Part A
ADS8341E
德州儀器
- Lifecycle
- Active
- Stock
- 6648 件
- Package
- SSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The ADS8341E and ADS831E/2K5G4 are both 16-bit SAR analog-to-digital converters, but they differ fundamentally in resolution architecture, channel configuration, and digital interface, so the ADS831E/2K5G4 cannot serve as a direct substitute for the ADS8341E without redesign of the analog front end and host interface.
Different channel count
Different input configuration
Different digital interface
Different package and footprint
Parts at a glance
Part B
ADS831E/2K5G4
德州儀器
- Lifecycle
- Active
- Stock
- 5791 件
- Package
- SSOP-20
- 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 | ADS8341E | ADS831E/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 8 bit | Resolution determines the smallest analog signal change the ADC can distinguish; a 16-bit device offers far finer quantization than an 8-bit device, so they are not functionally interchangeable in precision applications. |
| Number of Input Channels | 4 single-ended / 2 differential | 1 single-ended | Channel count defines how many analog signals can be digitized; the multi-channel ADS8341E can multiplex several inputs while the single-channel ADS831E cannot, affecting system architecture. |
| Sampling Rate | 200 kSPS | 20 MSPS | Maximum sampling rate sets the bandwidth of signals that can be captured; the ADS831E is far faster, making it suitable for high-speed acquisition while the ADS8341E targets slower precision measurements. |
| Interface Type | SPI / QSPI / Microwire (serial) | Parallel | The digital interface must match the host controller; a serial SPI interface versus a parallel bus changes pin count, board layout, and firmware requirements. |
| Supply Voltage | 2.7 V to 5.25 V | 5 V | Supply voltage compatibility determines whether the part can operate in a given system rail; the wide-range ADS8341E supports low-voltage designs while the ADS831E requires a 5 V supply. |
| Input Type | Single-ended / differential | Single-ended | Differential inputs improve noise immunity and common-mode rejection; the ADS8341E supports both configurations while the ADS831E is limited to single-ended inputs. |
| Package / Mounting | 20-SSOP (surface mount) | 20-SSOP (surface mount) | Package and footprint affect PCB layout and assembly; matching packages ease board-level substitution even when electrical characteristics differ. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range indicates environmental robustness; identical industrial ranges mean both parts suit the same operating environments. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8341E | ADS831E/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 8 |
| Sampling Rate(Per Second) | 100k | 80M |
| Number of Inputs | 2, 4 | 1 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | Pipelined |
| Reference Type | External | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 3.6V, 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
Are the ADS8341E and ADS831E/2K5G4 pin-compatible and directly interchangeable?
No. The ADS8341E is a 16-bit, 4-channel serial ADC in a 16-pin SSOP package, while the ADS831E/2K5G4 is an 8-bit, 1-channel parallel ADC in a 20-pin SSOP package. They differ in resolution, channel count, digital interface, and package pinout, so they are not pin-compatible or directly interchangeable.
How do the resolutions and channel counts of the ADS8341E and ADS831E/2K5G4 compare?
The ADS8341E provides 16-bit resolution with a 4-channel input multiplexer (single-ended or differential configurations). The ADS831E/2K5G4 provides 8-bit resolution with a single analog input channel. The ADS8341E therefore offers significantly higher resolution and more input channels.
What digital interfaces do the ADS8341E and ADS831E/2K5G4 use?
The ADS8341E uses a serial SPI-compatible interface for data output and control. The ADS831E/2K5G4 uses a parallel 8-bit digital output interface. This difference affects microcontroller or FPGA pin requirements and firmware design.
What are the package differences between the ADS8341E and ADS831E/2K5G4?
The ADS8341E is supplied in a 16-pin SSOP package, while the ADS831E/2K5G4 is supplied in a 20-pin SSOP package. The differing pin counts and land patterns mean the two devices are not drop-in replacements on the same PCB footprint.
Do the ADS8341E and ADS831E/2K5G4 have the same analog input configuration?
No. The ADS8341E features a 4-channel input multiplexer that can be configured for single-ended or differential inputs. The ADS831E/2K5G4 has a single analog input channel. Designs requiring multiple input channels cannot use the ADS831E/2K5G4 without external multiplexing.
Can the ADS831E/2K5G4 replace the ADS8341E in an existing 16-bit design?
No. The ADS831E/2K5G4 is an 8-bit converter, so replacing a 16-bit ADS8341E with it would reduce system resolution by 8 bits. Additionally, the parallel interface and different package would require hardware and firmware redesign, so it is not a viable substitute where 16-bit accuracy is required.
Which device is better suited for multi-channel data acquisition systems?
The ADS8341E is better suited for multi-channel data acquisition because its 4-channel input multiplexer allows multiple signals to be sampled by a single ADC, and its 16-bit resolution supports higher-precision measurements. The ADS831E/2K5G4, with a single channel and 8-bit resolution, is suited to simpler, lower-resolution single-channel applications.