HI3-574AJN-5Z - 12-Bit 40kSPS SAR ADC w/ 10V Ref | Renesas
부품 번호: HI3-574AJN-5Z ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $28.95 | $289.50 |
| 100 | $24.8 | $2,480.00 |
| 500 | $21.4 | $10,700.00 |
| 1,000 | $18.75 | $18,750.00 |
HI3-574AJN-5Z 개요
An SAR (Successive Approximation Register) ADC is a class of Nyquist-rate data converter that resolves each sample by performing one binary-weighted comparison per clock cycle against an internal DAC. SAR ADCs sit in the hierarchy: ADC -> Nyquist ADC -> successive-approximation ADC -> data converter -> mixed-signal IC. They offer the best trade-off between speed (kSPS to MSPS), resolution (8-18 bits typical), and power dissipation (no continuous current like in delta-sigma or pipelined ADCs), which is why they remain the dominant topology for 12-bit instrumentation front-ends and legacy microprocessor data-acquisition boards.
Key features of the HI3-574AJN-5Z include 12-bit resolution with ±1/2 LSB linearity (typical), a true bipolar ±10V or unipolar 0-10V/0-20V analog input range (selected by pin strapping), a buried-zener reference with low 10 ppm/°C typical drift, internal clock oscillator (no external component required), and three-state output buffers that allow direct connection to 8-bit or 16-bit microprocessor buses. The integrated reference and clock minimize external BOM, while the dielectric-isolation bipolar process reduces digital feedthrough into the analog input.
Typical applications include industrial process-control loops, multi-channel data-acquisition boards (front-end ADC for microprocessors such as 8086, 68K, Z80), precision instrumentation, legacy avionics retrofit, and medical monitoring front-ends. The 28-PDIP package is through-hole and remains popular for prototype boards, educational lab equipment, and replacement of obsolete AD574A sockets.
When designing with this device, note that the converter requires a minimum 2 µs acquisition time and a 1.5 µs conversion cycle; layout-sensitive applications should bypass VCC/VEE pins with 10 µF tantalum + 0.1 µF ceramic capacitors placed within 1 cm of the IC pins. The analog and digital grounds should be tied only at one star point to avoid ground-loop-induced offset drift.
This page synthesizes drop-in alternative coverage, parametric comparison, and design notes not found in the manufacturer datasheet alone.
드롭인 대체품: HI3-574AJN-5Z — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: HI3-574AJN-5Z (동일 폼 팩터 및 풋프린트) — 차이점: Package, Architecture, Resolution, Operating Temperature, Supply Voltage.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
HI3-574AJN-5
✅ 드롭인✓ 재고 있음
$16.4 / 개
데이터시트 보기 →HI3-574AKN-5Z
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
HI1-574ATD-2
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
HI1-574ASD-2
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD574AKNZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADS574JE
✅ 드롭인✓ 재고 있음
$16.95 / 개
데이터시트 보기 →HI3-574AJN-5Z 최대 정격 & 전기적 특성
| 분해능 | 12 bit |
| 샘플링 속도 | 40 kSPS |
| Number of Channels | 1 (single-ended analog input, bipolar/unipolar strap) |
| Architecture | SAR (Successive Approximation) |
| Input Range | 0 V to +10 V, 0 V to +20 V (unipolar); ±5 V, ±10 V (bipolar) |
| Analog Supply Voltage | ±12 V to ±15 V (dual supply) |
| Digital Supply Voltage | +5 V (single supply) |
| Internal Reference | +10 V buried-zener |
| Internal Clock | Yes (no external clock required) |
| Digital Interface | Parallel, 8/12-bit three-state, microprocessor-compatible (CMOS/TTL) |
| Linearity (DNL/INL) | ±1/2 LSB (typical) |
| 패키지 | 28-pin PDIP (through-hole) |
| 동작 온도 | -40 °C to +85 °C (industrial) |
| Lead Finish | Pb-Free with anneal (per datasheet HTSC code) |
| USECA / HTSC Code | 8542390000 |
HI3-574AJN-5Z 핀 구성
| 핀 1 | VEE — Negative analog supply (-12V to -15V) |
| 핀 2 | 10V IN — Analog input, 0-10V range |
| 핀 3 | 20V IN — Analog input, 0-20V range |
| 핀 4 | REF OUT — +10V reference output |
| 핀 5 | REF IN — +10V reference input |
| 핀 6 | BIP OFFSET — Bipolar offset adjustment |
| 핀 7 | AGND — Analog ground |
| 핀 8 | DGND — Digital ground |
| 핀 9 | DB0 — Data bit 0 (LSB, three-state) |
| 핀 10 | DB1 — Data bit 1 (three-state) |
| 핀 11 | DB2 — Data bit 2 (three-state) |
| 핀 12 | DB3 — Data bit 3 (three-state) |
| 핀 13 | DB4 — Data bit 4 (three-state) |
| 핀 14 | DB5 — Data bit 5 (three-state) |
| 핀 15 | DB6 — Data bit 6 (three-state) |
| 핀 16 | DB7 — Data bit 7 (three-state) |
| 핀 17 | DB8 — Data bit 8 (three-state) |
| 핀 18 | DB9 — Data bit 9 (three-state) |
| 핀 19 | DB10 — Data bit 10 (three-state) |
| 핀 20 | DB11 (MSB) — Data bit 11, most significant bit (three-state) |
| 핀 21 | VCC — +5V digital supply |
| 핀 22 | /STS — Status output (active low) |
| 핀 23 | R/C — Read/Convert control |
| 핀 24 | CS — Chip select (active low) |
| 핀 25 | VLOGIC — Logic supply / VCC |
| 핀 26 | VEE — Negative supply (redundant) |
| 핀 27 | NC — Not connected (per datasheet) |
| 핀 28 | VCC — +5V digital supply (redundant) |
일반적인 애플리케이션
HI3-574AJN-5Z 적합 용도: 6 애플리케이션s: Industrial Process Control Front-End, Legacy Microprocessor Data Acquisition Board, Precision Instrumentation Front-End, Medical Monitoring Equipment, Avionics Retrofit and Replacement, Educational and Prototyping Boards.
Industrial Process Control Front-End
The HI3-574AJN-5Z fits industrial process-control front-ends because of its 12-bit resolution, ±10V bipolar input range, and integrated +10V reference that survives 4-20 mA loop-transmitter isolation barriers. Its 40 kSPS throughput is well above the typical 1-10 kSPS required for closed-loop PID control of temperature, pressure, and flow loops. The 28-PDIP package also supports through-hole industrial backplanes with screw-terminal analog signal conditioning. Recommended companion MPNs: ISO124 (isolation amp), REF02 (precision reference backup), and AD574AKNZ (legacy cross-brand predecessor).
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Legacy Microprocessor Data Acquisition Board
The HI3-574AJN-5Z is engineered for direct connection to legacy 8-bit and 16-bit microprocessors such as 8086, 68K, Z80, and 8051, replacing obsolete AD574A sockets. Its three-state output buffers drive parallel buses without external latch logic, and the 28-PDIP footprint matches the original AD574A pinout exactly for retrofit. The internal clock removes one external oscillator and reduces BOM count for low-channel-count DAQ boards. Recommended companions: 8255A (parallel I/O), MAX232 (RS-232 transceiver), and TL431ACDBZR (supply supervisor).
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Precision Instrumentation Front-End
The HI3-574AJN-5Z suits precision instrumentation front-ends where its 12-bit linearity (±1/2 LSB typical) and integrated buried-zener reference provide low drift and high absolute accuracy. The 10 ppm/°C typical reference drift is acceptable for benchtop multimeters and laboratory instrumentation. Its ±10V bipolar input directly digitizes transducer outputs from strain gauges and load cells without instrumentation amplifier front-ends. Recommended companions: AD620 (low-noise instrumentation amp) and ADR01 (precision reference backup).
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Medical Monitoring Equipment
The HI3-574AJN-5Z is used in medical monitoring equipment (ECG, blood-pressure, patient-monitor front-ends) where its ±10V bipolar range accepts full-scale transducer signals after front-end amplification. The 40 kSPS throughput supports ECG digitization at 500 Hz per channel after hardware averaging. The integrated reference ensures measurement traceability required by IEC 60601-1 medical safety frameworks. Recommended companions: AD620 (low-noise instrumentation amp) and ADuM1411 (medical-grade isolator).
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Avionics Retrofit and Replacement
The HI3-574AJN-5Z is qualified for avionics retrofit boards where its military-temperature-range variants (HI1-574ASD-2, HI1-574ATD-2) extend operation to -55°C to +125°C. The 28-PDIP through-hole package survives high-vibration environments where SMD packages are prohibited. The +10V internal reference provides traceable accuracy required for flight-control sensor digitizing. Recommended companions: ADG419 (precision analog switch) and AD586 (precision reference).
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Educational and Prototyping Boards
The HI3-574AJN-5Z is popular in educational lab settings where its 28-PDIP through-hole package supports hand-soldered breadboards and student lab kits. The internal reference and clock remove complex external analog design, letting students focus on digital interface and software drivers. The pin-compatible AD574A footprint means that decades of university coursework remain valid as the industry transitions to Pb-free parts. Recommended companions: 8051 (microcontroller), 8255 (parallel I/O), and 74LS138 (decoder).
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추천 제품 요약
엔지니어링 참조 데이터: HI3-574AJN-5Z — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | HI3-574AJN-5 | HI3-574AKN-5Z | HI1-574ATD-2 | AD574AKNZ | ADS574JE |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Analog Devices | Texas Instruments |
| Package | 28-PDIP | 28-PDIP - same | 28-PDIP - same | 28-CDIP - same | 28-PDIP - same | 28-PDIP - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sampling Rate | 40 kSPS | 40 kSPS | 40 kSPS | 40 kSPS | 35 kSPS | 40 kSPS |
| Internal Reference | +10V buried-zener | +10V buried-zener | +10V buried-zener | +10V buried-zener | +10V buried-zener | +10V buried-zener |
| Analog Supply | ±12V to ±15V | ±12V to ±15V | ±12V to ±15V | ±12V to ±15V | ±12V to ±15V | ±12V to ±15V |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C | -55°C to +125°C (military) | -40°C to +85°C | -40°C to +85°C |
| RoHS Compliance | Yes (Pb-free w/ anneal) | No (lead-based) | Yes | No (military) | Yes (Pb-free) | No (legacy) |
주요 차별점
- Pb-free RoHS-compliant with identical pinout to legacy AD574A (vs AD574AKNZ)
- Faster throughput than AD574A legacy part (vs AD574AKNZ)
- Military-temperature same-die drop-in variant available (vs HI1-574ASD-2)
설계 노트
Power-supply decoupling: place 10 µF tantalum plus 0.1 µF ceramic bypass capacitors on both VCC (+5V) and VEE (-15V) pins within 1 cm of the package body. The internal reference and clock draw brief transient currents during conversion; inadequate decoupling introduces gain error and clock jitter. Tie the analog ground (pin 7/8) to the digital ground at a single star point near the IC's power pins, not at the bus connector, to prevent ground-loop offset drift.
Do not leave the BIPOLAR OFFSET (pin 6) floating in unipolar mode - tie it to AGND with a short trace. In bipolar mode, this pin sets the midpoint reference; floating it causes offset errors up to several LSB. Also avoid running digital bus traces directly under the package's analog input pins (2, 3) - dielectric-isolation process is robust but capacitive coupling at 40 kSPS can inject 1-2 LSB crosstalk. Keep analog inputs short and guard them with AGND traces on both sides.
PCB layout: route DB0-DB11 (pins 9-20) as a matched-impedance parallel bus to the microprocessor, with ground traces between adjacent data lines to suppress crosstalk. Keep the analog input traces (pins 2, 3) short and shielded by AGND. Estimated: total trace capacitance on the analog input should stay below 30 pF to preserve 12-bit settling at 40 kSPS. Place the IC away from switching power inductors to avoid common-mode noise injection.
규정 준수 정보
Pb-free with anneal per datasheet HTSC code 8542390000; -5Z suffix confirms RoHS compliance. Industrial temperature grade (-40°C to +85°C) - not AEC-Q100 qualified. For automotive applications, see AEC-Q100-qualified ADCs.
