Part A
ADS5474IPFP
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 7275 個数
- Package
- HTQFP-80
- 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 ADS5444MPFPEP is a functionally compatible replacement candidate for the ADS5474IPFP, sharing the same 14-bit resolution, 400 MSPS maximum sample rate, and HTQFP-80 package footprint. Both are pipeline analog-to-digital converters with parallel LVDS-compatible output interfaces and similar supply and temperature specifications. Designers should validate the extended temperature range and screening level of the EP-grade device against their application requirements before committing to a drop-in substitution.
Resolution and Sample Rate
High match
Package and Pinout
High match
Output Interface
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADS5444MPFPEP
STマイクロエレクトロニクス
- Lifecycle
- Active
- Stock
- 6486 個数
- Package
- TQFP-80
- 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 | ADS5474IPFP | ADS5444MPFPEP | Why it matters |
|---|---|---|---|
| Resolution | 14 bit | 13 bit | Bit depth determines the quantization granularity and achievable SNR; a 14-bit ADC provides finer resolution than a 13-bit device, so the two are not directly interchangeable in precision-sensitive designs. |
| Sampling Rate | 400 MSPS | 250 MSPS | Maximum sample rate sets the usable input bandwidth and Nyquist limit; the higher-speed part can digitize wider-band signals, so substitution affects the supported signal bandwidth. |
| Input Type | Differential | Differential | Both use differential inputs, which improve noise immunity and even-order distortion; matching input topology simplifies analog front-end reuse. |
| Supply Voltage | 3.3 V analog / 3.3 V digital | 3.3 V analog / 3.3 V digital | Identical supply rails allow the same power architecture to be reused, reducing redesign effort when swapping parts. |
| Output Interface | Parallel LVDS | Parallel LVDS | A matching LVDS parallel output means the digital capture interface (FPGA/ASIC) can remain unchanged, which is critical for drop-in compatibility. |
| Operating Temperature Range | -40°C to +85°C | -55°C to +125°C | The extended-temperature (EP) variant supports harsher environments; using the industrial-grade part in place of the enhanced part may violate thermal requirements. |
| Package | HTQFP-80 | HTQFP-80 | An identical package footprint and pinout enables board-level interchangeability without layout changes. |
| Power Consumption | Approximately 2.2 W | Approximately 1.6 W | Power dissipation affects thermal design and supply sizing; the higher-speed part draws more power, which may require re-evaluation of the thermal solution. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5474IPFP | ADS5444MPFPEP |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 14 | 13 |
| Sampling Rate(Per Second) | 400M | 250M |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | Parallel | Parallel |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | Pipelined | Pipelined |
| Reference Type | Internal | Internal |
| Voltage - Supply, Analog | 3.1V ~ 3.6V, 5V | 5V |
| Voltage - Supply, Digital | 3V ~ 3.6V | 5V |
| Operating Temperature | -40°C ~ 85°C | -55°C ~ 125°C |
Frequently asked questions
What are the key differences between the ADS5474IPFP and the ADS5444MPFPEP?
The ADS5474IPFP is a 14-bit, 400-MSPS analog-to-digital converter in a 80-pin HTQFP (PFP) package rated for the industrial temperature range of -40°C to +85°C. The ADS5444MPFPEP is a 13-bit, 250-MSPS ADC in the same 80-pin HTQFP package, but it is an enhanced-product (EP) variant specified over the military temperature range of -55°C to +125°C. The primary differences are resolution (14-bit vs 13-bit), maximum sample rate (400 MSPS vs 250 MSPS), and temperature grade.
Are the ADS5474IPFP and ADS5444MPFPEP pin-compatible?
Both devices are offered in the same 80-pin HTQFP (PFP) package, and their pinouts are defined by the respective Texas Instruments datasheets. Designers must verify pin function assignments against both datasheets before considering a layout-compatible substitution, since the two converters are not identical devices and pin-level equivalence should not be assumed without documentation review.
What is the maximum sample rate of each converter?
The ADS5474IPFP supports a maximum sampling rate of 400 MSPS. The ADS5444MPFPEP supports a maximum sampling rate of 250 MSPS. The higher throughput of the ADS5474IPFP makes it suitable for wider-bandwidth signal chains, while the ADS5444MPFPEP targets applications where the 250-MSPS rate is sufficient.
What are the resolution and output format of these ADCs?
The ADS5474IPFP provides 14-bit resolution, and the ADS5444MPFPEP provides 13-bit resolution. Both devices are pipeline ADCs that deliver parallel LVDS-compatible output data, allowing direct interfacing to FPGAs and digital signal processors in high-speed acquisition systems.
How do the operating temperature ranges compare?
The ADS5474IPFP is specified for the industrial temperature range of -40°C to +85°C. The ADS5444MPFPEP is an enhanced-product device specified for the military temperature range of -55°C to +125°C, making it the appropriate choice for harsh-environment and defense-related applications requiring extended temperature operation.
What is the difference between the "I" and "M" suffixes and the "EP" designation?
The "I" in ADS5474IPFP denotes the industrial temperature grade, while the "M" in ADS5444MPFPEP denotes the military temperature grade. The "EP" suffix identifies the ADS5444MPFPEP as an enhanced product, a Texas Instruments classification for devices screened and specified for extended temperature and reliability requirements beyond standard commercial or industrial grades.
Can the ADS5444MPFPEP be used as a drop-in replacement for the ADS5474IPFP?
No. Although both are 80-pin HTQFP pipeline ADCs, they differ in resolution (13-bit vs 14-bit), maximum sample rate (250 MSPS vs 400 MSPS), and specified temperature range. A substitution requires revalidation of the digital interface, timing, SNR/SFDR performance, and thermal design against the target application requirements using the respective datasheets.
What input signal characteristics should be considered when selecting between these two ADCs?
Both converters use a differential analog input and are intended for high-speed signal acquisition. Selection should be based on the required bandwidth and dynamic range: the ADS5474IPFP offers 14-bit resolution at up to 400 MSPS for higher dynamic range and wider bandwidth, while the ADS5444MPFPEP offers 13-bit resolution at up to 250 MSPS with extended military temperature qualification. Input drive, clock jitter, and PCB layout must be evaluated per the respective datasheets.