Part A
ADS8344E
德州儀器
- Lifecycle
- Active
- Stock
- 2647 件
- Package
- SSOP-20
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS8341EB/2K5G4 is a viable functional replacement candidate for the ADS8344E, sharing the same 16-bit SAR architecture, 4-channel single-ended/2-channel differential input multiplexer, and SPI-compatible serial interface. Both devices operate across a 2.7 V to 5 V supply range and are offered in the same SSOP-20 package, supporting direct PCB substitution. Designers should validate the reference input configuration and confirm timing margins against the target system clock before committing to production, as the two parts differ in specified throughput rate and reference voltage range.
Resolution and Architecture
High match
Input Channel Configuration
High match
Package and Pinout
High match
Reference Input and Throughput
Validation required
Parts at a glance
Part B
ADS8341EB/2K5G4
德州儀器
- Lifecycle
- Active
- Stock
- 7122 件
- Package
- SSOP-16
- Series
- 資料獲取-模數轉換器（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 | ADS8341EB/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 16 | 16 | Both are 16-bit ADCs, so resolution is equivalent and not a differentiator for substitutability. |
| Number of input channels | 8 (single-ended) / 4 (differential) | 4 (single-ended) / 2 (differential) | Channel count determines how many signals can be multiplexed into one ADC; the ADS8344E supports twice as many inputs. |
| Sampling rate (max) | 100 kSPS | 200 kSPS | Maximum throughput affects the highest signal bandwidth the system can digitize; the ADS8341EB offers twice the sample rate. |
| Supply voltage (analog & digital) | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Identical supply range means both can operate from the same rails, simplifying drop-in replacement. |
| Interface type | SPI / QSPI / Microwire compatible serial | SPI / QSPI / Microwire compatible serial | Matching serial interface protocols allow the same host controller firmware to drive either device. |
| Input type | Single-ended and pseudo-differential | Single-ended and pseudo-differential | Same input configuration supports both single-ended and differential signal conditioning without redesign. |
| Package / pin count | 20-pin SSOP (DBQ) | 16-pin SSOP (DBQ) | Different package pin counts mean the PCB footprint and pinout are not interchangeable, requiring layout changes. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings ensure both parts suit the same industrial-grade environments. |
| Reference input | External reference | External reference | Both require an external voltage reference, so the same reference circuit can be reused. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8344E | ADS8341EB/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 | 2, 4 |
| 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 are the key differences between the ADS8344E and ADS8341EB/2K5G4?
The ADS8344E is a 16-bit, 8-channel successive-approximation ADC with a serial interface, while the ADS8341EB/2K5G4 is a 16-bit, 4-channel ADC in the same family. The ADS8344E provides twice the input channel count (8 single-ended or 4 differential inputs) compared to the ADS8341 (4 single-ended or 2 differential inputs). Both are offered in a 20-pin SSOP package and operate from a 2.7 V to 5.25 V supply, but the channel count and the specific ordering variant (E vs EB/2K5G4) differ.
Are the ADS8344E and ADS8341EB/2K5G4 pin-compatible?
No. Although both devices are housed in a 20-pin SSOP (DBQ) package, the ADS8344E uses the additional pins for channels 5 through 8 (CH5–CH8), whereas the ADS8341 does not provide those channel inputs. The pin functions are therefore not identical, and a direct drop-in replacement is not possible without verifying the pinout against the respective datasheets.
What is the resolution and sampling rate of these ADCs?
Both the ADS8344E and ADS8341EB/2K5G4 are 16-bit successive-approximation analog-to-digital converters. The ADS8344 offers a throughput rate of up to 100 kSPS, and the ADS8341 provides a throughput rate of up to 100 kSPS as well, per the respective Texas Instruments datasheets.
What input configurations do the ADS8344E and ADS8341EB/2K5G4 support?
The ADS8344E supports 8 single-ended inputs or 4 differential input pairs. The ADS8341EB/2K5G4 supports 4 single-ended inputs or 2 differential input pairs. Both devices feature a serial SPI/QSPI/Microwire-compatible interface for communication with a host controller.
What supply voltage range do these devices require?
Both the ADS8344E and ADS8341EB/2K5G4 operate from a single supply voltage in the range of 2.7 V to 5.25 V, according to the Texas Instruments datasheets. This allows operation from 3 V or 5 V systems.
What does the "EB/2K5G4" suffix indicate on the ADS8341EB/2K5G4?
The "EB" denotes the device grade/ordering variant, "2K5" indicates a tape-and-reel quantity of 2,500 units, and "G4" indicates Green (RoHS-compliant, lead-free) packaging per Texas Instruments ordering conventions. The ADS8344E is a standard tube/rail ordering variant of the ADS8344.
Can the ADS8341EB/2K5G4 be used as a replacement for the ADS8344E in an existing design?
Not directly. Because the ADS8344E provides 8 input channels and the ADS8341EB/2K5G4 provides only 4, any design utilizing channels 5–8 on the ADS8344E cannot be supported by the ADS8341. Additionally, the pinouts differ, so PCB layout changes would be required. Replacement should only be considered after validating channel requirements and pin assignments against both datasheets.
What package type do the ADS8344E and ADS8341EB/2K5G4 use?
Both devices are offered in a 20-pin SSOP (Shrink Small Outline Package), designated by the DBQ package code in Texas Instruments documentation. The ADS8341EB/2K5G4 is supplied in tape-and-reel form (2,500 units per reel) with Green/RoHS-compliant construction.