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ADS7952SDBTR
Texas Instruments
IC ADC 12BIT SAR 38TSSOP
2178 Pcs New Original In Stock
12 Bit Analog to Digital Converter 12 Input 1 SAR 38-TSSOP
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5.0 / 5.0
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ADS7952SDBTR
Product Overview
1266149
DiGi Electronics Part Number
ADS7952SDBTR-DGManufacturer
Texas Instruments
ADS7952SDBTR
Description
IC ADC 12BIT SAR 38TSSOPInventory
2178 Pcs New Original In Stock
12 Bit Analog to Digital Converter 12 Input 1 SAR 38-TSSOP
Quantity
Minimum 1
Minimum 1
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ADS7952SDBTR Technical Specifications
Category
Data Acquisition, Analog to Digital Converters (ADC)
Packaging
-
Series
microPOWER™
Product Status
Active
Number of Bits
12
Sampling Rate (Per Second)
1M
Number of Inputs
12
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
38-TFSOP (0.173", 4.40mm Width)
Supplier Device Package
38-TSSOP
Mounting Type
Surface Mount
Base Product Number
ADS7952
Datasheet & Documents
Manufacturer Product Page
ADS7952SDBTR Specifications
HTML Datasheet
ADS7952SDBTR-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
TEXTISADS7952SDBTR
2156-ADS7952SDBTR
ADS7952SDBTRG4-DG
ADS7952SDBTRG4
Standard Package
2,000
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
Ich wurde am Telefon äußerst freundlich begrüßt und professionell betreut.
de desembre 02, 2025
Ich bin begeistert von der effizienten Versandabwicklung. Meine Bestellungen kommen stets schnell und unversehrt an.
de desembre 02, 2025
Their support team is always professional and ready to resolve any issues efficiently.
de desembre 02, 2025
Their attention to detail in packaging ensures products arrive exactly as expected.
de desembre 02, 2025
They consistently ship orders quickly and provide exceptional support afterward.
de desembre 02, 2025
The packaging quality consistently meets high standards.
de desembre 02, 2025
DiGi's honest pricing and reliable support give me peace of mind when shopping.
de desembre 02, 2025
I value their extensive stock range and the professionalism of their support team.
de desembre 02, 2025
Impressed with how quickly my order shipped — it arrived much sooner than anticipated.
de desembre 02, 2025
Having continuous stock availability, DiGi Electronics helps us stay competitive.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the ADS7952SDBTR in a mixed-voltage system with both 3.3V and 1.8V logic domains?
When integrating the ADS7952SDBTR in mixed-signal designs, a critical risk is ensuring level compatibility between the 1.7V–5.25V digital supply range and external SPI controllers operating at 1.8V or 3.3V. While the ADS7952SDBTR supports I/O voltages down to 1.7V, marginal noise margins can occur if the host MCU outputs 1.8V logic driving near the threshold. Use series resistors or dedicated level translators for the SCLK, CS, and DIN lines to prevent latch-up or data corruption. Additionally, decouple the DVDD and AVDD supplies with separate 10µF and 100nF capacitors to reduce digital crosstalk into the analog section, especially when sampling high-impedance sensors.
How does the external reference requirement of the ADS7952SDBTR impact ADC accuracy in noisy industrial environments?
The ADS7952SDBTR relies on an external voltage reference, making it vulnerable to noise-induced errors in harsh environments. To maintain accuracy, use a low-noise, high-PSRR reference like the REF5025 (2.5V) or REF5040 (4.096V) with proper bypassing (10µF tantalum + 100nF ceramic). Route the reference trace short and away from digital switching lines. Consider adding a 10Ω series resistor and 100nF capacitor near the ADS7952SDBTR REFIN pin to form a low-pass filter, reducing high-frequency noise. Failure to stabilize the external reference can lead to gain errors exceeding ±2 LSB in high-temperature or EMI-heavy applications.
Can the ADS7952SDBTR replace the ADS7952SBDBTR directly on an existing PCB, and are there any performance trade-offs?
Yes, the ADS7952SDBTR can directly replace the ADS7952SBDBTR as both are functionally identical, pin-to-pin compatible, and share the same 38-TSSOP footprint. The difference is primarily in product numbering for ordering or packaging variants. However, ensure batch traceability and validate parametric performance (e.g., INL, offset error) if used in precision measurement systems. No performance trade-offs are expected, but verify that the replacement device meets the same temperature grade (-40°C to 125°C) and comes from a trustworthy source to avoid counterfeit risks.
What layout and grounding techniques are critical to minimize crosstalk between the 12 single-ended inputs on the ADS7952SDBTR?
To minimize crosstalk in the ADS7952SDBTR’s 12-channel single-ended configuration, use a solid ground plane beneath the ADC and avoid routing digital traces under the 38-TSSOP package. Keep analog traces short and symmetrical, and guard them with grounded copper pours or 'guard rings' around high-impedance sensor inputs. Use adjacent-channel isolation techniques such as alternating analog and digital ground stitching via multiple vias. Additionally, sequence channel sampling to avoid abrupt transitions (e.g., from full-scale to zero) on adjacent inputs, which can overload the internal sample-and-hold amplifier. Simulating input settling time with worst-case source impedance is also recommended.
How does the SAR architecture of the ADS7952SDBTR affect its suitability for measuring rapidly changing signals compared to delta-sigma ADCs like the ADS1256?
The SAR-based ADS7952SDBTR excels in fast transient capture due to its 1MSPS throughput and zero-latency response, making it ideal for real-time control loops or monitoring rapidly varying signals like motor phase currents. Unlike the oversampling delta-sigma ADS1256, which introduces latency and group delay, the ADS7952SDBTR provides deterministic conversion timing. However, the SAR ADC has lower effective resolution (12-bit ENOB) compared to 24-bit delta-sigma types and less inherent noise rejection. For high-precision DC measurements, the ADS7952SDBTR may require external filtering and careful reference design, whereas the ADS1256 handles noise integration internally. Choose the ADS7952SDBTR when speed and predictability matter more than ultra-high resolution.
Quality Assurance (QC)
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ADS7952SDBTR CAD Models
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