Part A
ADS7807U
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 7038 個数
- Package
- SOIC-28
- Series
- データ取得 - アナログ/デジタルコンバータ (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS7807U and ADS7810UB/1K are both 12-bit successive-approximation ADCs offering strong functional overlap, but they differ in resolution-adjacent architecture details, package footprint, and reference configuration. The ADS7810UB/1K is a viable functional candidate for the ADS7807U in many designs, provided the board layout accommodates the package difference and the reference and interface requirements are validated against the target system.
Resolution and ADC Architecture
High match
Package Type
Validation required
Reference Configuration
Validation required
Digital Interface
High match
Parts at a glance
Part B
ADS7810UB/1K
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 9144 個数
- Package
- SOIC-28
- Series
- データ取得 - アナログ/デジタルコンバータ (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 | ADS7807U | ADS7810UB/1K | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 12 bit | Resolution determines the smallest measurable signal step; a 16-bit ADC provides 16x finer quantization than a 12-bit ADC, directly affecting measurement accuracy and dynamic range. |
| Sampling Rate | 40 kSPS | 800 kSPS | Maximum throughput limits the bandwidth of signals that can be digitized; the ADS7810 supports much faster sampling, enabling higher-frequency signal acquisition. |
| Input Type | Single-ended | Single-ended | Input configuration affects how the analog source connects; both are single-ended, so the same signal conditioning topology can be reused. |
| Interface | Parallel | Parallel | The digital interface must match the host controller; both use a parallel interface, simplifying drop-in replacement at the digital side. |
| Supply Voltage | 5 V | 5 V | Supply voltage compatibility ensures the part operates within the existing power rail without additional regulation. |
| Reference Type | Internal | Internal | An internal reference simplifies system design by eliminating external reference circuitry; both devices include one. |
| Package | SOIC-28 | SOIC-28 | Package footprint must match the PCB layout for physical substitutability; both use the same SOIC-28 outline. |
| Operating Temperature Range | -40 to +85 °C | -40 to +85 °C | Temperature range determines suitability for industrial environments; identical ranges mean equivalent environmental robustness. |
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 | ADS7807U | ADS7810UB/1K |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 12 |
| Sampling Rate(Per Second) | 40k | 800k |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI, Parallel | 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 | SAR |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | ±5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 70°C |
Frequently asked questions
What are the key differences between the ADS7807U and the ADS7810UB/1K?
The ADS7807U is a 16-bit, 40 kSPS successive-approximation ADC with a parallel interface, while the ADS7810UB/1K is a 12-bit, 1 MSPS ADC with a parallel interface. The ADS7807U offers higher resolution (16-bit vs 12-bit), whereas the ADS7810UB/1K provides a significantly faster sampling rate (1 MSPS vs 40 kSPS). Both are offered in SOIC packages by Texas Instruments (Burr-Brown product line).
Are the ADS7807U and ADS7810UB/1K pin-compatible?
No. The ADS7807U is a 16-bit device in a 28-pin SOIC package, and the ADS7810UB/1K is a 12-bit device in a 28-pin SOIC package, but their pin functions and internal architectures differ. They are not direct drop-in replacements, and pin assignments must be verified against the respective datasheets before any substitution.
What is the resolution and sampling rate of each device?
The ADS7807U provides 16-bit resolution at a maximum throughput of 40 kSPS. The ADS7810UB/1K provides 12-bit resolution at a maximum throughput of 1 MSPS. The choice depends on whether the application prioritizes dynamic range/accuracy (ADS7807U) or conversion speed (ADS7810UB/1K).
What input voltage range and interface do these ADCs support?
Both devices are successive-approximation ADCs with parallel digital output interfaces. The ADS7807U supports a bipolar ±10 V input range with a 16-bit parallel output. The ADS7810UB/1K supports a unipolar 0 V to 5 V input range with a 12-bit parallel output. Input range and reference configuration should be confirmed from the official datasheets for the specific grade.
What package and operating temperature range do these parts use?
Both the ADS7807U and ADS7810UB/1K are supplied in 28-pin SOIC packages. The "U" and "UB" suffixes denote the SOIC package and industrial-grade temperature range in the Burr-Brown/Texas Instruments nomenclature. Exact temperature grade and package drawing should be verified against the manufacturer datasheet for the ordered part number.
Can the ADS7810UB/1K replace the ADS7807U in an existing design?
Not directly. The ADS7810UB/1K has 12-bit resolution versus 16-bit for the ADS7807U, a different input voltage range (0–5 V vs ±10 V), and a different maximum sampling rate (1 MSPS vs 40 kSPS). A replacement would require revalidation of resolution, input scaling, timing, and PCB layout against the target design requirements.
Which device is better suited for high-speed data acquisition?
The ADS7810UB/1K is better suited for high-speed data acquisition because its 1 MSPS throughput is substantially higher than the 40 kSPS maximum of the ADS7807U. However, the ADS7807U offers 16-bit resolution for applications requiring higher accuracy at lower sampling rates.
What are the typical applications for each ADC?
The ADS7807U (16-bit, 40 kSPS) is typically used in precision instrumentation, industrial process control, and medical measurement systems where accuracy is critical. The ADS7810UB/1K (12-bit, 1 MSPS) is typically used in faster data acquisition systems, waveform capture, and motor control applications where throughput is prioritized over resolution.