Part A
ADS8344EB
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 6770 PCS
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8344EB and ADS8344E/2K5G4 are functionally equivalent 16-bit, 4-channel serial ADCs sharing the same core architecture, package footprint, and electrical specifications; the only meaningful distinction is the ordering format, where the ADS8344EB is supplied as a single unit and the ADS8344E/2K5G4 is supplied as a 2,500-unit tape-and-reel. Either part can serve as a direct functional substitute for the other in new or existing designs, provided the procurement quantity and packaging format align with production requirements.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Ordering Format and Packaging
Validation required
Parts at a glance
Part B
ADS8344E/2K5G4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 8594 PCS
- Package
- SSOP-20
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS8344EB | ADS8344E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the smallest analog signal change the ADC can resolve; identical resolution means equivalent measurement precision. |
| Number of Channels | 8 single-ended / 4 differential | 8 single-ended / 4 differential | Defines how many analog inputs can be multiplexed into the converter; matching channel count supports the same sensor front-end designs. |
| Sampling Rate | 100 kSPS | 100 kSPS | Sets the maximum throughput for the ADC; identical rates ensure the same signal bandwidth and timing behavior. |
| Interface Type | SPI (serial) | SPI (serial) | Determines compatibility with the host microcontroller or DSP; matching serial interface allows drop-in communication compatibility. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Defines the operating power range; identical supply ranges allow the same power rail design and level compatibility. |
| Package / Mounting | 20-SSOP (surface mount) | 20-SSOP (surface mount) | Affects PCB footprint and assembly; matching package enables physical interchangeability on the same board layout. |
| Packaging / Ordering Format | Tube / individual | Tape & Reel (2000 units) | Determines how parts are supplied for manufacturing; reel packaging suits automated high-volume assembly while tube suits prototyping or low-volume runs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Specifies the environmental range for reliable operation; identical ranges ensure the same application environments are supported. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8344EB | ADS8344E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | - | 100k |
| Number of Inputs | 4, 8 | 4, 8 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | SPI |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | - | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Base Product Number | ADS8344 | - |
| Sampling Rate (Per Second) | 100k | - |
| Number of A / D Converters | 1 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Bulk, Tube | - |
Frequently asked questions
What are the key differences between the ADS8344EB and the ADS8344E/2K5G4?
Both devices are 16-bit, 4-channel, serial-output successive-approximation ADCs from Texas Instruments in the same SSOP-20 package and share the same core electrical specifications. The primary difference is the ordering and packaging designation: the ADS8344EB is supplied as a tube/rail orderable part number, while the ADS8344E/2K5G4 is a tape-and-reel variant (2,500 units per reel) with a G4 lead-free/RoHS-compliant finish designation. Functionally and parametrically they are the same converter.
Are the ADS8344EB and ADS8344E/2K5G4 electrically and functionally interchangeable?
Yes. Both are the same ADS8344 die in the same 20-pin SSOP package with identical pinout, resolution (16-bit), input configuration (4 single-ended or 2 differential channels), serial interface, and supply requirements. The differences are limited to packaging format and the G4 lead-free finish marking, so they are interchangeable in a design provided the board assembly process is compatible with the respective finish.
What is the resolution and channel configuration of these ADCs?
Both parts are 16-bit successive-approximation analog-to-digital converters with four single-ended inputs or two differential input pairs, selectable through the serial interface. They operate from a single +2.7 V to +5.25 V supply and include an internal reference, with the reference also configurable externally.
What serial interface do the ADS8344EB and ADS8344E/2K5G4 use?
Both devices use a 4-wire SPI-compatible serial interface (CS, DIN, DOUT, and DCLK) that supports daisy-chaining and is compatible with standard SPI, QSPI, and Microwire hosts. The interface is used both to configure the input channel and mode and to read the conversion result.
What supply voltage and reference options do these parts support?
Both parts operate from a single analog supply of +2.7 V to +5.25 V. They can use the internal reference or an external reference applied to the VREF pin, and the reference voltage sets the full-scale input range. The digital supply (VDD) is the same single supply in these devices.
What package do the ADS8344EB and ADS8344E/2K5G4 use, and are they pin-compatible?
Both are offered in a 20-pin SSOP (Shrink Small Outline Package) with identical pin assignments, so they are pin-compatible and share the same PCB land pattern. The EB suffix denotes the tube/rail orderable variant, while the E/2K5G4 suffix denotes the tape-and-reel, lead-free (G4) variant.
What does the G4 suffix on the ADS8344E/2K5G4 indicate?
The G4 suffix is Texas Instruments' designation for a lead-free (Pb-free), RoHS-compliant package finish. The ADS8344EB is the standard orderable part number without the G4 marking. Designers should confirm the specific finish requirement against their assembly and compliance specifications.
Which part should be selected for high-volume automated assembly?
The ADS8344E/2K5G4 is supplied in tape-and-reel format (2,500 units per reel), which is suited to automated pick-and-place assembly lines. The ADS8344EB is supplied in tube/rail format, which is typically used for prototyping, low-volume runs, or manual assembly. Selection depends on the production volume and the feeder configuration of the assembly equipment.