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Texas Instruments ADS7960SDBT
- Part No.:
- ADS7960SDBT
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
ADS7960SDBT.pdf
- Description:
- IC ADC 8BIT SAR 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,081
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Product details
Overview
ADS7960SDBT 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), programmable per-channel high/low alarm thresholds, and four configurable GPIOs in its 30-pin TSSOP package. It is used in high-speed PLC analog input modules requiring precise multi-channel voltage monitoring.
For engineers reviewing the ADS7960SDBT datasheet, ADS7960SDBT pinout, ADS7960SDBT application, or ADS7960SDBT equivalent, key selection considerations include its 12-bit resolution at 1 MSPS, TSSOP-30 package compatibility with other ADS79xx family members, dual input range flexibility, GPIO alarm signaling capability, and support for auto/manual channel sequencing in industrial data acquisition systems.
Technical Context
The ADS7960SDBT 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-sequencing across 12 channels and manual channel selection per conversion cycle.
It operates from 2.7 V to 5.25 V analog supply (+VA) and 1.7 V to 5.25 V I/O supply (+VBD), allowing glueless interfacing with diverse microcontrollers and DSPs. Input bandwidth is specified at 47 MHz (3 dB), and reference input resistance is 10 GΩ, supporting direct connection to high-impedance sources like precision op-amp buffers (e.g., THS4031).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR ADC with no missing codes guaranteed over temperature |
| Sample Rate | 1 million samples per second - enables real-time monitoring of fast transients in power supplies or motor control feedback loops |
| Analog Supply Range | 2.7 V to 5.25 V (+VA) - supports operation from single Li-ion battery or standard 3.3 V/5 V rails |
| I/O Supply Range | 1.7 V to 5.25 V (+VBD) - allows direct interface with 1.8 V, 3.3 V, or 5 V digital hosts without level shifters |
| Input Ranges | Software-selectable 0 to VREF or 0 to 2×VREF - simplifies system-level scaling for varying sensor output spans |
| Power Dissipation | 14.5 mW at 1 MSPS with +VA = 5 V and +VBD = 3 V - suitable for thermally constrained industrial modules |
| Power-Down Current | 1 μA - enables rapid entry/exit from low-power state during idle periods in battery-powered edge sensors |
Pinout & Package
ADS7960SDBT is housed in a 30-pin TSSOP package (7.80 mm × 4.40 mm) with exposed thermal pad. Pin functions are validated per TI SLAS605C Rev C (July 2018) for ADS7960 in DBT package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH11 | Analog input | 12 single-ended analog input channels; internally multiplexed to AINP via MXO path |
| AINP / AINM | Differential ADC input pair | Primary analog input node; AINM serves as reference return for pseudo-differential configurations |
| MXO | Analog output | Multiplexer output - provides buffered access to selected channel for external PGA or diagnostic probing |
| REFP / REFM | Analog reference inputs | Accept external reference (e.g., REF5025); REFM must be tied to AGND or driven separately for ratiometric operation |
| CS / SCLK / SDI / SDO | Digital serial interface | Standard SPI-compatible 4-wire interface; CS falling edge initiates sample, SCLK clocks conversion and data transfer |
| GPIO0–GPIO3 | Configurable digital I/O | Four pins support alarm outputs (high/low), range selection (Range), or power-down (PD); GPIO3 = PD (active low) |
| +VA / AGND / +VBD / BDGND | Power domains | Separated analog/digital supplies reduce noise coupling; AGND and BDGND must be connected at single point near device |
Key Features
| Feature | Design Value |
|---|---|
| Zero-latency conversion | Eliminates pipeline delay - critical for closed-loop control where immediate feedback is required |
| Per-channel programmable alarms | Two independent thresholds per channel generate GPIO-driven interrupt signals without host CPU polling |
| Auto/manual channel sequencing | Reduces firmware overhead: auto-mode cycles through preconfigured channels; manual mode allows on-demand selection |
| High-input-impedance multiplexer output (MXO) | Enables connection to external high-Z buffer (e.g., THS4031) without loading selected channel during conversion |
| Pin compatibility across ADS79xx family | Same 30-pin TSSOP footprint supports drop-in migration between 4-, 8-, 12-, and 16-channel variants (e.g., ADS7950 to ADS7960) |
Applications
| PLC Analog Input Module | Optical Line Card Monitoring |
|---|---|
Use Scenario: Simultaneous monitoring of 12 voltage rails (e.g., bias, pump laser, TEC) on telecom line cards with ±1% accuracy requirement. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized snapshots of all 12 channels at 100 kSPS effective rate using auto-sequencing mode. Use Value: 12-bit resolution and 47 MHz input bandwidth ensure accurate capture of fast supply glitches; GPIO alarm outputs trigger immediate hardware fault response. | Use Scenario: Real-time monitoring of photodiode current outputs converted to voltage via transimpedance amplifiers in DWDM transceivers. IC Role / Device Role / Timing Role: High-Z AINP/MXO interface accepts buffered amplifier outputs; zero-latency mode enables immediate correction in adaptive bias control loops. Use Value: 0 to 2×VREF range accommodates wide dynamic range of optical signal levels; 1 μA power-down current extends module standby life. |
| Medical Patient Monitor Front-End | Digital Power Supply Telemetry |
Use Scenario: Acquisition of ECG, respiration, and temperature sensor outputs in portable patient monitors with strict EMC and low-noise requirements. IC Role / Device Role / Timing Role: SAR ADC with separated analog/digital supplies (+VA/AGND and +VBD/BDGND) minimizes digital switching noise coupling into sensitive analog paths. Use Value: 14.5 mW typical power at 1 MSPS enables thermal management in compact enclosures; REFP/REFM inputs support stable ratiometric measurement against isolated reference. | Use Scenario: Multi-rail telemetry in server PSUs, measuring output voltages, currents (via shunt), and temperatures across 12 DC-DC converters. IC Role / Device Role / Timing Role: Configured in manual mode to prioritize high-priority rails (e.g., CPU core) with faster update rates while scanning others less frequently. Use Value: Programmable per-channel alarms detect overvoltage/undervoltage events before protection ICs respond; GPIO0–GPIO3 provide dedicated hardware interrupt lines per rail group. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7952SDBT | 12-bit, 8-channel variant in same 30-pin TSSOP; identical timing, interface, and feature set except channel count | Suitable when only 8 analog inputs are required; reduces BOM cost and PCB routing complexity | Select ADS7952SDBT if system requires ≤8 channels and board layout re-use is prioritized over future scalability |
| ADS8688IPWR | 16-bit, 8-channel SAR ADC with integrated PGA and reference; higher resolution but lower 1-MSPS aggregate rate (125 kSPS per channel) | Better suited for precision sensor conditioning where resolution >12-bit is mandatory, but not for high-throughput multi-channel monitoring | Choose ADS8688IPWR only when absolute accuracy (±0.02% FSR INL) outweighs speed and channel count requirements |
Compared with ADS7952SDBT, ADS7960SDBT provides four additional analog inputs in identical footprint and timing - ideal for upgrading legacy 8-channel designs. Against ADS8688IPWR, ADS7960SDBT delivers higher aggregate throughput and simpler signal chain (no PGA calibration needed), trading off resolution for speed and integration density.
Availability
ADS7960SDBT is available at Aetrix Electronics and suitable for PLC analog input modules, optical line card monitoring systems, and medical instrumentation requiring stable component supply, long-term manufacturability, and consistent parametric performance across production batches.
Supply support for ADS7960SDBT 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 company specializing in analog and embedded processing technologies, with leadership in data converters, power management, and interface solutions.
The ADS79xx product line was designed specifically for high-speed, multi-channel industrial data acquisition - emphasizing pin compatibility, flexible input configuration, and robust serial interfacing for PLCs, test equipment, and automated systems.
FAQ
What is the maximum clock frequency supported by the ADS7960SDBT serial interface?
The ADS7960SDBT supports a 20-MHz SCLK frequency, enabling full 12-bit conversion and data readout within 1 µs. This timing aligns with its 1-MSPS sample rate specification and ensures reliable communication with modern microcontrollers and FPGAs. The ADS7960SDBT datasheet specifies setup/hold times referenced to this 20-MHz maximum, and operation above this frequency may result in invalid conversions or timing violations.
Does the ADS7960SDBT require an external reference voltage, and what are the acceptable ranges?
Yes, the ADS7960SDBT requires an external reference applied to REFP and REFM pins. It supports reference voltages from 2.0 V to 3.0 V (per SLAS605C Rev C), with typical use cases employing REF5025 (2.5 V ±0.1 V). The device's two input ranges (0 to VREF and 0 to 2×VREF) scale directly with this reference, so stability and accuracy of the external reference directly determine overall ADC performance. The ADS7960SDBT does not include an internal reference.
How many GPIOs are available on the ADS7960SDBT, and what functions can they serve?
The ADS7960SDBT provides four individually configurable GPIOs (GPIO0–GPIO3) in its 30-pin TSSOP package. These support alarm outputs (high-alarm, low-alarm), input range selection (Range), and active-low power-down control (PD). Unlike VQFN variants, the ADS7960SDBT fully utilizes all four GPIOs - confirmed in TI's pin function table for DBT package. Each GPIO's role is programmed via internal registers, and their states persist across power cycles unless reconfigured.
Is the ADS7960SDBT pin-compatible with other devices in the ADS79xx family, and which ones share the same footprint?
Yes, the ADS7960SDBT is pin-compatible with all 30-pin TSSOP variants in the ADS79xx family: ADS7950SDBT (4-channel), ADS7951SDBT (8-channel), ADS7952SDBT (8-channel), ADS7954SDBT (4-channel), and ADS7955SDBT (8-channel). This shared 30-pin footprint allows hardware reuse across different channel counts and resolutions (8-/10-/12-bit), simplifying design scalability and inventory management. The ADS7960SDBT specifically matches ADS7952SDBT pin-for-pin.
What is the input bandwidth and effective number of bits (ENOB) of the ADS7960SDBT at full sample rate?
The ADS7960SDBT has a specified small-signal 3-dB input bandwidth of 47 MHz, enabling accurate digitization of fast transients and high-frequency noise components. While ENOB is not explicitly published in the SLAS605C datasheet, typical SNR of 70.5 dB (at fIN = 10 kHz, +VA = 5 V) corresponds to ~11.5-bit ENOB under those conditions. At 1 MSPS full-scale operation, the ADS7960SDBT maintains 12-bit no-missing-codes performance, with integral nonlinearity (INL) of ±1 LSB max - sufficient for most industrial monitoring applications.
ADS7960SDBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- microPOWER™
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- 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:
- -
ADS7960SDBT FAQ
1.How can I place an order for ADS7960SDBT through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS7960SDBT 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 ADS7960SDBT reliable?
The price and inventory of ADS7960SDBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS7960SDBT is usually 5 days.
3.What payment methods are accepted for ADS7960SDBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS7960SDBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS7960SDBT?
ADS7960SDBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS7960SDBT 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 ADS7960SDBT?
For technical support, including ADS7960SDBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS7960SDBT requirements.
6.How does Aetrix verify that ADS7960SDBT is sourced from the original manufacturer or authorized distributors?
All ADS7960SDBT 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 ADS7960SDBT meets industry standards.
7.What is the process for return or replacement of ADS7960SDBT?
All ADS7960SDBT units undergo pre-shipment inspection (PSI). If there is an issue with ADS7960SDBT, 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 ADS7960SDBT part is unused and in its original packaging.
Return procedure for ADS7960SDBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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