ADS7955SDBTG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments ADS7955SDBTG4 is an 8-channel, 10-bit successive-approximation ADC with 0.8 µs conversion time and SPI-compatible interface. Supports analog input voltages up to 5.02 V and fits into a compact TSSOP-30 package. Available in tape-and-reel format for automated SMT assembly and worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 30
- Lifecycle
- OBSOLETE
- Datasheet
- ADS7955SDBTG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-channel multiplexed 10-bit SAR ADC with 0.8 µs conversion time supports fast multi-channel data acquisition in a single device
- 5.02 V analog input range accommodates direct measurement of 5 V sensor signals without external attenuation circuitry
- Compact TSSOP-30 package with SPI-compatible interface enables space-efficient PCB integration alongside microcontrollers
Applications
The ADS7955SDBTG4 is used in industrial sensor interfaces and battery monitoring systems where 8 analog channels must be digitized rapidly with 10-bit accuracy. Its 5 V input range and SPI interface make it a natural fit for low-power embedded systems and data loggers driven by ARM or MSP430 microcontrollers. Automotive and medical diagnostic equipment also leverage its compact TSSOP-30 footprint and RoHS-compliant construction.
Specifications
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.02V |
| Conversion Time-Max | 0.8 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G30 |
| JESD-609 Code | e4 |
| Linearity Error-Max (EL) | 0.0488% |
| Number of Analog In Channels | 8 |
| Number of Bits | 10 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | PARALLEL, WORD |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP30,.25,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 1MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Screening Level | TS 16949 |
| Supply Current-Max | 3mA |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ADS7955SDBTG4:
10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO30
Frequently Asked Questions
How fast can ADS7955SDBTG4 complete a conversion and how many channels does it support?
ADS7955SDBTG4 completes each analog-to-digital conversion in a maximum of 0.8 µs, enabling throughput rates above 1 Msps when accounting for channel switching. It provides 8 multiplexed analog input channels, each accepting signals up to 5.02 V. The 10-bit resolution delivers 1024 output codes, offering 0.1% full-scale accuracy suitable for industrial and consumer measurement systems.
Which embedded system designs can pair ADS7955SDBTG4 with a 3.3 V microcontroller via SPI?
ADS7955SDBTG4 integrates directly with 3.3 V or 5 V microcontrollers through its SPI-compatible serial interface, requiring no additional level-translation ICs in many designs. Its TSSOP-30 package occupies minimal PCB area, making it ideal for compact IoT nodes, portable instruments, and industrial control boards running ARM Cortex-M or MSP430 processors. The 8-channel multiplexer allows monitoring multiple sensors — temperature, pressure, current — from a single SPI peripheral.
For a data logger sampling 8 sensors simultaneously, what throughput does ADS7955SDBTG4 achieve?
With a 0.8 µs maximum conversion time and minimal SPI overhead, ADS7955SDBTG4 can cycle through all 8 channels at approximately 100 ksps per channel when clocked efficiently. The 10-bit output word is transferred over SPI at rates determined by the master clock, supporting system clock rates up to several MHz. This makes it adequate for vibration monitoring, power-rail logging, and slow-motion analog capture applications.
Is ADS7955SDBTG4 RoHS-compliant and suitable for long-lifecycle industrial designs?
Yes, ADS7955SDBTG4 carries a Pb-free, RoHS-compliant designation indicated by its JESD-609 e4 code and the 'G4' suffix in the part number. The TSSOP-30 package is compatible with standard lead-free SMT reflow profiles. However, its YTEOL (years to end of life) is listed as 0, so procurement engineers should confirm availability or qualify an alternative 10-bit SAR ADC for designs requiring long-term sourcing.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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