Part A
ADS7828EIPWRQ1
德州儀器
- Lifecycle
- Active
- Stock
- 5341 件
- Package
- TSSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Compatible functional replacement candidate
The ADS7828EIPWRQ1 and ADS7828EB/2K5G4 are functionally compatible 12-bit, 8-channel SAR ADCs sharing the same core architecture, resolution, channel count, and I2C interface, making them viable substitutes in most designs. The primary distinction lies in qualification grade and packaging: the ADS7828EIPWRQ1 is an automotive-qualified AEC-Q100 device in a TSSOP-16 package, while the ADS7828EB/2K5G4 is an industrial-grade part in a TSSOP-16 package supplied on tape and reel. Designers should confirm the required qualification level and verify package and reel orientation before substitution.
Resolution and Channel Count
High match
Interface Type
High match
Package Type
High match
Qualification Grade
Validation required
Parts at a glance
Part B
ADS7828EB/2K5G4
德州儀器
- Lifecycle
- Active
- Stock
- 5402 件
- Package
- TSSOP-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 | ADS7828EIPWRQ1 | ADS7828EB/2K5G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Determines the smallest analog signal change the ADC can distinguish; identical resolution means equivalent measurement precision. |
| Number of Input Channels | 8 (single-ended) / 4 (pseudo-differential) | 8 (single-ended) / 4 (pseudo-differential) | Defines how many analog signals can be multiplexed into the converter; matching channel count ensures the same system-level input capacity. |
| Sampling Rate | 50 kSPS | 50 kSPS | Sets the maximum conversion throughput; identical rates mean the same signal bandwidth and timing budget can be supported. |
| Interface Type | I2C (2-wire) | I2C (2-wire) | Determines the digital communication protocol and pin requirements; matching I2C interface allows drop-in bus compatibility. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines the operating power domain; identical ranges allow the same rail to power either device without level shifting. |
| Reference Type | External (internal reference option) | External (internal reference option) | Affects accuracy and the need for an external reference; matching reference architecture preserves measurement accuracy and BOM structure. |
| Operating Temperature Range | -40 °C to +85 °C (automotive Q1 grade) | -40 °C to +85 °C (industrial grade) | Indicates qualified environmental limits and qualification level; the Q1 automotive grade carries stricter qualification than the industrial grade, which matters for automotive vs. industrial applications. |
| Package / Pin Count | TSSOP-16 (PW) | TSSOP-16 (DB) | Determines PCB footprint and assembly compatibility; both are 16-pin TSSOP but different package designators may affect footprint and qualification documentation. |
| Qualification / Grade | AEC-Q100 qualified (automotive) | Standard industrial grade | AEC-Q100 qualification is required for automotive use; the industrial-grade part is not qualified to the same standard, so substitutability depends on the target application's qualification requirements. |
| Packaging / Ordering Option | Tape and reel (RQ1 suffix) | Tape and reel (2K5G4 suffix) | Affects manufacturing handling and reel quantity; different ordering suffixes indicate distinct packaging/qualification flows even when the die is functionally similar. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7828EIPWRQ1 | ADS7828EB/2K5G4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 50k | 50k |
| Number of Inputs | 8 | 8 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | I²C | I²C |
| Configuration | MUX-S/H-ADC | MUX-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 | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Series | Automotive, AEC-Q100 | - |
Frequently asked questions
What are the key differences between the ADS7828EIPWRQ1 and the ADS7828EB/2K5G4?
The ADS7828EIPWRQ1 is an automotive-qualified (AEC-Q100) variant supplied in a TSSOP-16 package and marked with the Q1 automotive suffix, while the ADS7828EB/2K5G4 is the industrial-grade version supplied in a TSSOP-16 package and delivered on a 2,500-unit tape-and-reel. Both are 12-bit, 8-channel, I2C-compatible SAR ADCs from Texas Instruments with the same core converter architecture; the primary differences are qualification grade, ordering suffix, and packaging/reel configuration.
Are the ADS7828EIPWRQ1 and ADS7828EB/2K5G4 functionally interchangeable in a design?
Functionally, both devices share the same 12-bit SAR ADC core, 8 single-ended or 4 pseudo-differential input channels, I2C interface, and internal reference, so the conversion function is equivalent. However, the Q1 suffix denotes automotive qualification and the EB suffix denotes the industrial grade, so substitution must be validated against the target application's qualification, temperature, and reliability requirements before use.
What is the resolution and channel configuration of these ADCs?
Both the ADS7828EIPWRQ1 and ADS7828EB/2K5G4 are 12-bit successive-approximation register (SAR) analog-to-digital converters offering 8 single-ended input channels or 4 pseudo-differential input pairs, selectable via the I2C command byte.
What digital interface do the ADS7828EIPWRQ1 and ADS7828EB/2K5G4 use?
Both devices use an I2C-compatible two-wire serial interface supporting standard, fast, and high-speed modes, with a 7-bit address that is configurable via the A0 and A1 address pins, allowing multiple devices on the same bus.
What is the difference between the Q1 and non-Q1 suffixes on these parts?
The Q1 suffix on the ADS7828EIPWRQ1 indicates the device is qualified to the automotive AEC-Q100 standard and is intended for automotive and other high-reliability applications. The ADS7828EB/2K5G4 carries the standard industrial qualification and is intended for general industrial and commercial applications.
What package and reel configuration do these two ordering codes specify?
Both the ADS7828EIPWRQ1 and ADS7828EB/2K5G4 are supplied in the TSSOP-16 (PW) package. The "R" in the Q1 part number and the "2K5" in the EB part number both denote tape-and-reel delivery; the EB/2K5G4 is specified as a 2,500-unit reel, and the "G4" suffix denotes lead-free (RoHS-compatible) construction.
Do both devices share the same supply voltage and reference requirements?
Yes. Both the ADS7828EIPWRQ1 and ADS7828EB/2K5G4 operate from a single 2.7 V to 5.5 V supply and feature an on-chip reference, with the option to use an external reference; the analog input range and reference configuration are common to both variants.
Can the ADS7828EB/2K5G4 be used as a drop-in replacement for the ADS7828EIPWRQ1 in an automotive design?
No. The ADS7828EB/2K5G4 is the industrial-grade variant and does not carry the AEC-Q100 automotive qualification of the ADS7828EIPWRQ1. For automotive or other applications requiring Q1 qualification, the ADS7828EIPWRQ1 should be used, and any substitution must be validated against the applicable qualification and reliability requirements.