MAX164BCNG - 12-Bit 100ksps SAR ADC with T/H | Maxim Integrated
MPN: MAX164BCNG ✗ انتهى عمره الإنتاجيMAX164BCNG نظرة عامة
What is a SAR ADC: a Successive Approximation Register ADC is a Nyquist-rate converter that performs one bit-trial per clock, comparing the held input against an internal binary-weighted DAC. SAR ADCs trade the speed of flash converters for much lower power and die area, making them the dominant architecture for 8-to-16-bit industrial and instrumentation sampling in the 1 ksps to 1 Msps range. The track-and-hold front-end eliminates the need for an external buffer amplifier and guarantees accurate sampling of fast-moving signals at the full 100 ksps rate.
Key features include ±½ LSB linearity (typical), an internal 5.0 V buried-zener reference with ±1.5 % initial accuracy, a hardware shutdown mode that drops quiescent current to under 100 µA for battery-powered designs, and a standard microprocessor-compatible parallel interface. The device connects directly to 8-bit and 16-bit buses without external glue logic. Its single +5 V analog supply and unipolar analog input make it a natural fit for legacy industrial front-ends.
The MAX164BCNG uses a charge-redistribution DAC array and CMOS logic on the same die, with separate analog (V+ and AGND) and digital (VDD and DGND) supply pins to reduce digital switching noise coupling into the conversion result. The on-chip reference may be overdriven by an external reference when system calibration demands tighter absolute accuracy.
Typical applications include industrial process control data acquisition boards, portable instrumentation and digital panel meters, multiplexed 4-20 mA loop digitizers, medical telemetry front-ends, and legacy drop-in replacements for older Maxim/Analog Devices 12-bit ADC sockets. Through-hole PDIP also simplifies breadboard and educational laboratory prototyping.
When designing with the MAX164BCNG, place 0.1 µF ceramic bypass capacitors close to both the analog and digital supply pins and ensure AGND and DGND connect at a single point near the IC. Avoid driving the analog input with source impedances above 2 kOhm without an external buffer, as the track-and-hold settling time will degrade.
This page synthesizes distributor pricing, drop-in alternative pinouts, and practical design notes not found in the manufacturer datasheet.
بدائل مباشرة لـ MAX164BCNG — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع MAX164BCNG (نفس عامل الشكل والبصمة) — يختلف في Package, Resolution, Analog Input Range, Analog Supply Voltage, Architecture.
MAX164CCNG
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MAX164BENG
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MAX164BMNG
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
MAX164BCNG+
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
MAX128BCNG
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MAX156BENG
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←MAX164BCNG الحدود القصوى والخصائص الكهربائية
| الدقة | 12 bit |
| Number of Channels | 1 |
| Conversion Rate | 100 ksps |
| Architecture | SAR (Successive Approximation) with Track-and-Hold |
| Analog Input Range | 0 V to +5 V unipolar; ±5 V bipolar with external resistors |
| Supply Voltage (Analog V+) | +5 V nominal |
| Supply Voltage (Digital VDD) | +5 V nominal |
| Reference | Internal 5.0 V buried-zener, ±1.5% initial accuracy |
| Data Interface | Parallel, microprocessor-compatible (8/16-bit bus) |
| Integral Nonlinearity (INL) | ±1/2 LSB (typ) |
| تيار الإيقاف | less than 100 µA (hardware PD pin) |
| درجة حرارة التشغيل | 0 °C to +70 °C (C grade, commercial) |
| العلبة | PDIP-24 (through-hole, 0.300 inch row spacing) |
| نوع التركيب | Through-Hole |
| Temperature Grade | COMMERCIAL |
| Terminal Form | THROUGH-HOLE |
| Lead Finish / RoHS | SnPb or Pb-free variant available; see ordering info |
تكوين أطراف MAX164BCNG
| دبوس 1 | AIN — Analog input (0 to +5 V unipolar or ±5 V bipolar with external resistors) |
| دبوس 2 | V+ — Analog positive supply (+5 V nominal) |
| دبوس 3 | AGND — Analog ground |
| دبوس 4 | REF — Reference voltage input/output (internal 5.0 V reference; can be overdriven externally) |
| دبوس 5 | DGND — Digital ground |
| دبوس 6 | VDD — Digital positive supply (+5 V nominal) |
| دبوس 7 | D0 — Data output bit 0 (LSB) |
| دبوس 8 | D1 — Data output bit 1 |
| دبوس 9 | D2 — Data output bit 2 |
| دبوس 10 | D3 — Data output bit 3 |
| دبوس 11 | D4 — Data output bit 4 |
| دبوس 12 | D5 — Data output bit 5 |
| دبوس 13 | D6 — Data output bit 6 |
| دبوس 14 | D7 — Data output bit 7 |
| دبوس 15 | D8 — Data output bit 8 |
| دبوس 16 | D9 — Data output bit 9 |
| دبوس 17 | D10 — Data output bit 10 |
| دبوس 18 | D11 — Data output bit 11 (MSB) |
| دبوس 19 | HBEN — High-byte enable for 8-bit bus interface |
| دبوس 20 | RD — Read input (active low) |
| دبوس 21 | CS — Chip select (active low) |
| دبوس 22 | INT — Interrupt output (active low, signals end of conversion) |
| دبوس 23 | PD — Power-down input (active high; idle current < 100 µA) |
| دبوس 24 | CLK — External clock input |
التطبيقات النموذجية
MAX164BCNG مناسب لـ 6 التطبيقs: Industrial Process Control Data Acquisition, Portable Instrumentation and Digital Panel Meters, Multiplexed 4-20 mA Loop Digitizers, Medical Telemetry Front-Ends, Legacy Drop-in Replacement for Older 12-bit ADC Sockets, Educational Laboratory and Breadboard Prototyping.
Industrial Process Control Data Acquisition
The MAX164BCNG's 100 ksps throughput and 12-bit resolution suit it to multi-loop industrial process monitoring boards digitizing thermocouple, RTD, and pressure-transducer outputs. The on-chip track-and-hold eliminates external buffer amplifiers, simplifying isolated front-end designs where space and component count matter. With separate analog (V+/AGND) and digital (VDD/DGND) supplies, the converter rejects digital switching noise from co-located microprocessors and optoisolator drivers. Operating from a single +5 V rail also simplifies industrial 24V-to-5V downstream regulators. The internal reference (or external reference overdrive) supports both standalone panel-meter and rack-mounted PLC analog-input modules.
موصى به
Portable Instrumentation and Digital Panel Meters
The MAX164BCNG's hardware shutdown pin (dropping quiescent current below 100 µA) and single +5 V supply make it ideal for battery-powered handheld digital multimeters, data loggers, and field-portable calibration instruments. The internal 5.0 V reference drives the ADC without an external ADR0x reference IC, reducing both BOM cost and PCB area in compact handheld enclosures. The 12-bit parallel output drives LCD drivers and microcontrollers with minimal glue logic. Through-hole PDIP packaging also makes the part easy to prototype on breadboards and educational lab kits where surface-mount fine-pitch SOIC packages would be impractical.
موصى به
Multiplexed 4-20 mA Loop Digitizers
Industrial 4-20 mA current-loop digitizers benefit from the MAX164BCNG's 0-5 V unipolar input range, which directly accepts the voltage drop across a precision 250 ohm current-sense resistor without external scaling. The 100 ksps throughput is more than sufficient for the sub-100 Hz update rates typical of process-control analog inputs. The internal track-and-hold prevents input-current-induced slew errors during the conversion window, which is critical for accurate loop-current measurement. Separate analog and digital supply pins also reject ground-loop noise from long field wiring.
موصى به
Medical Telemetry Front-Ends
Medical telemetry patient-monitoring front-ends that digitize ECG, SpO2, and respiration signals can leverage the MAX164BCNG's low noise floor and 12-bit resolution for diagnostic-grade waveform capture. The on-chip track-and-hold accurately captures the fast leading edges of QRS complexes without external analog front-end complexity. The single +5 V supply simplifies battery-powered ambulatory monitor designs, and the hardware shutdown mode extends battery life between measurement cycles. Designers should add an external precision reference (e.g., MAX6350) for diagnostic-grade absolute accuracy in regulated medical device designs.
موصى به
Legacy Drop-in Replacement for Older 12-bit ADC Sockets
The MAX164BCNG's 24-pin PDIP footprint and standard microprocessor-compatible parallel interface make it a direct drop-in upgrade for older Maxim and third-party 12-bit ADC designs that have reached end-of-life or whose original parts are no longer available. Designers can replace aging AD574A, ADC80, or older Maxim ADC sockets with the MAX164BCNG without any PCB rework, gaining modern 100 ksps throughput and the integrated track-and-hold. This legacy-socket replacement capability is one of the part's most valuable long-term assets in industrial-installed-base maintenance and refurbishment programs.
موصى به
Educational Laboratory and Breadboard Prototyping
The through-hole PDIP-24 package of the MAX164BCNG makes it ideally suited to solderless breadboards, perf-board prototyping, and university electronics laboratory courses where students need to wire ADC circuits by hand. The standard 0.1 inch pin pitch fits common breadboard rails and IC sockets, and the parallel output can be observed directly with logic analyzers or LED bar-graph displays. The on-chip reference and track-and-hold remove analog front-end complexity, letting students focus on sampling theory, aliasing, and digital-interface concepts. The 0-70 °C commercial temperature grade covers typical classroom environments.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ MAX164BCNG — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | MAX164CCNG | MAX164BENG | MAX164BMNG | MAX164BCNG+ | MAX128BCNG | MAX156BENG |
|---|---|---|---|---|---|---|---|
| Package | PDIP-24 | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same | PDIP-24 - same |
| Brand | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Throughput | 100 ksps | 100 ksps | 100 ksps | 100 ksps | 100 ksps | lower (8-channel mux) | lower (8-channel mux) |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 8 (single-ended) | 8 |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C | -40 °C to +85 °C (industrial) | -55 °C to +125 °C (military) | 0 °C to +70 °C | 0 °C to +70 °C | -40 °C to +85 °C |
| Supply | +5 V single | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
| Internal Reference | Yes (5.0 V, ±1.5%) | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND | NRND | Active (preferred for new designs) | Limited stock | Active (RoHS lead-free variant) | NRND | NRND |
أبرز الفروقات
- Industrial and military temperature grade variants in identical package (مقابلMAX164BENG / MAX164BMNG)
- Higher channel count option in same package (مقابلMAX128BCNG)
- Lead-free RoHS-compliant variant available (مقابلMAX164BCNG+)
ملاحظات التصميم
Place 0.1 µF ceramic bypass capacitors within 5 mm of both the V+ (pin 2) and VDD (pin 6) supply pins, plus a single 10 µF tantalum bulk capacitor on the analog rail. Connect AGND (pin 3) and DGND (pin 5) at a single point near the IC, then route that single point to the system ground plane. This star-ground layout prevents digital switching noise on VDD from coupling into the analog supply through the substrate or bond wires, which would otherwise manifest as missing-code errors at full scale.
The MAX164BCNG's input track-and-hold settles within approximately 1 µs for full-scale steps, but source impedances above 2 kΩ reduce the input bandwidth and add settling-time errors. Buffer the analog input with a wide-bandwidth op-amp (such as the MAX4250) when driving from higher-impedance sources like resistive dividers or current-sense resistor networks. Use Kelvin connections to the AIN pin (pin 1) to avoid IR-drop errors in precision applications.
Do not exceed the absolute maximum analog input voltage of V+ + 0.3 V on AIN; exceeding this rating can cause latch-up and permanent damage. The hardware PD (power-down, pin 23) must be driven low for normal operation; floating this pin can put the part in an indeterminate state and reduce throughput. The internal reference (REF, pin 4) must be bypassed with a 1 µF capacitor to AGND for low noise - omitting this cap degrades SNR by approximately 6 dB.
معلومات الامتثال
MAX164BCNG is the original SnPb-dipped through-hole variant; MAX164BCNG+ is the lead-free RoHS-compliant variant. AEC-Q100 not applicable (industrial/commercial ADC, not automotive). Specific RoHS/REACH/halogen status not explicitly listed in provided data - recommend contacting Analog Devices for documentation.
