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ADS7807UB/1K Equivalent & Substitute Parts
Part Overview
The ADS7807UB/1K is a 16-bit Analog to Digital Converter manufactured by Texas Instruments, designed for single-ended input data acquisition applications. This device features a successive approximation register (SAR) architecture with integrated sample-and-hold functionality, operating at 40 kSPS with both SPI and parallel data interfaces. The part is classified as obsolete, making identification of active equivalent alternatives essential for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution | 16 Bits |
| Sampling Rate | 40 kSPS |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Data Interface | SPI, Parallel |
| Architecture | SAR |
| Configuration | S/H-ADC |
| Reference Type | External, Internal |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 5V |
| Operating Temperature Range | -40°C to 85°C |
| Package | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution of the ADS7807UB/1K is determined by strict equivalence across the following critical parameters:
- 16-bit resolution
- 40 kSPS sampling rate
- Single-ended input configuration
- SPI and parallel data interface support
- SAR architecture with integrated sample-and-hold
- 5V analog and digital supply voltages
- -40°C to 85°C operating temperature range
- 28-SOIC package footprint
The ADS8507IBDWR and ADS8507IDWR meet all these electrical and mechanical requirements, establishing them as parametric equivalents. Both substitute parts are manufactured by Texas Instruments and maintain identical functional specifications while offering improved product status and compliance characteristics.
Parameter Comparison
| Parameter | ADS7807UB/1K | ADS8507IBDWR | ADS8507IDWR |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 16 Bits | 16 Bits | 16 Bits |
| Sampling Rate | 40 kSPS | 40 kSPS | 40 kSPS |
| Number of Inputs | 1 | 1 | 1 |
| Input Type | Single Ended | Single Ended | Single Ended |
| Data Interface | SPI, Parallel | SPI, Parallel | SPI, Parallel |
| Architecture | SAR | SAR | SAR |
| Configuration | S/H-ADC | S/H-ADC | S/H-ADC |
| Reference Type | External, Internal | External, Internal | External, Internal |
| Analog Supply Voltage | 5V | 5V | 5V |
| Digital Supply Voltage | 5V | 5V | 5V |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS Non-Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 3 (168 Hours) | 2 (1 Year) | 2 (1 Year) |
| Packaging Type | Bulk | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
The ADS7807UB/1K is classified as obsolete, necessitating transition to active alternatives for ongoing production and new designs. Both ADS8507IBDWR and ADS8507IDWR are active products that provide identical electrical functionality while offering superior compliance and reliability characteristics.
The ADS8507IBDWR and ADS8507IDWR differ only in temperature grade designation (B-grade and I-grade respectively), with both meeting ROHS3 compliance requirements and featuring improved moisture sensitivity levels (MSL 2 versus MSL 3). Both substitute parts are supplied in Tape & Reel packaging, suitable for automated assembly processes.
Selection between ADS8507IBDWR and ADS8507IDWR should be based on specific temperature grade requirements for the application. Both parts maintain identical electrical specifications and package footprints, ensuring direct substitution capability.
Frequently Asked Questions (FAQ)
Q: Can ADS8507IBDWR and ADS8507IDWR be used as direct replacements for ADS7807UB/1K?
A: Yes. Both substitute parts are parametric equivalents meeting all electrical and mechanical specifications. Identical pin configurations, package footprints, and functional characteristics enable direct substitution without circuit redesign.
Q: What is the difference between ADS8507IBDWR and ADS8507IDWR?
A: The parts differ in temperature grade designation. ADS8507IBDWR is rated for -40°C to 85°C (B-grade), while ADS8507IDWR is rated for -40°C to 85°C (I-grade). Both operate across the same temperature range specified for the original ADS7807UB/1K.
Q: Are there packaging differences between the original part and substitutes?
A: The ADS7807UB/1K is supplied in bulk packaging, while ADS8507IBDWR and ADS8507IDWR are supplied in Tape & Reel format. Both formats contain identical die and are functionally equivalent. Tape & Reel packaging is standard for automated assembly processes.
Q: What compliance improvements do the substitute parts offer?
A: Both ADS8507IBDWR and ADS8507IDWR are ROHS3 compliant, whereas the original ADS7807UB/1K is RoHS non-compliant. Additionally, substitute parts feature improved moisture sensitivity levels (MSL 2 with 1-year shelf life versus MSL 3 with 168-hour shelf life).
Q: Are the substitute parts pin-compatible with the original ADS7807UB/1K?
A: Yes. All three parts use the 28-SOIC package with identical pin assignments, enabling direct PCB footprint compatibility without layout modifications.
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