Part A
ADS1219IPWR
德州儀器
- Lifecycle
- Active
- Stock
- 5923 件
- Package
- TSSOP-16
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The ADS1219IPWR and ADS1282HIPW are not drop-in replacements for one another. The ADS1219IPWR is a 24-bit, 4-channel delta-sigma ADC with an I2C interface in a TSSOP-16 package, while the ADS1282HIPW is a 31-bit, 2-channel delta-sigma ADC with an SPI interface in a CFP-28 package. Their differences in resolution, channel count, digital interface, and package footprint make them functionally incompatible for direct substitution.
Different resolution
Different channel count
Different digital interface
Different package footprint
Parts at a glance
Part B
ADS1282HIPW
德州儀器
- Lifecycle
- Active
- Stock
- 6044 件
- Package
- TSSOP-28
- 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 | ADS1219IPWR | ADS1282HIPW | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 31 | Higher resolution enables finer measurement of small signal changes, which is critical for precision seismic and high-dynamic-range applications. |
| Number of input channels | 4 (differential) | 2 (differential) | Channel count determines how many independent signals can be measured simultaneously without external multiplexing. |
| Maximum sample rate | 1 kSPS | 4 kSPS | Sample rate sets the bandwidth of signals that can be captured; higher rates support faster-changing inputs and wider signal bandwidth. |
| Interface type | I2C | SPI | The digital interface must match the host controller; I2C and SPI are not directly interchangeable without hardware or firmware changes. |
| Supply voltage (analog) | 2.7 V to 5.5 V | 5 V (4.75 V to 5.25 V) | Supply requirements affect power rail design and compatibility with the rest of the system; a narrower 5 V requirement limits low-voltage operation. |
| PGA / gain stage | Integrated PGA (gain 1 to 128) | Integrated PGA (gain 1 to 64) | The programmable gain amplifier allows small signals to be amplified before conversion; different gain ranges affect sensitivity to low-level inputs. |
| Package | TSSOP-16 | TSSOP-28 | Package footprint and pin count must match the PCB layout; different packages are not drop-in compatible. |
| Operating temperature range | -40 °C to +125 °C | -40 °C to +85 °C | The temperature range determines suitability for harsh environments; a narrower range may not meet industrial or outdoor requirements. |
| Typical application focus | General-purpose precision sensing, portable instrumentation | Seismic and energy exploration, high-resolution data acquisition | Application focus indicates the intended signal chain and performance trade-offs, helping assess functional substitutability in a given design. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1219IPWR | ADS1282HIPW |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 24 | - |
| Sampling Rate(Per Second) | 1k | - |
| Number of Inputs | 4 | - |
| Input Type | Differential, Single Ended | - |
| Data Interface | I²C | - |
| Configuration | MUX-ADC | - |
| Ratio - S / H: ADC | 0:1 | - |
| Number of A/D Converters | 1 | - |
| Architecture | Sigma-Delta | - |
| Reference Type | External, Internal | - |
| Voltage - Supply, Analog | 2.3V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.3V ~ 5.5V | - |
| Features | PGA | - |
| Operating Temperature | -40°C ~ 125°C | - |
Frequently asked questions
What are the primary differences between the ADS1219IPWR and the ADS1282HIPW?
The ADS1219IPWR is a 24-bit, 4-channel, delta-sigma ADC with an I2C interface, housed in a TSSOP-16 package, and specified for a data rate of up to 1 kSPS. The ADS1282HIPW is a 31-bit, 2-channel, delta-sigma ADC with an SPI interface, housed in a TSSOP-28 package, designed for high-resolution seismic and energy exploration applications with data rates up to 4 kSPS. They differ in resolution, channel count, interface, package, and target application.
Are the ADS1219IPWR and ADS1282HIPW pin-to-pin or package compatible?
No. The ADS1219IPWR uses a 16-pin TSSOP package, while the ADS1282HIPW uses a 28-pin TSSOP package. The pin counts, pin functions, and package dimensions differ, so they are not drop-in replacements and require different PCB footprints.
Can the ADS1219IPWR directly replace the ADS1282HIPW in an existing design?
No. Beyond package and pinout differences, the two devices use different serial interfaces (I2C for the ADS1219IPWR versus SPI for the ADS1282HIPW), have different channel counts (4 versus 2), different resolutions (24-bit versus 31-bit), and different maximum data rates. A direct substitution is not possible without redesigning the interface, layout, and signal chain.
What are the maximum data rates of the ADS1219IPWR and ADS1282HIPW?
The ADS1219IPWR supports programmable data rates up to 1 kSPS. The ADS1282HIPW supports data rates up to 4 kSPS. These values should be confirmed against the respective manufacturer datasheets for the exact operating conditions.
What serial interfaces do the ADS1219IPWR and ADS1282HIPW use?
The ADS1219IPWR uses an I2C interface. The ADS1282HIPW uses an SPI-compatible interface. This difference affects host microcontroller selection, firmware, and board-level routing.
How do the resolutions and channel counts of the ADS1219IPWR and ADS1282HIPW compare?
The ADS1219IPWR is a 24-bit ADC with 4 input channels. The ADS1282HIPW is a 31-bit ADC with 2 input channels. The higher resolution and lower channel count of the ADS1282HIPW suit precision seismic and energy exploration signal chains, while the ADS1219IPWR suits multi-channel general-purpose precision sensing.
Do the ADS1219IPWR and ADS1282HIPW target the same applications?
No. The ADS1219IPWR is a general-purpose, multi-channel, 24-bit ADC suited to industrial sensing, process control, and portable instrumentation. The ADS1282HIPW is a high-resolution 31-bit ADC intended for seismic data acquisition and energy exploration. Application requirements should be matched to each device's verified datasheet specifications.