité de leur support.
de desembre 02, 2025
The eco-packaging ensured everything was protected without excessive waste.
de desembre 02, 2025
The product packaging from DiGi Electronics surpasses industry standards.
de desembre 02, 2025
Customer support staff are courteous and adept at resolving my concerns.
de desembre 02, 2025
The packaging was not only secure but also stylish, adding a touch of elegance to the unboxing experience.
de desembre 02, 2025
They handled my inquiries with such care and expertise. It made my shopping experience delightful.
de desembre 02, 2025
Delivery was lightning-fast, making the overall shopping experience incredibly convenient.
de desembre 02, 2025
The combination of low prices and sturdy packaging is exactly what I look for.
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Frequently Asked Questions (FAQ)
Can the ADS7953SRHBT safely handle 32V analog input signals without damage, and what external circuitry is needed to protect it during high-voltage industrial sensor interfacing?
The ADS7953SRHBT itself cannot directly accept 32V analog inputs—its absolute maximum analog input voltage is VREF + 0.3V, and VREF must not exceed AVDD. To safely interface with 32V industrial signals (e.g., 4–20mA loops or high-side shunt monitors), you must use external signal conditioning such as voltage dividers, precision attenuators, or op-amp-based level shifters. Include series current-limiting resistors and TVS diodes for transient protection. Always ensure the conditioned signal stays within the 0V to VREF range, and validate clamping behavior under fault conditions to prevent latch-up or long-term degradation of the SAR ADC core.
What are the key risks when replacing the ADS7953SRHBT with the pin-compatible ADS7953SBRHBT in a 1Msps data logging system, and how do I verify compatibility beyond the datasheet?
Although the ADS7953SBRHBT is a drop-in replacement with identical pinout and core functionality, subtle differences in internal reference stability, MUX settling time, or SPI timing margins under temperature extremes can affect 1Msps performance. Specifically, validate acquisition time requirements under your actual load capacitance (e.g., multiplexer output + PCB parasitics), as slower settling may cause code errors at high speed. Run bench tests across the full operating temperature range (-40°C to 125°C) and compare INL/DNL plots between both parts. Also confirm that your firmware handles any minor differences in power-on reset behavior or SPI mode requirements to avoid startup glitches.
How does the microPOWER™ architecture of the ADS7953SRHBT impact battery life in a wireless sensor node, and what trade-offs exist between sampling rate and power consumption during burst-mode operation?
The ADS7953SRHBT’s microPOWER™ design enables ultra-low active current (~350µA at 1Msps) and fast wake-up from shutdown (<1µs), making it ideal for duty-cycled battery applications. However, frequent wake-ups incur overhead from reference stabilization and digital interface initialization. For optimal energy efficiency, batch conversions into longer bursts rather than sporadic single samples—this amortizes startup energy. Use the internal shutdown mode between bursts and keep the digital supply (DVDD) stable to avoid repeated I/O reinitialization. Note that lowering the sampling rate below ~100ksps yields diminishing returns due to fixed quiescent current; below 10ksps, consider a true nanopower ADC instead.
Is the ADS7953SRHBT suitable for high-channel-count multiplexing in noisy motor control environments, and what layout practices minimize crosstalk between adjacent analog inputs?
Yes, but with critical layout and sequencing precautions. The 16-channel multiplexer introduces ~5pF channel-to-channel capacitance, which can couple switching transients in high-dV/dt environments like motor drives. To mitigate crosstalk: route analog inputs with guard rings tied to AGND, maintain >2mm spacing between high-speed digital traces (SPI, SCLK) and analog inputs, and place a 10–100nF ceramic capacitor at each analog input pin. Additionally, insert a small dead time (≥1µs) between channel switches to allow charge injection to settle. Avoid routing multiplexer outputs near switching power supplies, and use a separate analog ground plane stitched to the digital ground at a single point near the ADS7953SRHBT’s exposed pad.
What reliability concerns should I consider when using the ADS7953SRHBT in an automotive under-hood application operating near its 125°C limit, especially regarding MSL3 handling and long-term drift?
Operating near 125°C accelerates electromigration and increases long-term offset drift, potentially degrading ENOB over time. While the ADS7953SRHBT is rated for -40°C to 125°C, sustained operation at junction temperatures >110°C may require derating of supply voltages and verification of parametric drift via accelerated life testing. As an MSL3 device, it must be baked per J-STD-033 if exposed to ambient humidity >30% RH before reflow—failure to do so risks popcorning during assembly. For automotive qualification, validate performance against AEC-Q100 stress tests (e.g., HTOL, THB) even though the part isn’t formally certified; consider adding periodic self-calibration routines in firmware to compensate for thermal drift in critical measurements.
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.
ADS7953SRHBT CAD Models
Texas Instruments ADS7953SRHBT PCB symbols & footprints
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