Part A
ADS8344E
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 2647 PCS
- Package
- SSOP-20
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8344E and ADS8344E/2K5G4 are functionally equivalent, sharing identical die, package, and electrical specifications; the only distinction is tape-and-reel packaging quantity, making them a valid drop-in replacement candidate for design and production use.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Operating Temperature Range
High match
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 | ADS8344E | 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 ensures the same system-level input capability. |
| Sampling Rate | 100 kSPS | 100 kSPS | Sets the maximum conversion throughput; identical rates mean the same signal bandwidth and timing budget can be supported. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Determines compatibility with the system power rail; matching ranges allow direct drop-in use in the same supply design. |
| Interface Type | SPI (serial) | SPI (serial) | Defines the digital communication protocol with the host; identical interface ensures firmware and pin-level compatibility. |
| Package / Mounting | 20-SSOP (surface mount) | 20-SSOP (surface mount) | Affects PCB footprint and assembly; matching package allows the same board layout to be reused. |
| Packaging / Ordering Format | Tube / tray (bulk) | Tape and reel (2,500 units) | Determines how parts are supplied for manufacturing; reel packaging suits automated high-volume assembly while bulk suits prototyping or low-volume runs. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental limits for reliable operation; identical ranges mean the same application environments are supported. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8344E | ADS8344E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 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 | 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 |
Frequently asked questions
What is the difference between ADS8344E and ADS8344E/2K5G4?
Both are the same ADS8344 16-bit, 8-channel serial ADC from Texas Instruments in a 20-pin SSOP (DBQ) package. The ADS8344E is the standard tube/rail packaging orderable, while ADS8344E/2K5G4 is the same die and package supplied on a 2,500-unit tape-and-reel with a Green (RoHS-compliant, NiPdAu lead finish) designation. Functionally and electrically they are identical; the suffix only denotes packing quantity and environmental/lead-finish classification.
Are ADS8344E and ADS8344E/2K5G4 electrically and functionally interchangeable?
Yes. Both share the same datasheet specifications: 16-bit SAR architecture, 8 single-ended or 4 differential inputs, up to 100 kSPS throughput, SPI/QSPI/Microwire-compatible serial interface, 2.7 V to 5.25 V single supply, and the same 20-pin SSOP pinout. The only differences are packaging format (tube vs. 2,500-piece reel) and the G4 Green/RoHS lead-finish designation on the /2K5G4 variant.
What are the key performance specifications of the ADS8344?
Per the Texas Instruments datasheet: 16-bit resolution, 8 single-ended or 4 pseudo-differential inputs, up to 100 kSPS sampling rate, ±2 LSB INL (typical), ±1 LSB DNL, low power consumption (approximately 1.2 mW at 100 kSPS with 5 V supply), 2.7 V to 5.25 V analog supply range, and an SPI-compatible serial interface. Internal reference is not provided; an external reference is required.
Does the /2K5G4 suffix affect the electrical performance or datasheet parameters?
No. The G4 suffix indicates Green (RoHS-compliant) molding compound and NiPdAu lead finish, and 2K5 indicates a 2,500-piece tape-and-reel. These are packaging and environmental compliance designators only; the silicon, electrical specifications, and datasheet limits are identical to the ADS8344E.
Which variant should be selected for high-volume automated assembly?
ADS8344E/2K5G4 is intended for high-volume SMT production because it is supplied on a 2,500-piece tape-and-reel compatible with automated pick-and-place equipment, and its G4 designation satisfies RoHS requirements. ADS8344E in tube packaging is typically used for prototyping, low-volume runs, or manual assembly.
What package and pinout do ADS8344E and ADS8344E/2K5G4 use?
Both use the 20-pin SSOP (DBQ) package with identical pin assignments, including the 8 analog input channels (CH0–CH7), external reference inputs (VREF), serial interface pins (DIN, DOUT, DCLK, CS, BUSY), and supply/ground pins. Because the package and pinout are identical, PCB land patterns are interchangeable between the two orderables.
What external reference and supply conditions are required for the ADS8344?
The ADS8344 requires an external voltage reference applied to VREF (with a corresponding reference ground), and operates from a single 2.7 V to 5.25 V supply (VCC). The digital interface levels are referenced to the supply, and the analog input range is set by the applied VREF. Designers must ensure VREF and VCC are within the limits specified in the TI datasheet for the target configuration.
Can ADS8344E and ADS8344E/2K5G4 be mixed on the same PCB assembly?
Yes. Since both orderables are the same device with identical package, pinout, and electrical specifications, they can be used interchangeably on the same board. The choice between them is driven by procurement factors such as reel vs. tube packaging, RoHS/G4 compliance requirements, and available inventory rather than by any technical difference.