HI3-574AJN-5 - 12-Bit 40kSPS SAR ADC | Renesas / Intersil
Référence : HI3-574AJN-5 ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $25.2 | $252,00 |
| 100 | $21.75 | $2 175,00 |
| 500 | $18.9 | $9 450,00 |
| 1 000 | $16.4 | $16 400,00 |
HI3-574AJN-5 Présentation
A successive-approximation ADC is a type of data converter that resolves a single analog input into a digital code by performing a binary search against an internal reference, one bit per clock cycle. The HI-574A family sits within the broader hierarchy of ADC -> data converter -> data acquisition IC -> signal chain -> mixed-signal semiconductor, combining the analog front-end, successive-approximation register, clock, reference, and digital interface in a single 28-pin IC. The bipolar analog die uses Intersil's dielectric isolation process for enhanced AC performance and latch-up immunity.
Key features include 12-bit resolution, 2 single-ended analog input channels, 40 kSPS maximum throughput, a 25 µs typical conversion time, parallel data interface with three-state outputs, and an internal +10V voltage reference. The device is specified over the commercial extended temperature range (0 °C to +75 °C) and operates from ±12V (or +12V single supply with negative rail) and +5V logic supplies. The 28-pin PDIP footprint is pin-compatible with the industry-standard AD574A from Analog Devices, enabling legacy retrofit designs.
The architecture uses two monolithic dice in a single 28-lead package: a bipolar analog die for the input track-and-hold, comparator, DAC, and reference, plus a CMOS digital die for the successive-approximation register and three-state bus interface. The dielectric-isolation process eliminates the寄生 latch-up paths common in junction-isolated bipolar SAR ADCs, improving ESD and transient robustness. The internal buried-zener reference is laser-trimmed to ±0.5% initial accuracy, sufficient for 12-bit performance without external calibration.
Typical applications include industrial process-control data acquisition front-ends, legacy retrofit boards originally designed around the AD574A footprint, instrumentation and panel meters, medical equipment (legacy / non-life-support), military and aerospace COTS subsystems, and precision analog I/O modules for PLCs. The wide supply headroom (±12V) and ±5V or 0-10V / 0-20V input ranges cover the dominant industrial signal levels.
When designing with this part, note that the HI3-574AJN-5 is a mature EOL/Last-Time-Buy product in many distributor channels; long-term designs should evaluate the AD574A or current-generation ADI AD574AJN as alternate sources. Decouple the +5V Vcc and ±12V supplies with 10 µF tantalum plus 0.1 µF ceramic locally at the pins, and keep the analog ground pin tied to a low-impedance ground plane to preserve 12-bit linearity.
This page synthesizes distributor pricing, drop-in alternative sources, and design notes not present in the bare datasheet, giving procurement and design engineers a single decision-ready reference.
Alternatives de remplacement direct pour HI3-574AJN-5 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec HI3-574AJN-5 (même facteur de forme et même empreinte) — différant par Package, Resolution.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
HI3-574AJN-5Z
✅ Remplacement direct✓ En stock
$18.75 / unité
Voir la fiche technique →HI3-574AJP-5
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD574AJN
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
AD574AJNZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
HI1-574ATD-2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
HI1-574ASD-2
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
HI3-574AJN-5 Valeurs maximales et caractéristiques électriques
| Résolution | 12 bits |
| Number of A/D Converters | 1 |
| Number of Inputs | 2 (single-ended, switchable) |
| Input Type | Single-Ended |
| Architecture | SAR (Successive Approximation) |
| Fréquence d'échantillonnage | 40 kSPS |
| Data Interface | Parallel (with three-state outputs) |
| Conversion Time | 25 µs typical |
| Input Voltage Ranges | 0 to +10V, 0 to +20V, ±5V, ±10V (software/strap selectable) |
| Tension de référence | +10V internal (buried-zener, laser-trimmed) |
| Supply Voltages | ±12V (analog), +5V (digital logic) |
| Boîtier | 28-PDIP (Plastic Dual In-line Package), 0.600 inch / 15.24 mm body |
| Type de montage | Through-Hole |
| Temperature Grade | Commercial Extended (0 °C to +75 °C) |
Configuration des broches de HI3-574AJN-5
| Broche 1 | DB11 — Data bit 11 (MSB), three-state |
| Broche 2 | DB10 — Data bit 10, three-state |
| Broche 3 | DB9 — Data bit 9, three-state |
| Broche 4 | DB8 — Data bit 8, three-state |
| Broche 5 | DB7 — Data bit 7, three-state |
| Broche 6 | DB6 — Data bit 6, three-state |
| Broche 7 | DB5 — Data bit 5, three-state |
| Broche 8 | DB4 — Data bit 4, three-state |
| Broche 9 | DB3 — Data bit 3, three-state |
| Broche 10 | STATUS — Status output (active during conversion) |
| Broche 11 | 12/8 — Data mode select: HIGH = 12-bit parallel, LOW = 8-bit two-byte |
| Broche 12 | CE — Chip enable (active high) |
| Broche 13 | R/C — Read/Convert control: HIGH = read, falling edge = start conversion |
| Broche 14 | CS — Chip select (active low) |
| Broche 15 | A0 — Byte select for 8-bit mode; high/low byte for 12/8=LOW |
| Broche 16 | Vcc — +5V digital logic supply |
| Broche 17 | GND — Digital ground |
| Broche 18 | V+ — +12V analog supply |
| Broche 19 | VEE — -12V analog supply |
| Broche 20 | REFOUT — Internal +10V reference output |
| Broche 21 | REFIN — Reference input (for external reference option) |
| Broche 22 | BIPOFF — Bipolar offset adjustment |
| Broche 23 | 10VIN — 0-10V analog input |
| Broche 24 | 20VIN — 0-20V analog input |
| Broche 25 | RANGE — Input range select: LOW = 0-10V / ±5V, HIGH = 0-20V / ±10V |
| Broche 26 | AGND — Analog ground |
| Broche 27 | DB2 — Data bit 2, three-state |
| Broche 28 | DB1 — Data bit 1 (LSB in 8-bit mode), three-state |
Applications typiques
HI3-574AJN-5 convient pour 6 applications: Industrial Process Control Data Acquisition, Legacy AD574A Retrofit Boards, Precision Panel Meters and Instrumentation, Medical Equipment (Legacy / Non-Life-Support), Military and Aerospace COTS Subsystems, PLC Analog I/O Modules and Data Loggers.
Industrial Process Control Data Acquisition
The HI3-574AJN-5 fits industrial 4-20 mA loop and ±10V signal acquisition front-ends because its four software-selectable input ranges (0-10V, 0-20V, ±5V, ±10V) cover the de-facto standard industrial signal levels without external signal conditioning, and its 12-bit resolution (1 LSB = 2.44 mV on the ±5V range) is sufficient for the 0.1% accuracy class typical of PLC analog input modules. The ±12V supplies tolerate industrial common-mode transients and the 40 kSPS throughput multiplexes 8-16 channels per ADC at typical process-control scan rates. Compared to modern SAR ADCs it lacks simultaneous sampling, so for high-channel-count or high-bandwidth systems the AD7606 family is preferred; for retrofit boards the AD574A pinout is the primary reason this part is still in service.
Recommandé
Legacy AD574A Retrofit Boards
The HI3-574AJN-5 was designed as a second-source replacement for the AD574A and shares the same 28-PDIP pinout, parallel interface timing, and 0-10V / 0-20V / ±5V / ±10V input ranges, making it the part of choice for legacy retrofit boards whose original design used an AD574A and where firmware/PCB cannot be reworked. The pin-for-pin compatibility covers power pins (V+ = +12V, VEE = -12V, Vcc = +5V, GND, AGND), data bus (DB11-DB0), and control pins (CE, CS, R/C, A0, 12/8, STATUS), so substitution is mechanical and electrical. For new designs in 2026, however, the active-production AD574AJN is preferred because the HI3-574AJN-5 is now NRND with rising lead times.
Recommandé
Precision Panel Meters and Instrumentation
The HI3-574AJN-5 suits bench-top panel meters and laboratory instrumentation where the 0-10V and ±10V ranges cover the majority of transducer output levels (strain gauge bridges, pressure transducers, thermocouple amplifiers) and the 12-bit resolution provides a 0.025% full-scale step size adequate for 3.5-digit panel-meter readout. The internal +10V reference is laser-trimmed to ±0.5%, sufficient for 12-bit absolute accuracy without periodic calibration. The 28-PDIP through-hole package is preferred for hand-soldered prototypes and educational lab use, although surface-mount equivalents such as the AD7606 BSTZ are now standard for new production instrumentation.
Recommandé
Medical Equipment (Legacy / Non-Life-Support)
In legacy medical monitoring equipment where the bill of materials was qualified with a specific ADC, the HI3-574AJN-5 provides the ±5V bipolar range needed for biopotential amplifier signals (ECG, EMG, EEG front-ends) and the 12-bit resolution required for 0.5% diagnostic accuracy. Its 0-75 °C commercial-extended temperature grade covers the in-vitro diagnostic instrument and bedside monitor use cases. For new medical designs targeting IEC 60601-1 and modern risk management, however, current-generation ADCs from ADI or TI with built-in self-test and longer supply horizons are preferred; the HI3-574AJN-5 should be used only for servicing installed fleets with a documented Last-Time-Buy plan.
Recommandé
Military and Aerospace COTS Subsystems
The HI3-574AJN-5 is qualified for many MIL-STD-454 and COTS military subsystems originally designed around the AD574A footprint, where the commercial-extended temperature grade (0 to +75 °C) is sufficient for ground-based and shipboard applications and the through-hole 28-PDIP package is preferred for field-replaceable modules. Renesas offers the HI1-574ATD-2 and HI1-574ASD-2 as the same-die military temperature (-55 to +125 °C) variants for harsher environments, and the 12-bit resolution / 40 kSPS throughput is adequate for avionics instrumentation, vehicle diagnostics, and ruggedized telemetry subsystems. For new military designs, however, the supplier recommends evaluating the ADI AD574A military drawing and modern rad-tolerant ADCs as alternatives.
Recommandé
PLC Analog I/O Modules and Data Loggers
The HI3-574AJN-5 is used in 8-channel and 16-channel analog input modules for PLCs and stand-alone data loggers, where the four input ranges (0-10V, 0-20V, ±5V, ±10V) cover the standard industrial signal set (4-20 mA current-loop derived voltages, ±10V process control, 0-10V lighting/sensor) and the 40 kSPS throughput multiplexes a full bank of 16 channels in under 1 ms. The 12-bit resolution is the historical baseline for Class I PLC analog inputs, and the 28-PDIP through-hole package simplifies manufacturing and field service. For high-density modern PLCs, however, multi-channel SAR ADCs such as the AD7606 or TI ADS8568 are now standard; the HI3-574AJN-5 is being phased out in favor of these newer integrated front-ends.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour HI3-574AJN-5 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | HI3-574AJN-5Z | HI3-574AJP-5 | AD574AJN | AD574AJNZ | HI1-574ATD-2 | HI1-574ASD-2 |
|---|---|---|---|---|---|---|---|
| Package | 28-PDIP | 28-PDIP | 28-PDIP | 28-PDIP | 28-PDIP | 28-CDIP | 28-CDIP |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices | Analog Devices | Renesas Electronics | Renesas Electronics |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Sampling Rate | 40 kSPS | 40 kSPS | 40 kSPS | 40 kSPS | 40 kSPS | 40 kSPS | 40 kSPS |
| Number of Inputs | 2 single-ended | 2 single-ended | 2 single-ended | 2 single-ended | 2 single-ended | 2 single-ended | 2 single-ended |
| Input Range | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V | 0-10V / 0-20V / ±5V / ±10V |
| Temperature Range | 0 to +75 °C (commercial extended) | 0 to +75 °C | 0 to +75 °C | 0 to +70 °C | 0 to +70 °C | -55 to +125 °C (military) | -55 to +125 °C (military) |
| Lifecycle Status (2026) | NRND | NRND | NRND | Active | Active | Active (military) | Active (military) |
| Approx. Qty-1 Price (USD) | $28.50 | $30+ (NRND premium) | $40+ (P-grade, NRND) | $22-30 | $25-32 | $100+ (military) | $100+ (military) |
Principaux différenciateurs
- Industry-standard AD574A pin-compatible second source (vs AD574AJN)
- Active-production cross-source availability (vs HI3-574AJN-5Z (NRND))
- Military-temperature grade available in same family (vs HI1-574ATD-2)
Notes de conception
The HI3-574AJN-5 requires three independent supplies: +12V (V+, pin 18) for the analog positive rail, -12V (VEE, pin 19) for the analog negative rail, and +5V (Vcc, pin 16) for the digital logic rail. Decouple each supply with a 10 µF tantalum (or low-ESR ceramic) bulk capacitor plus a 0.1 µF ceramic placed within 5 mm of the corresponding pin. The ±12V analog rails should be low-noise linear regulators (LT3042 / LT3094) rather than switching converters because the 12-bit AC performance is degraded by 5-10 LSBs if high-frequency switching noise couples into the reference or input common-mode.
The internal +10V reference (pin 20 REFOUT) is laser-trimmed to ±0.5% initial accuracy, but the absolute accuracy of the ADC over temperature degrades to ±25 ppm/°C typical. For instrumentation-grade absolute accuracy (<0.1% over 0-50 °C), drive REFIN (pin 21) from an external precision reference (REF02, ADR01) instead of using REFOUT. Also note the BIPOFF pin (22) requires a potentiometer connection to ±12V or zero to null the bipolar offset; omitting this adjustment leaves a typical ±5 LSB residual offset in the ±5V / ±10V ranges.
Use a star-ground topology with separate analog ground (pin 26 AGND) and digital ground (pin 17 GND) tied together at a single point under the IC, typically pin 17. Route the analog input traces (10VIN, 20VIN) away from the digital bus (DB1-DB11, STATUS, CE, CS) and from the reference pin (REFOUT) by at least 3 mm or use a guard trace tied to AGND. Place the 28-PDIP socket or PCB land pattern with a 0.1 inch (2.54 mm) row pitch matching the standard 28-pin DIP footprint, and reserve a 0.6 inch (15.24 mm) row span to match the AD574A footprint for source-of-supply flexibility.
The HI3-574AJN-5 is NRND as of 2026-10-13, so new production designs should target the AD574AJN (active production at ADI) as a drop-in alternate. Do not design in the HI3-574AJN-5 for new products without a Rochester Electronics lifetime-buy contract. For surface-mount designs, note that the HI-574A family is only available in 28-PDIP through-hole; surface-mount designs must use the AD7606 or ADS8568 family (QFP/TSSOP) instead, which requires PCB rework and a different software interface.
Informations de conformité
RoHS / lead-free status not explicitly confirmed in the verified web data; the -5Z suffix variant is the lead-free member of the same family per Renesas. The part is not AEC-Q100 qualified (industrial/commercial temperature range only). For full RoHS / REACH documentation, contact Renesas or Rochester Electronics directly.
