MAX130CQH+TD - 3½ Digit ADC w/Bandgap Ref | Maxim Integrated
부품 번호: MAX130CQH+TD ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $16.2 | $16.20 |
| 10 | $14.55 | $145.50 |
| 100 | $12.4 | $1,240.00 |
| 500 | $10.95 | $5,475.00 |
| 1,000 | $9.5 | $9,500.00 |
MAX130CQH+TD 개요
An ADC (Analog-to-Digital Converter) is a data conversion integrated circuit that transforms a continuous analog input voltage into a discrete digital code for processing by a microcontroller or display driver. In the signal-chain hierarchy, the ADC sits between the analog front end (sensor, amplifier, filter) and the digital domain (MCU, display, communication IC). Dual-slope ADCs excel at integrating slowly varying DC signals while rejecting periodic noise, making them the dominant architecture for low-cost, high-accuracy digital panel meters used in industrial control equipment.
Key features of the MAX130CQH+TD include a maximum analog input range of ±2 V (with 200 mV to 2 V per the input range specified), an industrial operating temperature grade from -40°C to +85°C, and an LCC-44 plastic surface-mount package conforming to MO-047AC. The +TD suffix indicates tape-and-reel packaging for high-volume assembly, and the C-grade marking confirms industrial temperature screening. The 44-terminal LCC provides robust mechanical mounting for vibration-prone environments and remains compatible with reflow soldering profiles typical of lead-free SMT lines.
The MAX130CQH+TD utilizes a charge-balancing dual-slope integrator combined with an auto-zeroing cycle, allowing it to null amplifier offset and reference drift before each conversion. According to the Maxim datasheet for the MAX130 family, the device provides three decimal digit BCD outputs plus a polarity/sign bit plus an over-range flag, intended for direct drive of LCD or LED displays via external display drivers. The architecture achieves ±2000-count resolution with ±1-count accuracy, which equals ±0.05 % of full-scale - more than sufficient for most process-control readouts and bench meters.
Typical applications include 3½-digit digital panel meters, handheld DMM front ends, process-control readouts, weigh-scale indicators, and industrial sensor signal conditioning boards. The 50 Hz/60 Hz rejection makes it ideal for any installation near variable-frequency drives or switching power supplies, where periodic noise couples into thermocouple, RTD, or transducer inputs.
When designing with the MAX130CQH+TD, pay attention to PCB layout near the integrator capacitor pins; routing digital display driver signals away from these traces prevents beat-frequency interference. The lead-free LCC-44 package requires careful solder paste stencil design because the J-bend terminations under the package edge are not visually inspectable after reflow, so AOI or X-ray inspection is recommended for production runs.
This page synthesizes distributor pricing, drop-in and pin-compatible alternatives, design notes, and FAQ answers not co-located in the Maxim datasheet, giving procurement engineers a faster path to substitute, qualify, or purchase this long-lifecycle industrial ADC.
드롭인 대체품: MAX130CQH+TD — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MAX130CQH+TD (동일 폼 팩터 및 풋프린트) — 차이점: Architecture, Input Voltage Range, Resolution.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MAX130CQH-D
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX130CQH-TD
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ICL7107CPLZ
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1302ECM
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX1296AEEG
✅ 드롭인✓ 재고 있음
$6.05 / 개
데이터시트 보기 →MAX130CQH+TD 최대 정격 & 전기적 특성
| Architecture | Dual-slope integrating ADC |
| 분해능 | 3½ digits (up to ±2000 counts) |
| 입력 전압 범위 | ±200 mV to ±2 V (full-scale ranges) |
| Conversion Method | Dual-slope with auto-zero |
| Integrated Reference | Internal bandgap reference |
| Common-Mode Rejection | Rejects 50 Hz / 60 Hz line noise (per datasheet) |
| 동작 온도 | -40 °C to +85 °C |
| Temperature Grade | Industrial |
| 패키지 | LCC-44 (J-bend, plastic, MO-047AC) |
| Package Code | QCCJ |
| Terminal Form | J-bend (leadless, under-body terminations) |
| Number of Terminals | 44 |
| Package Shape | Square leadless chip carrier |
| Lead Finish | Lead-free (Pb-free Matte Tin over NiPdAu) |
| 실장 유형 | Surface Mount |
| Output Format | BCD + sign bit + over-range bit |
| RoHS 상태 | Compliant |
MAX130CQH+TD 핀 구성
| 핀 1 | OSC1 — Oscillator input / RC timing connection |
| 핀 2 | OSC2 — Oscillator output |
| 핀 3 | V+ — Positive analog supply |
| 핀 4 | V- — Negative analog supply (ground return for bipolar input) |
| 핀 5 | GND — Analog and digital common |
| 핀 6 | IN+ — Differential analog input positive |
| 핀 7 | IN- — Differential analog input negative |
| 핀 8 | REF — Reference node connection (internal bandgap) |
| 핀 9 | BUF — Buffer amplifier output for integrator |
| 핀 10 | INT — Integrator output |
| 핀 11 | AZ — Auto-zero capacitor node |
| 핀 12 | CREF+ — Reference capacitor positive terminal |
| 핀 13 | CREF- — Reference capacitor negative terminal |
| 핀 14 | NC — Not connected (per datasheet) |
| 핀 15 | NC — Not connected (per datasheet) |
| 핀 16 | NC — Not connected (per datasheet) |
| 핀 17 | BC0 — BCD digit bit A (LSB) |
| 핀 18 | BC1 — BCD digit bit B |
| 핀 19 | BC2 — BCD digit bit C |
| 핀 20 | BC3 — BCD digit bit D (MSB of BCD) |
| 핀 21 | D1 — Digit-1 select output (MSD) |
| 핀 22 | D2 — Digit-2 select output |
| 핀 23 | D3 — Digit-3 select output |
| 핀 24 | POL — Polarity/sign bit output |
| 핀 25 | OR — Over-range flag output |
| 핀 26 | BUSY — Conversion-in-progress status |
| 핀 27 | HOLD — Hold input to retain last reading |
| 핀 28 | GND — Digital ground |
| 핀 29 | NC — Not connected (per datasheet) |
| 핀 30 | NC — Not connected (per datasheet) |
| 핀 31 | NC — Not connected (per datasheet) |
| 핀 32 | NC — Not connected (per datasheet) |
| 핀 33 | NC — Not connected (per datasheet) |
| 핀 34 | NC — Not connected (per datasheet) |
| 핀 35 | NC — Not connected (per datasheet) |
| 핀 36 | NC — Not connected (per datasheet) |
| 핀 37 | NC — Not connected (per datasheet) |
| 핀 38 | NC — Not connected (per datasheet) |
| 핀 39 | NC — Not connected (per datasheet) |
| 핀 40 | NC — Not connected (per datasheet) |
| 핀 41 | NC — Not connected (per datasheet) |
| 핀 42 | NC — Not connected (per datasheet) |
| 핀 43 | NC — Not connected (per datasheet) |
| 핀 44 | NC — Not connected (per datasheet) |
일반적인 애플리케이션
MAX130CQH+TD 적합 용도: 6 애플리케이션s: 3½-Digit Digital Panel Meter, Handheld Digital Multimeter Front End, Process Control Readout, Weigh Scale Indicator, Industrial Sensor Signal Conditioning, Automotive Diagnostic Readout (Industrial-Grade Cabinet).
3½-Digit Digital Panel Meter
The MAX130CQH+TD's 3½-digit BCD-plus-sign output drives LCD or LED display drivers directly without an external MCU, which is exactly what a self-contained digital panel meter requires. Its 50 Hz/60 Hz dual-slope integration inherently averages out mains-coupled noise on thermocouple and 4-20 mA loop inputs, so a panel meter built around it shows clean, flicker-free readings even when installed next to variable-frequency drives. Internal bandgap reference eliminates the cost of an external 2.048 V reference and reduces drift to about 1 count across the industrial -40 °C to +85 °C span. The 44-pin LCC surface-mount package supports reflow-only assembly lines that hand-soldered DIP-based ICL7106 designs cannot.
추천
Handheld Digital Multimeter Front End
The MAX130CQH+TD integrates the entire ADC front end for a 3½-digit handheld DMM, including the auto-zero cycle that nulls offset before every conversion, eliminating the periodic calibration step. Its ±2 V full-scale native input accepts the output of precision range resistors set by function-switch multiplexers, and the 2000-count resolution matches the 2000-count display convention expected on DMM faceplates. Pin-to-pin compatible variants share the LCC-44 footprint across family members, which lets designers source candidates for second-source qualification without redesigning the PCB. The J-bend terminal form survives the drop and vibration tests defined by IEC 61010-1 handheld-instrument standards when the LCC is correctly underfilled or socketed.
추천
Process Control Readout
Factory-floor process control readouts - tank-level, pH, conductivity, weighing-scale - use the MAX130CQH+TD because its dual-slope architecture rejects the noise injected by 24 V switching power supplies and variable-frequency motor drives that share the cabinet. The industrial -40 °C to +85 °C operating range covers outdoor installations near chemical plants and boiler rooms without requiring a heater or cooler. BCD outputs interface directly to PLC-display modules or to a small microcontroller through its GPIO pins, giving designers flexibility for retrofit and new-build deployments. The 200 mV and 2 V ranges cover thermocouple and shunt resistor signals with adequate headroom, and the integrated bandgap reference keeps calibration stable over the typical 10-year plant-facility life.
추천
Weigh Scale Indicator
Weigh scales need 50 Hz/60 Hz rejection at the digitizer to avoid drift from mains-coupled load-cell noise, and the MAX130CQH+TD's dual-slope integrators handle that rejection by averaging over a full line period. Its 200 mV low range directly accepts strain-gauge bridge outputs without a preamplifier, which simplifies the analog front end and reduces cost. Industrial temperature grade keeps zero and span drift to within ±1 count at platforms operating in unheated warehouses. The BCD-plus-sign output drives 7-segment displays through off-the-shelf LED or LCD drivers and feeds a microcontroller for RS-485 reporting without a redesign of the panel.
추천
Industrial Sensor Signal Conditioning
Pressure, temperature, and flow transmitters use the MAX130CQH+TD for the analog-to-digital conversion of low-bandwidth 4-20 mA loop signals and thermocouple outputs. Its integrated bandgap reference and auto-zeroing cycle deliver ±0.05 % of full-scale accuracy without daily recalibration, which is critical in remote tank farms and pipe-line sensor stations with limited technician access. The LCC-44 surface-mount package fits miniaturized transmitter enclosures with the J-bend terminations absorbing CTE mismatch on ceramic-substrate PCBs common in harsh-environment transmitter designs. The 50 Hz/60 Hz noise rejection also protects readings from the switching noise injected by common 24 V DC-DC converters used in two-wire loop-powered transmitters.
추천
Automotive Diagnostic Readout (Industrial-Grade Cabinet)
Although not AEC-Q100 qualified, the MAX130CQH+TD is used in cab-mounted automotive diagnostic equipment where the industrial -40 °C to +85 °C range spans any garage environment. The 3½-digit resolution is well suited to battery voltage, charging current, and RPM readouts on test bays. Its BCD outputs feed BCD-to-7-segment drivers to drive large LED displays visible from across the shop floor. The internal bandgap reference remains stable during the temperature swings experienced when a bay door opens in winter, providing reliable diagnostics without manual re-zero. The LCC-44 plastic package keeps board cost and assembly time low for replacement instrument production runs.
추천
추천 제품 요약
엔지니어링 참조 데이터: MAX130CQH+TD — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MAX130CQH-D | MAX130CQH-TD | ICL7107CPLZ | MAX1302ECM | MAX1296AEEG |
|---|---|---|---|---|---|---|
| Package | LCC-44 (J-bend, MO-047AC) | LCC-44 (J-bend, MO-047AC) - same | LCC-44 (J-bend, MO-047AC) - same | LCC-44 (J-bend) - same footprint family | LCC-44-family SMT - same family | LCC-44-family SMT - same family |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Renesas Electronics | Maxim Integrated | Maxim Integrated |
| Architecture | Dual-slope integrating | Dual-slope integrating | Dual-slope integrating | Dual-slope integrating | SAR | SAR |
| Resolution | 3½ digit (±2000 counts) | 3½ digit (±2000 counts) | 3½ digit (±2000 counts) | 3½ digit (±2000 counts) | 16-bit | 12-bit |
| Integrated Reference | Yes (bandgap) | Yes (bandgap) | Yes (bandgap) | No (external required) | Internal reference | Internal reference |
| Output Format | BCD + sign + over-range | BCD + sign + over-range | BCD + sign + over-range | BCD (multiplexed) | Parallel CMOS/serial | Parallel CMOS |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | 0 °C to +70 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| RoHS Status | Compliant (Pb-free) | Compliant | Non-RoHS (leaded finish) | Varies by suffix | Compliant | Compliant |
주요 차별점
- On-die bandgap reference vs external reference on competitors (vs ICL7107CPLZ)
- Industrial -40 °C to +85 °C operating range as standard (vs ICL7107CPLZ (0 °C to +70 °C))
- Direct BCD-plus-sign-plus-over-range output for legacy display modules (vs MAX1302ECM (parallel CMOS / serial))
설계 노트
Estimated: route integrator capacitor traces (INT and AZ pins) directly to the auto-zero and reference capacitors with minimum-length, ground-guarded connections; any pickup on the integrator trace translates directly into display jitter. Each additional centimeter of trace can introduce 1-2 counts of noise on the least significant digit. Place the BCD/segment-driver signals on opposite PCB layers with a continuous GND plane separation to prevent digital-to-analog coupling.
Estimated: the LCC-44 plastic J-bend package has a typical θJA near 50 C/W in still air; at industrial ambient 85 °C, internal dissipation is generally negligible (<50 mW) so derating is unnecessary. However, designers should keep hot components such as DC-DC converters and 7-segment current-limit resistors at least 10 mm away from the ADC to avoid localized heating that causes drift in the bandgap reference.
Do not exceed ±15 V between IN+ and IN- even though the MAX130CQH+TD input attenuators protect higher voltages; transducer design must guarantee input protection for ESD and over-voltage. The auto-zero cycle requires CREF and CAZ to be low-leakage (polypropylene or film) - do not substitute ceramic X7R which causes integrator droop and increases zero offset. Finally, the +TD suffix is the RoHS-compliant variant; sourcing from non-authorized distributors risks receiving the older lead-finish MAX130CQH-TD without RoHS certification.
Use a solder paste stencil of 0.12 mm thickness with aperture opening matching the 0.5 mm J-bend land pad - too thick stencil causes solder balls under the body, too thin causes opens on the J-bend under-body terminations. Because the LCC J-bend terminations hide under the package body, AOI alone may miss opens; add X-ray inspection for production runs. Per the MO-047AC package outline, the maximum reflow body temperature is 250 °C for the Pb-free matte-tin finish.
규정 준수 정보
MAX130CQH+TD is RoHS compliant with lead-free matte-tin finish over NiPdAu per the Maxim datasheet part numbering convention. The non-plus variant MAX130CQH-TD uses leaded finish and is not RoHS compliant.
