Part A
ADS8320E/2K5
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 4183 個数
- Package
- VSSOP-8
- 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 ADS8320E/2K5 and ADS8320E/250G4 are functionally equivalent, sharing identical core specifications including resolution, interface, package, and operating temperature range. The only distinction lies in packaging format and order quantity, making them interchangeable for design purposes with no electrical or mechanical impact.
Resolution and Architecture
High match
Package Type
High match
Operating Temperature Range
High match
Supply Voltage Range
High match
Parts at a glance
Part B
ADS8320E/250G4
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 6954 個数
- Package
- TSSOP-8
- 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 | ADS8320E/2K5 | ADS8320E/250G4 | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the number of discrete levels the ADC can represent; identical resolution means equivalent measurement precision. |
| Sampling Rate | 100 kSPS | 100 kSPS | Sets the maximum conversion throughput; matching rates ensure the same signal bandwidth can be captured. |
| Number of Inputs / Channels | 1 single-ended | 1 single-ended | Defines how many signals can be measured; identical channel configuration allows direct circuit substitution. |
| Interface Type | SPI | SPI | Determines compatibility with the host microcontroller or DSP; matching interfaces avoid redesign of the digital bus. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Must match the system power rail; identical ranges allow the same supply design to be reused. |
| Package / Case | 8-VSSOP | 8-VSSOP | Footprint and thermal characteristics must match for board-level interchangeability. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be compatible with the existing PCB manufacturing process. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures the device meets environmental requirements of the target application. |
| Packaging / Reel Quantity | Tape & Reel, 2500 units | Tape & Reel, 250 units | Affects order quantity and production planning; the reel size differs though the device itself is functionally identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8320E/2K5 | ADS8320E/250G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | microPOWER™ | microPOWER™ |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Number of Inputs | 1 | 1 |
| Input Type | Pseudo-Differential, Single Ended | Pseudo-Differential, Single Ended |
| Data Interface | SPI | 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 | External |
| 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 ADS8320E/2K5 and the ADS8320E/250G4?
Both parts are the same ADS8320E 16-bit, 100-kSPS micropower sampling analog-to-digital converter in an 8-pin VSSOP (DGK) package. The difference is the ordering and packaging quantity: the ADS8320E/2K5 is supplied in a 2,500-unit tape-and-reel, while the ADS8320E/250G4 is supplied in a 250-unit tape-and-reel with a "G4" suffix indicating green (Pb-free/RoHS-compliant) molding compound. The electrical specifications and functional performance are identical.
Are the ADS8320E/2K5 and ADS8320E/250G4 electrically and functionally interchangeable?
Yes. Both variants share the same ADS8320E die, pinout, package (8-pin VSSOP/DGK), and datasheet specifications, including 16-bit resolution, 100-kSPS throughput, and 2.7-V to 5.25-V supply range. They differ only in reel quantity and the G4 green-material designation, so they are interchangeable in a validated design.
What is the difference between the "2K5" and "250G4" suffixes?
The "2K5" suffix denotes a 2,500-piece tape-and-reel quantity. The "250G4" suffix denotes a 250-piece tape-and-reel quantity with the "G4" green-material designation, indicating Pb-free/RoHS-compliant construction per Texas Instruments ordering conventions. Both are the same ADS8320E device.
Do both variants meet the same RoHS and Pb-free requirements?
The ADS8320E/250G4 carries the "G4" green-material suffix, which denotes Pb-free/RoHS-compliant construction. The ADS8320E/2K5 is the standard ordering code; designers requiring documented green-material compliance should confirm the specific orderable part's compliance status against the manufacturer's datasheet and packaging information before release.
What are the core specifications shared by both the ADS8320E/2K5 and ADS8320E/250G4?
Both are 16-bit successive-approximation ADCs with up to 100-kSPS sampling, a single 2.7-V to 5.25-V supply, low power consumption (approximately 1.2 mW at 100 kSPS and 5 V), a pseudo-differential input, and an SPI-compatible serial interface, housed in an 8-pin VSSOP (DGK) package.
Which variant should be selected for high-volume production versus prototyping?
For high-volume SMT production, the ADS8320E/2K5 (2,500-piece reel) is typically preferred for feeder efficiency and reduced reel-change frequency. For prototyping, small builds, or engineering evaluation, the ADS8320E/250G4 (250-piece reel) offers a smaller minimum quantity. Selection should be based on line setup and inventory policy, since the devices are electrically identical.
Can the ADS8320E/2K5 and ADS8320E/250G4 be used in the same PCB footprint?
Yes. Both are the ADS8320E in the same 8-pin VSSOP (DGK) package with identical pin assignments, so they share the same PCB land pattern and require no layout change when substituting one for the other.