My Inquiry
My Account
Texas Instruments ADS7952SBDBTG4
- Part No.:
- ADS7952SBDBTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS7952SBDBTG4.pdf
- Description:
- IC ADC 12BIT SAR 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,556
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADS7952SBDBTG4 from Texas Instruments is a 12-bit, 12-channel, single-ended SAR analog-to-digital converter with 1-MSPS sample rate, zero-latency operation, and 20-MHz serial interface. It features two software-selectable unipolar input ranges (0 to VREF and 0 to 2×VREF), four programmable GPIOs, and dual per-channel alarm thresholds. It is used in high-speed PLC data acquisition systems requiring precise multi-channel monitoring.
For engineers reviewing the ADS7952SBDBTG4 datasheet, ADS7952SBDBTG4 pinout, ADS7952SBDBTG4 application, or ADS7952SBDBTG4 equivalent, key selection considerations include its 12-bit resolution at 1 MSPS, TSSOP-30 package footprint, 2.7–5.25 V analog supply range, and support for auto/manual channel sequencing in industrial signal monitoring.
Technical Context
The ADS7952SBDBTG4 implements a capacitor-based SAR architecture with integrated sample-and-hold, enabling zero-latency conversion. Its serial interface uses active-low CS for sampling initiation and SCLK for synchronous data transfer, supporting both auto-sequenced and manually selected channel conversion modes.
It supports dual input ranges via the GPIO2 (Range) pin and provides per-channel high/low alarm outputs driven by GPIO0 (Alarm) and GPIO1 (Low alarm). The device operates with independent analog (+VA) and digital I/O (+VBD) supplies, allowing glueless interfacing with mixed-voltage host processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 LSB = VREF/4096 quantization step for precision measurement applications |
| Sample Rate | 1 MSPS - enables real-time capture of signals up to 500 kHz (Nyquist-limited) without undersampling |
| Analog Supply Range | 2.7 V to 5.25 V - supports direct connection to common industrial rails including 3.3 V and 5 V systems |
| I/O Supply Range | 1.7 V to 5.25 V - permits interoperability with low-voltage microcontrollers (e.g., 1.8 V logic) without level shifters |
| Input Bandwidth | 47 MHz at 3 dB - ensures minimal attenuation for fast transient signals before digitization |
| Power Dissipation | 14.5 mW at 1 MSPS (+VA = 5 V, +VBD = 3 V) - suitable for thermally constrained embedded modules |
| Power-Down Current | 1 µA - reduces system standby power in battery-backed or energy-sensitive applications |
Pinout & Package
ADS7952SBDBTG4 is packaged in a 30-pin TSSOP (DBT) with nominal body size 7.80 mm × 4.40 mm. All pins are electrically validated per TI SLAS605C Rev C datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH11 | Analog Input | Twelve single-ended analog input channels routed through internal multiplexer to AINP |
| AINP / AINM | Differential ADC Input | True differential input pair accepting signal and reference ground for noise rejection |
| MXO | Analog Output | Multiplexer output node - connects selected channel to ADC core during conversion |
| REFP / REFM | Analog Reference | High-impedance reference voltage inputs supporting external REF5025 or similar precision references |
| CS (active low) | Digital Control | Falling edge initiates sampling; holds conversion state during serial transaction |
| SCLK / SDI / SDO | Serial Interface | Standard SPI-compatible 3-wire interface with 20-MHz max clock for high-throughput data streaming |
| GPIO0–GPIO3 | Configurable I/O | Four bidirectional pins: GPIO0 = alarm output, GPIO1 = low-alarm output, GPIO2 = range select, GPIO3 = power-down control |
| +VA / AGND / +VBD / BDGND | Power & Ground | Separate analog/digital supplies minimize coupling noise; dual ground domains improve PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Eliminates pipeline delay - critical for closed-loop control where immediate feedback is required |
| Two programmable alarm levels per channel | Enables autonomous over/under-limit detection without host CPU intervention, reducing firmware overhead |
| Auto and manual channel selection modes | Supports flexible scan patterns: fixed sequence for periodic monitoring or on-demand read for event-triggered acquisition |
| 47 MHz input bandwidth | Preserves signal integrity for fast transients (e.g., motor current spikes, power supply ripple) before digitization |
| 1 µA power-down current | Extends operational lifetime in intermittent-sampling applications such as remote sensor nodes |
Applications
| PLC Analog Input Module | Optical Line Card Monitoring |
|---|---|
Use Scenario: Simultaneous acquisition of 12 temperature, pressure, and current sensor signals in a modular industrial PLC rack. IC Role / Device Role / Timing Role: Primary ADC front-end converting conditioned analog inputs into synchronized 12-bit digital streams for FPGA or ARM-based controller ingestion. Use Value: 12-channel integration eliminates need for multiple 4-channel ADCs, reducing BOM count and PCB area while maintaining 1-MSPS aggregate throughput. |
Use Scenario: Real-time monitoring of laser bias current, TEC voltage, and photodiode outputs across 12 ports in a DWDM line card. IC Role / Device Role / Timing Role: High-fidelity, low-latency digitizer capturing rapid thermal drift and optical power fluctuations for closed-loop compensation algorithms. Use Value: Zero-latency operation ensures control loop response time remains sub-microsecond, preventing wavelength drift during dynamic load changes. |
| Medical Patient Monitor Front-End | Digital Power Supply Telemetry |
Use Scenario: Multi-parameter acquisition of ECG, respiration, SpO₂ analog signals in portable patient monitors with strict power budgets. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC providing simultaneous sampling of safety-critical biopotential channels with programmable alarm thresholds. Use Value: Dual alarm per channel enables independent high/low limits for each vital sign, triggering alerts without host processor polling. |
Use Scenario: In-system telemetry of rail voltages, phase currents, and temperature sensors in multi-phase VRMs and POL converters. IC Role / Device Role / Timing Role: Embedded ADC feeding real-time health metrics to PMBus-compliant controllers for adaptive margining and fault logging. Use Value: 2.7–5.25 V analog supply range allows direct connection to monitored rails, eliminating external scaling resistors and associated errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953SBDBTG4 | 16-channel variant in same 30-pin TSSOP package; identical timing, resolution, and feature set | Used when system requires >12 analog inputs without changing layout or firmware interface layer | Select ADS7953SBDBTG4 only if full 16-channel capacity is needed; pinout and register map are identical, enabling drop-in upgrade |
| ADS7952IRHBT | VQFN-32 package (5.0 mm × 5.0 mm); same electrical specs but different thermal performance and board assembly requirements | Preferred for space-constrained designs where TSSOP footprint is prohibitive and reflow compatibility is confirmed | Choose ADS7952IRHBT for higher-density layouts; verify thermal derating and solder paste stencil design due to smaller pitch and exposed pad |
Compared with ADS7953SBDBTG4 and ADS7952IRHBT, the ADS7952SBDBTG4 offers optimal balance of channel count, industry-standard TSSOP-30 manufacturability, and legacy design reuse-making it the default choice for new 12-channel industrial DAQ implementations where layout stability and supply chain maturity are prioritized.
Availability
ADS7952SBDBTG4 is available at Aetrix Electronics and suitable for PLC/IPC, optical line card monitoring, medical instrumentation, digital power supplies, and high-speed closed-loop systems requiring stable component supply and long-term industrial availability.
Supply support for ADS7952SBDBTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision data converters and industrial-grade ICs.
The ADS79xx family-including ADS7952SBDBTG4-is designed specifically for high-speed, multi-channel industrial data acquisition, emphasizing zero-latency operation, flexible channel management, and robust noise immunity in harsh electromagnetic environments.
FAQ
What is the maximum supported serial clock frequency for ADS7952SBDBTG4?
The ADS7952SBDBTG4 supports a maximum SCLK frequency of 20 MHz, enabling full 12-bit word transfers within 1 µs per conversion cycle. This timing aligns with its 1-MSPS sample rate specification and ensures reliable communication with standard SPI masters. The ADS7952SBDBTG4 datasheet specifies tsu1, tsu2, and tval timing parameters to validate setup/hold margins at this rate.
Does ADS7952SBDBTG4 require an external reference voltage?
Yes, ADS7952SBDBTG4 requires an external precision reference applied to REFP and REFM pins. It does not include an internal reference. The device supports 0 to VREF and 0 to 2×VREF input ranges, and TI recommends REF5025 (2.5 V ±0.1 V) for optimal performance. Reference input resistance is specified as 10 GΩ, minimizing loading effects on external reference sources.
How many GPIOs are available on ADS7952SBDBTG4 and what are their functions?
The ADS7952SBDBTG4 provides four GPIOs (GPIO0–GPIO3) in its TSSOP-30 package. GPIO0 serves as active-high alarm output, GPIO1 as active-high low-alarm output, GPIO2 as range-select input (1 = 0 to 2×VREF, 0 = 0 to VREF), and GPIO3 as active-low power-down input. These are fully programmable via internal registers and retain configuration across power cycles.
Can ADS7952SBDBTG4 operate with separate analog and digital supply voltages?
Yes, ADS7952SBDBTG4 supports independent analog (+VA) and digital I/O (+VBD) supplies. +VA ranges from 2.7 V to 5.25 V for the ADC core and reference circuitry, while +VBD ranges from 1.7 V to 5.25 V for the serial interface and GPIOs. This separation allows interfacing with low-voltage microcontrollers without level-shifting, and improves noise isolation between analog and digital domains.
What is the purpose of the MXO pin on ADS7952SBDBTG4?
The MXO (Multiplexer Output) pin on ADS7952SBDBTG4 is an analog output that presents the selected channel's signal after internal multiplexing but before ADC conversion. It enables external signal conditioning (e.g., PGA gain adjustment or filtering) between multiplexing and digitization. This pin is not intended for direct connection to host processors and must be buffered if used for diagnostic probing or external amplification.
ADS7952SBDBTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- 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
- Supplier Device Package:
- 38-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS7952SBDBTG4 FAQ
1.How can I place an order for ADS7952SBDBTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7952SBDBTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADS7952SBDBTG4 reliable?
The price and inventory of ADS7952SBDBTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7952SBDBTG4 is usually 5 days.
3.What payment methods are accepted for ADS7952SBDBTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7952SBDBTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7952SBDBTG4?
ADS7952SBDBTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7952SBDBTG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADS7952SBDBTG4?
For technical support, including ADS7952SBDBTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7952SBDBTG4 requirements.
6.How does Aetrix verify that ADS7952SBDBTG4 is sourced from the original manufacturer or authorized distributors?
All ADS7952SBDBTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADS7952SBDBTG4 meets industry standards.
7.What is the process for return or replacement of ADS7952SBDBTG4?
All ADS7952SBDBTG4 units undergo pre-shipment inspection (PSI). If there is an issue with ADS7952SBDBTG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADS7952SBDBTG4 part is unused and in its original packaging.
Return procedure for ADS7952SBDBTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADS7952SBDBTG4 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
