Part A
ADS7807U
德州儀器
- Lifecycle
- Active
- Stock
- 7038 件
- Package
- SOIC-28
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7813UB/1K is a viable functional replacement candidate for the ADS7807U, sharing the same 16-bit SAR architecture, 5 V supply, and serial interface, though the ADS7807U offers a faster 40 kSPS throughput versus 25 kSPS and a wider input range option. Validation of the package thermal characteristics and timing margins under the target application's sampling rate is recommended before committing to the substitution.
Resolution and Architecture
High match
Sampling Rate
Validation required
Supply Voltage and Interface
High match
Input Range and Package
Validation required
Parts at a glance
Part B
ADS7813UB/1K
德州儀器
- Lifecycle
- Active
- Stock
- 4253 件
- Package
- SOIC-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 | ADS7807U | ADS7813UB/1K | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit ADCs, so resolution is identical and does not affect substitutability. |
| Sampling Rate | 40 kSPS | 40 kSPS | Identical throughput means either part can meet the same acquisition timing requirements. |
| Input Type | Single-ended | Single-ended | Matching input configuration allows direct replacement without signal conditioning changes. |
| Input Voltage Range | ±10 V | ±10 V | Same full-scale range ensures the same analog front-end scaling can be reused. |
| Supply Voltage | 5 V | 5 V | Identical supply requirements simplify power design and board-level compatibility. |
| Interface | Parallel | Serial (SPI/QSPI) | Different digital interfaces require different host connections and firmware, limiting drop-in substitutability. |
| Package | SOIC-28 | SOIC-28 | Same package footprint allows physical board compatibility. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings ensure equivalent environmental robustness. |
| Integral Nonlinearity (INL) | ±2 LSB | ±1 LSB | The tighter INL of the ADS7813UB/1K provides better linearity, which may matter in precision applications. |
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 | ADS7813UB/1K |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 40k | 40k |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI, Parallel | 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, Internal | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 5V | 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the ADS7807U and the ADS7813UB/1K?
The ADS7807U is a 16-bit successive-approximation ADC from Texas Instruments specified for a 5 V supply with a full-scale input range of ±10 V (bipolar) and a maximum throughput of 40 kSPS, offered in a 28-pin SOIC package. The ADS7813UB/1K is a 16-bit SAR ADC in the same family, specified for a 5 V supply with a ±10 V input range and a maximum throughput of 40 kSPS, supplied in a 28-pin SOIC and shipped in tape-and-reel (1K) format. The "UB" grade denotes the higher-grade specification bin, and the "/1K" suffix indicates tape-and-reel packaging rather than a different die.
Are the ADS7807U and ADS7813UB/1K pin-compatible?
Both devices are offered in a 28-pin SOIC package with the same pinout family assignment, so they are pin-compatible when the package and grade match. Designers should still confirm the exact package drawing and pin functions against the respective Texas Instruments datasheets before substituting one for the other on an existing PCB.
Do the ADS7807U and ADS7813UB/1K have the same resolution and throughput?
Yes. Both are 16-bit successive-approximation ADCs with a maximum throughput of 40 kSPS at a 5 V supply, so resolution and conversion rate are equivalent between the two parts.
What input voltage range do these ADCs support?
Both the ADS7807U and the ADS7813UB/1K are specified with a bipolar ±10 V full-scale input range, making them suitable for industrial signal acquisition where ±10 V sensors or transducers are used.
What does the "UB" grade and "/1K" suffix mean on the ADS7813UB/1K?
The "UB" designation identifies the higher-grade specification bin of the ADS7813, which is characterized to tighter performance limits than the standard grade. The "/1K" suffix denotes tape-and-reel packaging in quantities of 1,000 units, which is a shipping format rather than a functional difference.
Can the ADS7813UB/1K be used as a drop-in replacement for the ADS7807U?
Because both are 16-bit, 40 kSPS, ±10 V, 5 V SAR ADCs in a 28-pin SOIC with a compatible pinout, the ADS7813UB/1K can serve as a functional substitute in many designs. However, the higher-grade "UB" bin may have different specified accuracy limits, and the designer must verify timing, reference, and interface parameters against the target datasheet before committing to a substitution.
What supply voltage do these converters require?
Both the ADS7807U and the ADS7813UB/1K are specified for operation from a single 5 V supply, which simplifies power distribution in mixed-signal systems.
Which part should be selected for a new design requiring tighter accuracy specifications?
The ADS7813UB/1K, with its "UB" higher-grade bin, is specified to tighter performance limits than the standard-grade ADS7807U and is therefore the more appropriate choice when tighter accuracy is required. Final selection should be based on the guaranteed limits published in the respective Texas Instruments datasheets for the target operating conditions.