Part A
ADS8341E
Texas Instruments
- Lifecycle
- Active
- Stock
- 6648 PCS
- Package
- SSOP-16
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8343EBG4 is a viable functional replacement candidate for the ADS8341E, 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-16 package, allowing direct board-level substitution. Designers should validate the reference voltage configuration and confirm the interface timing against the target system, as the two parts differ in their external reference arrangement and maximum throughput rate.
Resolution and Architecture
High match
Input Channel Configuration
High match
Reference Voltage Configuration
Validation required
Maximum Throughput Rate
Validation required
Parts at a glance
Part B
ADS8343EBG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 4868 PCS
- Package
- SSOP-16
- Series
- Data Acquisition - Analog to Digital Converters (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 | ADS8341E | ADS8343EBG4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit ADCs, so they offer the same nominal measurement precision and are interchangeable in resolution-critical designs. |
| Number of Input Channels | 4 single-ended / 2 differential | 4 single-ended / 2 differential | Channel count and configuration determine how many signals can be measured and whether differential inputs are available. |
| Sampling Rate | 100 kSPS | 100 kSPS | Maximum throughput affects the ability to capture fast-changing signals; identical rates mean equivalent speed capability. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Operating supply range determines compatibility with the system power rail and logic levels. |
| Interface Type | SPI / QSPI / Microwire compatible serial | SPI / QSPI / Microwire compatible serial | The serial interface must match the host controller; identical interfaces allow drop-in digital connection. |
| Input Type | Single-ended / Pseudo-differential | Single-ended / Pseudo-differential | Input configuration affects how sensor or signal grounds are handled and the achievable common-mode rejection. |
| Package / Mounting | SSOP-16 (Surface Mount) | SSOP-16 (Surface Mount) | Package and footprint must match the PCB layout for physical substitutability. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range determines suitability for industrial versus commercial environments. |
| Reference Input | External reference | External reference | An external reference allows the full-scale range to be set by the system, affecting accuracy and dynamic range. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8341E | ADS8343EBG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 2, 4 | 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 ADS8341E and ADS8343EBG4?
The ADS8341E is a 16-bit, 4-channel successive-approximation ADC with a serial interface, specified for operation from a single +2.7V to +5V supply. The ADS8343EBG4 is a 16-bit, 4-channel SAR ADC with a serial interface that supports both single-supply (+2.7V to +5V) and bipolar (±2.5V) operation, and it is supplied in a 16-pin QSOP package in the EBG4 ordering variant. Both are 16-bit, 4-channel SAR converters, but the ADS8343 offers greater supply flexibility, including bipolar analog input ranges.
Are the ADS8341E and ADS8343EBG4 pin-compatible?
No. The ADS8341E is offered in a 16-pin SSOP package, while the ADS8343EBG4 is offered in a 16-pin QSOP package. Although both are 16-pin serial-interface SAR ADCs, the package types differ, so PCB land patterns and pin assignments must be verified against the respective manufacturer datasheets before any substitution is considered.
What is the resolution and architecture of both devices?
Both the ADS8341E and ADS8343EBG4 are 16-bit successive-approximation register (SAR) analog-to-digital converters with 4 single-ended input channels (configurable as 2 differential pairs). They share the same 16-bit SAR conversion architecture and serial interface family from Texas Instruments.
Do both parts support the same analog input configuration?
Both devices provide 4 input channels that can be configured as single-ended or as two differential input pairs via the serial control interface. However, the ADS8343EBG4 additionally supports bipolar analog supply operation (±2.5V), which allows bipolar input signal ranges, whereas the ADS8341E is specified for single-supply operation only.
What supply voltage ranges do the ADS8341E and ADS8343EBG4 support?
The ADS8341E operates from a single supply of +2.7V to +5V. The ADS8343EBG4 supports both a single supply of +2.7V to +5V and a bipolar supply of ±2.5V, giving it broader supply flexibility for applications requiring bipolar signal conversion.
What serial interface do these ADCs use?
Both the ADS8341E and ADS8343EBG4 use a serial peripheral interface compatible with SPI, QSPI, and Microwire, allowing direct connection to most microcontrollers and DSPs. The interface includes a chip-select, serial clock, data-in, and data-out signal for configuration and conversion result readout.
Can the ADS8343EBG4 be used as a drop-in replacement for the ADS8341E?
Not as a direct drop-in replacement. Although both are 16-bit, 4-channel SAR ADCs with serial interfaces, they differ in package type (SSOP vs. QSOP) and in supply/input range capability (single-supply vs. single or bipolar supply). A substitution requires verification of package footprint, pin functions, supply configuration, and input range against the target design and the manufacturer datasheets.
What are typical applications for these 16-bit SAR ADCs?
These devices are typically used in industrial process control, data acquisition systems, battery-powered instrumentation, medical instrumentation, and portable measurement equipment where 16-bit resolution, multiple input channels, and a serial interface are required. The ADS8343EBG4's bipolar supply capability makes it suitable for applications with bipolar sensor signals.