ADS7807PBG4 - 16-Bit 40kHz SAR ADC | Texas Instruments
Артикул: ADS7807PBG4 ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $19.5 | $19,50 |
| 10 | $17.55 | $175,50 |
| 100 | $15.2 | $1.520,00 |
| 500 | $13.4 | $6.700,00 |
| 1.000 | $11.85 | $11.850,00 |
ADS7807PBG4 Обзор
A successive-approximation-register ADC is a type of data converter that performs a binary search through successive bit trials to resolve the input voltage in N clock cycles for N bits of resolution. SAR ADCs sit within the broader data-converter hierarchy of Nyquist-rate sampling ADCs, distinct from sigma-delta and pipeline architectures. They are prized for low latency, single-shot precision, and simplicity, making them the workhorse choice for industrial control loops, sensor digitisation, and instrumentation front ends.
Key features of the ADS7807PBG4 include bipolar input ranges of ±5 V and 0 V to +4 V (plus 0 V to +5 V depending on configuration) without external signal conditioning, an integrated sample-and-hold amplifier, and flexible serial (SPI-compatible) or parallel data interface. The 25 µs maximum acquisition-and-conversion cycle keeps loop delays minimal, while external reference support lets designers trade noise, scale, and temperature drift against cost.
The ADS7807PBG4 uses a charge-redistribution DAC array with a custom CMOS comparator and laser-trimmed resistors to achieve 16-bit linearity without missing codes across the full operating temperature range. Its input stage accepts single-ended bipolar signals through internal level-shifting, and the digital interface provides straight binary or two's-complement output coding for direct micro-controller or DSP hand-off.
Typical applications include industrial process control, multi-channel data-acquisition systems, portable instrumentation, weigh scales, and battery-powered sensor digitisation. The low power dissipation makes it ideal for remote or handheld equipment.
Designers should provide adequate input bandwidth, a low-impedance reference with a 10 µF bypass capacitor, and short analog-trace routing to preserve 86 dB SINAD. Do not exceed the absolute maximum ratings; for bipolar inputs add external clamping to keep transients within ±25 V.
This page consolidates distributor pricing, drop-in alternatives, and design guidance that goes beyond the manufacturer datasheet to accelerate your evaluation and sourcing decisions.
Аналоги без доработки для ADS7807PBG4 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ADS7807PBG4 (тот же форм-фактор и посадочное место) — отличается по Package, Data Interface, Sampling Rate, Supply Voltage, Input Voltage Range.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADS7806PG4
✅ Прямая замена✓ В наличии
$13.2 / шт.
Открыть даташит →ADS7806UG4
✅ Прямая замена✓ В наличии
$9.85 / шт.
Открыть даташит →ADS7805PB
✅ Прямая замена✓ В наличии
$10.95 / шт.
Открыть даташит →ADS7805PG4
✅ Прямая замена✓ В наличии
$17.9 / шт.
Открыть даташит →ADS7804PB
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADS7807PBG4 Максимальные параметры и электрические характеристики
| Number of Bits | 16 |
| Частота дискретизации | 40 kSPS |
| Number of Inputs | 1 |
| Input Type | Single-Ended |
| Data Interface | Serial (SPI), Parallel |
| Architecture | SAR (Successive Approximation) |
| Configuration | S/H-ADC |
| Ratio S/H:ADC | 1:1 |
| Number of A/D Converters | 1 |
| Reference Type | External |
| Напряжение питания | 5 V (single supply) |
| Power Dissipation (max) | 35 mW |
| Power-Down Mode Current | 50 µW |
| Acquisition + Conversion Time (max) | 25 µs |
| INL (max) | ±1.5 LSB |
| DNL | 16 bits, no missing codes |
| SINAD (min, 1 kHz input) | 86 dB |
| Input Range | ±5 V and 0 to +4 V |
| Рабочая температура | -40 °C to +85 °C |
| Корпус | 28-DIP (0.300 inch, 7.62 mm) |
| Packaging | Tube |
| Статус RoHS | Compliant |
Конфигурация выводов ADS7807PBG4
| Контакт 1 | AIN — Analog input |
| Контакт 2 | REF — External reference input |
| Контакт 3 | AGND — Analog ground |
| Контакт 4 | VREF — Reference voltage decoupling |
| Контакт 5 | VDD — +5 V analog supply |
| Контакт 6 | DGND — Digital ground |
| Контакт 7 | CS/RD — Chip select / Read strobe |
| Контакт 8 | RC — Reference capacitor |
| Контакт 9 | PAR/SER — Parallel/Serial mode select |
| Контакт 10 | HBEN — High byte enable (parallel mode) |
| Контакт 11 | SCLK — Serial clock |
| Контакт 12 | SDATA — Serial data output |
| Контакт 13 | TAG — Tag input |
| Контакт 14 | D0 — Parallel data bit 0 (LSB) |
| Контакт 15 | D1 — Parallel data bit 1 |
| Контакт 16 | D2 — Parallel data bit 2 |
| Контакт 17 | D3 — Parallel data bit 3 |
| Контакт 18 | D4 — Parallel data bit 4 |
| Контакт 19 | D5 — Parallel data bit 5 |
| Контакт 20 | D6 — Parallel data bit 6 |
| Контакт 21 | D7 — Parallel data bit 7 |
| Контакт 22 | D8 — Parallel data bit 8 |
| Контакт 23 | D9 — Parallel data bit 9 |
| Контакт 24 | D10 — Parallel data bit 10 |
| Контакт 25 | D11 — Parallel data bit 11 |
| Контакт 26 | D12 — Parallel data bit 12 |
| Контакт 27 | D13 — Parallel data bit 13 |
| Контакт 28 | D14 — Parallel data bit 14 (MSB-1) |
Типичное применение
ADS7807PBG4 подходит для 6 применениеs: Industrial Process Control Loops, Portable Battery-Powered Instrumentation, Multi-Channel Data Acquisition Systems, Weigh Scales and Load-Cell Digitisation, Temperature and Pressure Sensor Digitisation, Audio and Vibration Measurement Front Ends.
Industrial Process Control Loops
The ADS7807PBG4 suits industrial process-control loops requiring low-latency, single-shot 16-bit conversions. Its 40 kSPS throughput and 25 µs acquisition-plus-conversion cycle allow control loops running at 1 kHz update rates without sigma-delta filter settling. The ±5 V bipolar input accepts transducer outputs directly, eliminating external signal conditioning. The 28-DIP package remains through-hole-friendly for industrial backplanes where vibration tolerance matters. Pair it with a precision 5 V reference such as the REF02GPZ5 and a 10 µF bypass to maintain 86 dB SINAD across noisy factory environments.
Рекомендуется
Portable Battery-Powered Instrumentation
The ADS7807PBG4's 35 mW active power and 50 µW power-down mode make it ideal for battery-powered handheld instruments such as multimeters, portable data loggers, and field calibrators. Designers can duty-cycle conversions with the power-down pin to extend battery life to weeks or months. The single +5 V supply allows direct operation from a USB or 4-cell NiMH stack with a boost regulator. The 28-DIP package supports through-hole PCB assembly common in ruggedised handheld enclosures. Its 86 dB SINAD preserves measurement integrity needed for laboratory-grade readings.
Рекомендуется
Multi-Channel Data Acquisition Systems
The ADS7807PBG4 pairs naturally with external analog multiplexers in multi-channel data-acquisition cards where 16-bit resolution and low-latency conversion are required per channel. The 40 kSPS throughput allows sequencing through 8-16 channels at 2.5-5 kHz per channel, sufficient for vibration monitoring and sensor array readouts. The serial SPI-compatible output reduces opto-isolation channel count compared with parallel-output ADCs. Combined with a precision 5 V reference, it delivers 86 dB SINAD suitable for industrial-grade measurements. The 28-DIP form factor is well-suited to legacy DAQ backplanes.
Рекомендуется
Weigh Scales and Load-Cell Digitisation
Weigh scales and load-cell readouts benefit from the ADS7807PBG4's ±1.5 LSB INL and 16-bit no-missing-codes performance, which preserves calibration linearity across the full sensor range. Its differential bipolar input stage accepts strain-gauge bridges directly when paired with an external instrumentation amplifier. The 40 kSPS throughput supports settling-time averaging for stable weight readings while the 86 dB SINAD supports high-resolution force and balance measurements. The 28-DIP package remains popular in OEM weighing equipment where through-hole PCB assembly reduces manufacturing cost.
Рекомендуется
Temperature and Pressure Sensor Digitisation
The ADS7807PBG4 digitises outputs from precision temperature and pressure sensors in industrial instrumentation, accepting 0-4 V unipolar or ±5 V bipolar transducer signals directly. Its 16-bit resolution and 86 dB SINAD preserve the dynamic range of sensors with sub-millivolt-per-unit sensitivities. The 25 µs acquisition-and-conversion cycle supports closed-loop regulation at sub-10 ms update intervals. With single +5 V supply operation, it integrates cleanly into industrial sensor modules. The 28-DIP package supports through-hole mounting for harsh-environment transducer housings.
Рекомендуется
Audio and Vibration Measurement Front Ends
The ADS7807PBG4 functions as a low-latency digitiser in audio-bandwidth vibration analysis where the single-shot SAR conversion avoids the digital-filter settling delay of sigma-delta alternatives. Its 40 kSPS sampling rate supports audio analysis up to ~18 kHz bandwidth, suitable for machinery-health monitoring. Combined with a 5 V precision reference, it provides 86 dB SINAD enabling spectral analysis of vibration signatures. The 28-DIP package remains widely supported by vibration-data-acquisition backplanes. Designers may also choose the ADS7805 series for higher-bandwidth vibration analysis up to 45 kHz.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADS7807PBG4 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ADS7806PG4 | ADS7806UG4 | ADS7805PB | ADS7805PG4 | ADS7804PB |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-DIP (0.300 inch) | 28-DIP (0.300 inch) - same | 28-DIP (0.300 inch) - same | 28-DIP (0.300 inch) - same | 28-DIP (0.300 inch) - same | 28-DIP (0.300 inch) - same |
| Resolution | 16 bit | 12 bit | 12 bit | 16 bit | 16 bit | 12 bit |
| Sampling Rate | 40 kSPS | 40 kSPS | 40 kSPS | 100 kSPS | 100 kSPS | 100 kSPS |
| INL (max) | ±1.5 LSB | ±0.5 LSB | ±0.5 LSB | ±2 LSB | ±2 LSB | ±1 LSB |
| SINAD (min, 1 kHz) | 86 dB | 72 dB | 72 dB | 86 dB | 86 dB | 70 dB |
| Power Dissipation (max) | 35 mW | 35 mW | 35 mW | 50 mW | 50 mW | 50 mW |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Ключевые отличия
- True bipolar ±5 V input without external conditioning (против ADS7806PG4)
- Higher precision than 12-bit family predecessors (против ADS7804PB)
- Higher throughput than ADS7807 base but compatible pinout (против ADS7805PB)
Заметки по проектированию
Power the ADS7807PBG4 from a clean +5 V rail with a 10 µF tantalum and 0.1 µF ceramic bypass capacitor placed within 5 mm of the VDD pin. The device draws 35 mW active and 50 µW in power-down; duty-cycling with the CS/RD pin can extend battery life by 100x in portable applications. Use star-ground topology to prevent digital return currents from corrupting the analog ground reference.
Route analog input traces as short, guarded differential pairs with AGND on both sides. Keep digital lines (CS, SCLK, PAR/SER, data bus) away from AIN and REF traces by at least 5 mm. The 28-DIP package supports a socketed through-hole assembly; place a clean analog ground plane on the component side and stitch with vias around the AIN/REF/AGND pins. Decouple REF with a 10 µF tantalum in parallel with a 0.01 µF ceramic.
For bipolar ±5 V inputs, drive AIN from a low-impedance source (<100 Ω) to preserve 86 dB SINAD. Add an external RC anti-alias filter with fc ≈ 200 kHz before the input when sampling at 40 kSPS. The integrated S/H settles within 25 µs acquisition time; longer acquisitions do not improve accuracy but shorter may exceed INL limits. Match the external reference drive impedance to the datasheet's 5 mA load specification.
Do not exceed the absolute maximum analog input voltage of ±25 V (transient). The bipolar input mode requires tying HBEN/PAR-SER configuration bits correctly before power-up. Avoid switching the PAR/SER pin during conversion - this corrupts the conversion result. When migrating from the ADS7806/7804 family, verify the input range strapping matches your design's bipolar/unipolar requirement; the ADS7807 supports both via pin configuration.
Информация о соответствии
RoHS compliant per TI product page. Not AEC-Q100 qualified - this part is industrial/consumer-grade. Part status is obsolete per TI; lead-free packaging is confirmed via DigiKey part detail page. Halogen-free status not stated in available data.
