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/250G4 are functionally equivalent 12-bit, 8-channel SAR ADCs with an I2C interface, sharing the same resolution, channel count, and supply range. The primary distinction is qualification and packaging: the Q1 variant is AEC-Q100 qualified for automotive use in a TSSOP-16 package, while the EB variant is an industrial-grade device in a SSOP-16 package. Designers should confirm package footprint compatibility and qualification requirements before substituting.
Resolution and Channel Count
High match
Interface Type
High match
Package Type
Validation required
Qualification Grade
Validation required
Parts at a glance
Part B
ADS7828EB/250G4
德州儀器
- Lifecycle
- Active
- Stock
- 7266 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/250G4 | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide the same 12-bit resolution, so measurement granularity is identical. |
| Number of Input Channels | 8 single-ended / 4 differential | 8 single-ended / 4 differential | Channel count determines how many analog signals can be multiplexed into the ADC without external muxing. |
| Sampling Rate | 50 kSPS | 50 kSPS | Identical throughput means both parts support the same signal bandwidth and update rate requirements. |
| Interface Type | I2C | I2C | The same serial interface allows drop-in compatibility with existing I2C bus designs and firmware. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply ranges ensure both parts operate in the same system power rails without level shifting. |
| Reference Type | External | External | Both require an external reference, so the same reference circuit and accuracy budget can be reused. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range affects suitability for industrial versus commercial environments; both cover the industrial range. |
| Package / Mounting | 16-TSSOP (surface mount) | 16-TSSOP (surface mount) | Package and footprint compatibility determine whether the parts are physically interchangeable on the PCB. |
| Qualification / Grade | Automotive qualified (AEC-Q100) | Industrial grade | Automotive qualification indicates enhanced reliability screening, which matters for safety-critical or harsh-environment designs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS7828EIPWRQ1 | ADS7828EB/250G4 |
|---|---|---|
| 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/250G4?
The ADS7828EIPWRQ1 is an automotive-qualified version (AEC-Q100) supplied in a TSSOP-16 package and marked with the Q1 suffix, while the ADS7828EB/250G4 is the industrial-grade equivalent supplied in a TSSOP-16 package and designated with the G4 lead-free/RoHS-compliant suffix. Both are 12-bit, 8-channel, I2C-compatible SAR ADCs from Texas Instruments with the same core conversion architecture and pinout.
Are the ADS7828EIPWRQ1 and ADS7828EB/250G4 pin-compatible?
Yes. Both devices are offered in the same TSSOP-16 (PW) package with identical pin assignments, so they are pin-compatible when the package and temperature grade requirements of the target design are satisfied.
Do both parts share the same resolution and channel count?
Yes. Both the ADS7828EIPWRQ1 and ADS7828EB/250G4 are 12-bit successive-approximation register (SAR) ADCs with 8 single-ended input channels (or 4 differential pairs), operating from a single 2.7 V to 5.5 V supply.
What is the difference in qualification and operating temperature range?
The ADS7828EIPWRQ1 is qualified to AEC-Q100 for automotive applications and is specified over the -40°C to +125°C temperature range. The ADS7828EB/250G4 is the industrial-grade variant specified over the -40°C to +85°C temperature range. Designers should confirm the exact grade required by the end application.
Are both devices RoHS-compliant and lead-free?
Yes. The ADS7828EB/250G4 carries the G4 suffix indicating lead-free (Pb-free) and RoHS-compliant construction, and the ADS7828EIPWRQ1 is also supplied as a RoHS-compliant, lead-free device in the TSSOP-16 package. Both are compatible with lead-free reflow soldering processes.
Can the ADS7828EB/250G4 be used as a drop-in replacement for the ADS7828EIPWRQ1 in an automotive design?
No, not for automotive-qualified designs. The ADS7828EB/250G4 is an industrial-grade part and does not carry AEC-Q100 qualification, so it should not be substituted where automotive qualification is required. The ADS7828EIPWRQ1 should be retained for automotive applications.
Do both parts use the same I2C interface and reference configuration?
Yes. Both devices feature an I2C-compatible serial interface and support an internal reference as well as an external reference option, with the same register map and command set, allowing firmware developed for one part to operate with the other when the qualification and temperature requirements are met.