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ADS7817EB/2K5 Equivalent & Substitute Parts
Part Overview
The ADS7817EB/2K5 is a 12-bit Analog to Digital Converter manufactured by Texas Instruments, configured as a single-input SAR (Successive Approximation Register) architecture with SPI data interface. This device operates with external voltage reference and is housed in an 8-VSSOP surface mount package. The part is Active status and ROHS3 compliant, with unlimited moisture sensitivity rating (MSL 1).
Substitute parts are necessary when the primary part number becomes unavailable due to inventory constraints, supply chain disruptions, or manufacturing discontinuation. Texas Instruments offers equivalent variants within the ADS7816 and ADS7817 product families that maintain identical electrical and mechanical specifications while differing in packaging tape reel configurations and moisture sensitivity classifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate (Per Second) | 200k |
| Number of Inputs | 1 |
| Input Type | Differential |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | External |
| Voltage - Supply, Analog | 5V |
| Voltage - Supply, Digital | 5V |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 8-VSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution eligibility for the ADS7817EB/2K5 is determined by strict equivalence across the following critical parameters:
- 12-bit resolution
- 200k samples per second sampling rate
- Single differential input configuration
- SPI serial data interface
- SAR conversion architecture
- External voltage reference requirement
- 5V analog and digital supply voltages
- -40°C to 85°C operating temperature range
- 8-VSSOP surface mount package
All substitute parts listed maintain identical electrical performance and mechanical compatibility. Variations exist only in base product number designation (ADS7816 vs. ADS7817), temperature grade suffix (E vs. EB vs. EC), and tape reel configuration suffix (250 vs. 2K5). These designations reflect manufacturing lot tracking and packaging reel quantities but do not alter functional equivalence or pin compatibility.
Parameter Comparison
| Part Number | Manufacturer | Bits | Sampling Rate | Inputs | Input Type | Data Interface | Architecture | Voltage Analog | Voltage Digital | Temp Range | Package | MSL | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADS7817EB/2K5 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 1041 |
| ADS7816E/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 2 | 2810 |
| ADS7816E/2K5 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 2 | 2628 |
| ADS7816EB/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 2 | 2400 |
| ADS7816EB/2K5 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 2 | 878 |
| ADS7816EC/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 2 | 2036 |
| ADS7817E/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 2155 |
| ADS7817E/2K5 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 1148 |
| ADS7817EB/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 4600 |
| ADS7817EC/250 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 1302 |
| ADS7817EC/2K5 | Texas Instruments | 12 | 200k | 1 | Differential | SPI | SAR | 5V | 5V | -40°C ~ 85°C | 8-VSSOP | 1 | 942 |
Engineering Selection Recommendations
All listed substitute parts are Active status products from Texas Instruments and maintain ROHS3 compliance and REACH unaffected certification status. Selection between equivalent parts should be based on inventory availability and moisture sensitivity level (MSL) requirements for your specific assembly and storage environment.
Parts designated with MSL 1 (ADS7817EB/2K5, ADS7817E/250, ADS7817E/2K5, ADS7817EC/250, ADS7817EC/2K5) have unlimited shelf life and are suitable for applications with extended storage periods or high-humidity environments. Parts designated with MSL 2 (ADS7816E/250, ADS7816E/2K5, ADS7816EB/250, ADS7816EB/2K5, ADS7816EC/250) require one-year maximum storage under controlled moisture conditions.
The tape reel configuration suffix (250 or 2K5) indicates packaging quantity per reel and does not affect electrical or mechanical performance. Selection should align with your procurement volume requirements and supply chain logistics.
Frequently Asked Questions (FAQ)
Q: Can ADS7816 series parts directly replace ADS7817 series parts?
A: Yes. Both ADS7816 and ADS7817 base product numbers share identical electrical specifications, pin configurations, and 8-VSSOP package dimensions. The primary difference is moisture sensitivity level classification. ADS7816 variants carry MSL 2 rating (1-year storage limit), while ADS7817 variants carry MSL 1 rating (unlimited storage). Functional performance and circuit compatibility are equivalent.
Q: What does the suffix designation (E, EB, EC) indicate?
A: The temperature grade suffix designates the manufacturing temperature qualification and quality assurance level. All variants listed operate across the identical -40°C to 85°C temperature range. The suffix reflects internal Texas Instruments manufacturing and testing protocols but does not alter functional specifications or performance characteristics.
Q: Does the tape reel configuration (250 vs. 2K5) affect compatibility?
A: No. The reel configuration suffix indicates packaging quantity only. 250 denotes 250 units per reel; 2K5 denotes 2500 units per reel. Both configurations contain identical die and package specifications. Selection should be based on procurement volume and supply chain requirements.
Q: Are all substitute parts pin-compatible with the ADS7817EB/2K5?
A: Yes. All listed substitute parts utilize the 8-VSSOP package with identical pin assignments, signal definitions, and electrical interface specifications. Direct socket substitution is supported without circuit modification.
Q: What compliance certifications apply to all substitute parts?
A: All substitute parts maintain ROHS3 compliance and REACH unaffected status. ECCN classification is EAR99 for all variants. HTSUS tariff codes are 8542.39.0001 or 8542.39.0030 depending on specific part designation.
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