Part A
ADS5474IPFP
Texas Instruments
- Lifecycle
- Active
- Stock
- 7275 PCS
- Package
- HTQFP-80
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS5440MPFPEP is a functionally comparable candidate to the ADS5474IPFP, sharing the same 14-bit resolution, 80-pin HTQFP package, and parallel LVDS output interface, but it operates at a lower 40 MSPS sample rate versus 400 MSPS and carries enhanced product (EP) qualification. Designers must validate timing margin and signal integrity for high-speed applications before substituting, as the substantial sampling-rate reduction limits use to lower-bandwidth signal chains.
Resolution
High match
Sample Rate
Not compatible
Package Type
High match
Output Interface
Validation required
Parts at a glance
Part B
ADS5440MPFPEP
Texas Instruments
- Lifecycle
- Active
- Stock
- 96 PCS
- Package
- TQFP-80
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | ADS5440MPFPEP | 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 | 210 MSPS | Maximum sample rate defines the input bandwidth and Nyquist limit; the ADS5474 supports roughly double the throughput, which affects whether it can replace the slower part in wideband signal chains. |
| Input Type | Differential | Differential | Both use differential inputs, so the analog front-end topology is compatible, but the differing full-scale range and drive requirements still need verification. |
| Supply Voltage | 3.3 V analog / 3.3 V digital | 3.3 V analog / 3.3 V digital | Matching supply rails simplify board-level substitution, though current draw and decoupling requirements differ between the two devices. |
| Output Interface | Parallel LVDS | Parallel LVDS | Identical LVDS output style allows reuse of the digital capture interface, but the differing bit width and clock rate change the FPGA/ASIC pin count and timing budget. |
| Power Consumption | Approximately 2.2 W typical | Approximately 1.4 W typical | Higher power dissipation affects thermal design and supply sizing; the ADS5474 runs hotter and may require more aggressive cooling than the ADS5440. |
| Operating Temperature Range | -40°C to +85°C | -55°C to +125°C | The enhanced-product variant supports a wider military-grade temperature range, making it suitable for harsher environments where the industrial-grade part may not be qualified. |
| Package | HTQFP-80 | HTQFP-80 | Same package footprint allows a drop-in PCB layout, but the differing thermal and electrical characteristics still require revalidation. |
| SNR | Approximately 69 dBFS | Approximately 66 dBFS | Signal-to-noise ratio directly impacts dynamic range; the higher-resolution ADS5474 offers better SNR, which matters for weak-signal detection applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS5474IPFP | ADS5440MPFPEP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 14 | 13 |
| Sampling Rate(Per Second) | 400M | 210M |
| 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 ADS5440MPFPEP?
The ADS5474IPFP is a 14-bit, 400-MSPS analog-to-digital converter in a 100-pin HTQFP (PFP) package rated for the industrial temperature range of -40°C to +85°C. The ADS5440MPFPEP is a 13-bit, 210-MSPS ADC in the same 100-pin HTQFP (PFP) 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 210 MSPS), and temperature grade.
Are the ADS5474IPFP and ADS5440MPFPEP pin-compatible?
Both devices are offered in the same 100-pin HTQFP (PFP) package, and the ADS5440 and ADS5474 families share a common pinout architecture per Texas Instruments documentation. However, because the two parts differ in resolution and sample rate, designers must verify all pin functions, supply requirements, and output interface timing against the respective datasheets before considering a board-level swap.
What is the maximum sample rate of each device?
The ADS5474IPFP supports a maximum sampling rate of 400 MSPS. The ADS5440MPFPEP supports a maximum sampling rate of 210 MSPS. Designs requiring the higher throughput must use the ADS5474, while the ADS5440MPFPEP is limited to 210 MSPS.
What are the resolution and output format of these ADCs?
The ADS5474IPFP provides 14-bit resolution, and the ADS5440MPFPEP provides 13-bit resolution. Both devices deliver parallel CMOS-compatible output data per their respective Texas Instruments datasheets, so the host interface width and data alignment must be adjusted when comparing the two.
What are the operating temperature ranges for these two parts?
The ADS5474IPFP is specified for the industrial temperature range of -40°C to +85°C. The ADS5440MPFPEP is an enhanced-product device specified for the military temperature range of -55°C to +125°C. The EP suffix on the ADS5440MPFPEP indicates the extended-temperature enhanced-product grade.
Do both devices use the same analog supply voltage?
Both the ADS5474 and ADS5440 families operate from a 5 V analog supply with a 3.3 V digital supply, per Texas Instruments datasheet specifications. Designers should confirm exact supply tolerances and decoupling requirements in each device's datasheet, since the two parts have different power consumption profiles.
Can the ADS5440MPFPEP be used as a drop-in replacement for the ADS5474IPFP?
No. Although both are 100-pin HTQFP devices, the ADS5440MPFPEP has lower resolution (13-bit vs 14-bit) and a lower maximum sample rate (210 MSPS vs 400 MSPS). A drop-in replacement would require revalidation of the digital interface, timing, and system performance against the target design requirements.
Which device is better suited for extended-temperature or military applications?
The ADS5440MPFPEP is the appropriate choice for extended-temperature environments because it is an enhanced-product device rated for -55°C to +125°C. The ADS5474IPFP is rated only for the industrial range of -40°C to +85°C and should not be used outside that range without additional qualification.