1SA28

AlteraStratix 10 AX

The 1SA28 is a Stratix 10 AX SoC FPGA from Altera, built on a 14 nm process. It provides 933,120 adaptive logic modules (ALMs) (2,753,000 logic elements (LEs)), 3,732,480 flip-flops, 229 Mb of block RAM and 5,760 variable-precision DSP blocks. Its processing system includes four Arm Cortex-A53 cores running at up to 1.41 GHz. The programmable logic offers up to 440 user I/O pins and 36 XCVR transceivers at up to 28.9 Gb/s, with hard PCI Express Gen3 x16 blocks. It comes in a single package, the F2397 (50 × 50 mm). Designs are built with Altera Quartus Prime.

933,120ALMs

5,760variable-precision DSP blocks

229 MbBlock RAM

440Max. user I/O

36Transceivers (28.9 Gb/s)

4× A53Hard processor

Specifications

Vendor	Altera
Family	Stratix 10 AX
Series	Stratix
Process	14 nm
Configuration memory	SRAM
Adaptive logic modules (ALMs)	933,120
Logic block	adaptive logic module: fracturable 8-input LUT (one 6-input or two independent 4-input functions)
LUT note	Adaptive logic modules (ALMs): fracturable 8-input LUTs; each ALM can implement two 4-input functions
LUT4 equivalent (approx.)	≈1,866,240
Logic elements (LEs)	2,753,000
Flip-flops	3,732,480
Distributed RAM	15,360 Kb
Block RAM	229 Mb (11721 × 20 Kb)
DSP (variable-precision DSP block)	5,760

Max. user I/O	440
Differential pairs	216
XCVR transceivers	36 × 28.9 Gb/s
PCI Express (PL)	Gen3 x16
Analog / monitor	8× 10-bit RF-ADC (64 GSPS), 8× 10-bit RF-DAC (64 GSPS)
Hard processor	4× Arm Cortex-A53 @ 1.41 GHz
Design tool	Altera Quartus Prime

Packages

Package	Size (mm)	Pitch (mm)	User I/O	PS I/O	Transceivers
F2397	50 × 50	0.92	440	48	36

Package names are shown as in the selection guide; the full ordering code adds speed grade and temperature (see the data sheet).

Alternatives to the 1SA28

Closest matches in other families and vendors by logic, DSP, memory, I/O and transceivers. Check pin compatibility and tools before migrating.

Device	LUTs	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe	CoreScore
XC2VP3402AMD Versal Premium Gen 2	1,170,816 LUT6	2561K SLC	6,080	78 Mb	736	56 GTM2 112 Gb/s	Gen6	—
AGRW027Altera Agilex 9 Direct RF	912,800 ALMs	2693K LE	8,528	259 Mb	558	32 XCVR 58 Gb/s	Gen4	—
AGRM027Altera Agilex 9 Direct RF	912,800 ALMs	2693K LE	8,528	259 Mb	660	32 XCVR 58 Gb/s	Gen4	—
AGI 022Altera Agilex 7 I-Series	748,500 ALMs	2208K LE	6,250	212 Mb	720	64 XCVR 116 Gb/s	—	—
AGF 022Altera Agilex 7 F-Series	748,500 ALMs	2208K LE	6,250	212 Mb	744	64 XCVR 58 Gb/s	—	—
XCVP1202AMD Versal Premium	900,224 LUT6	1969K SLC	3,984	47 Mb	702	48 GTYP/GTM 58 Gb/s	Gen5	—

Compare side by side: 1SA28 vs XC2VP3402, 1SA28 vs AGRW027, 1SA28 vs AGRM027.

Compare the 1SA28 with up to three other FPGAs.

1SA28 quick facts

How many LUTs does the 1SA28 have?

The 1SA28 has 933,120 adaptive logic modules (ALMs) (2,753,000 logic elements (les) as published by Altera). Logic block: adaptive logic module: fracturable 8-input LUT (one 6-input or two independent 4-input functions).

How many DSP blocks does the 1SA28 have?

The 1SA28 has 5,760 variable-precision DSP blocks and 229 Mb of block RAM.

Does the 1SA28 have transceivers?

Yes, 36 XCVR transceivers at up to 28.9 Gb/s.

Does the 1SA28 have a processor?

Yes. It includes a hard 4× Arm Cortex-A53 processor.

What are the alternatives to the 1SA28?

Devices of similar size in other families include XC2VP3402 (AMD Versal Premium Gen 2), AGRW027 (Altera Agilex 9 Direct RF), AGRM027 (Altera Agilex 9 Direct RF).

Which software is used to design with the 1SA28?

Designs for the 1SA28 are built with Altera Quartus Prime.

Other Stratix 10 AX devices

Device	LUTs	Vendor logic	DSP	Block RAM	Max I/O	Transceivers	PCIe	CoreScore
1SA28	933,120 ALMs	2753K LE	5,760	229 Mb	440	36 XCVR 28.9 Gb/s	Gen3	—

Source: Altera Direct RF-Series FPGAs and SoCs Product Table, 2026.05.29. Data is extracted automatically from the vendor's selection guide; verify critical values in the device data sheet.