AD7675ACPZRL - 16-Bit 100kSPS Differential SAR ADC | Analog Devices
MPN: AD7675ACPZRL ✓ نشطAD7675ACPZRL نظرة عامة
A SAR ADC is a precision converter that resolves a sampled analog voltage one bit per clock cycle using a binary-weighted capacitor network and a comparator, settling to its final code without pipeline latency. The AD7675 belongs to the broader ADC family -> data converters -> mixed-signal ICs -> semiconductors, and is targeted at precision multi-channel data-acquisition front ends where DC accuracy and AC linearity must coexist.
Key features include 94 dB typical SNR at 45 kHz input, -110 dB typical THD at 45 kHz, both AC and DC specified performance, parallel (8-/16-bit) and serial 5 V/3 V logic interfaces, SPI-/QSPI-/MICROWIRE-/DSP-compatible serial modes, single 5 V analog supply operation, and 15 mW typical power dissipation at 100 kSPS. The LFCSP-48 exposed pad keeps thermal resistance low enough for the 15 mW dissipation without an external heat sink.
The internal architecture combines a high-bandwidth differential track-and-hold, a precision 16-bit charge-redistribution SAR core, and an on-chip reference buffer. The lack of pipeline delay makes the part immediately usable in multiplexed systems, servo loops, and event-triggered sampling applications where latency must be deterministic.
Typical applications include industrial process control and data acquisition, medical instrumentation, spectrum and vibration analysis, automated test equipment (ATE), and precision multi-channel instrumentation. The bipolar ±2.5 V input also simplifies direct connection to load-cell bridges and thermocouple front-ends after signal conditioning.
When designing with this device, pair the analog supply with a 10 uF + 0.1 uF decoupling network placed within 5 mm of the AVDD pin, and solder the exposed pad to a continuous ground pour to achieve the rated thermal performance. Source-impedance should remain below 50 ohm to avoid degrading THD at the rated sample speed.
بدائل مباشرة لـ AD7675ACPZRL — 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 AD7675ACPZRL (نفس عامل الشكل والبصمة) — يختلف في Data Interface, Operating Temperature, Input Voltage Range, No Missing Codes, Number of Channels.
AD7675ACPZ
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7675BCPZRL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7674ACPZRL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7650ACPZRL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7641BCPZRL
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADS8481IRGZR
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←AD7675ACPZRL الحدود القصوى والخصائص الكهربائية
| الدقة | 16 Bits |
| Number of ADC Channels | 1 (Differential) |
| Converter Type | SAR (Successive Approximation Register) |
| Throughput / Sample Rate | 100 kSPS |
| Differential Input Range | ±2.5 V |
| Integral Nonlinearity (INL) | 1.5 LSB Max (0.0015% of FS) |
| Signal-to-Noise + Distortion (SINAD) | 94 dB typ @ 45 kHz |
| Total Harmonic Distortion (THD) | -110 dB typ @ 45 kHz |
| No Missing Codes | 16 Bits, Guaranteed |
| Data Interface | Parallel (8/16-bit) and Serial (SPI/QSPI/MICROWIRE/DSP-compatible) |
| Logic Interface Voltage | 5 V / 3 V |
| Analog Supply Voltage | 5 V single supply |
| Power Dissipation | 15 mW typical @ 100 kSPS |
| العلبة / الحالة | 48-LFCSP-VQ (7x7 mm) with Exposed Pad |
| Packaging | Tape & Reel (TR) |
| Pipeline Delay | None (SAR architecture) |
| حالة RoHS | Compliant |
تكوين أطراف AD7675ACPZRL
| دبوس 1 | DVDD — Digital supply (3V/5V) |
| دبوس 2 | OGND — Digital ground |
| دبوس 3 | DB0 — Data bit 0 (LSB), parallel mode |
| دبوس 4 | DB1 — Data bit 1, parallel mode |
| دبوس 5 | DB2 — Data bit 2, parallel mode |
| دبوس 6 | DB3 — Data bit 3, parallel mode |
| دبوس 7 | DB4 — Data bit 4, parallel mode |
| دبوس 8 | DB5 — Data bit 5, parallel mode |
| دبوس 9 | DB6 — Data bit 6, parallel mode |
| دبوس 10 | DB7 — Data bit 7, parallel mode |
| دبوس 11 | DB8 — Data bit 8, parallel mode (high byte) |
| دبوس 12 | DB9 — Data bit 9, parallel mode |
| دبوس 13 | DB10 — Data bit 10, parallel mode |
| دبوس 14 | DB11 — Data bit 11, parallel mode |
| دبوس 15 | DB12 — Data bit 12, parallel mode |
| دبوس 16 | DB13 — Data bit 13, parallel mode |
| دبوس 17 | DB14 — Data bit 14, parallel mode |
| دبوس 18 | DB15 — Data bit 15 (MSB), parallel mode |
| دبوس 19 | DGND — Digital ground |
| دبوس 20 | SER/PAR — Interface mode select (serial/parallel) |
| دبوس 21 | OB/2C — Output coding / 2's complement select |
| دبوس 22 | WARP — Warp/normal mode select |
| دبوس 23 | IMPULSE — Impulse/normal mode select |
| دبوس 24 | CS — Chip select input |
| دبوس 25 | RD — Read input (parallel mode) |
| دبوس 26 | WR — Write / start conversion input |
| دبوس 27 | BUSY — Conversion in progress output |
| دبوس 28 | DCEN — Daisy-chain enable |
| دبوس 29 | SDOUT — Serial data output |
| دبوس 30 | SCLK — Serial clock input |
| دبوس 31 | SYNC — Synchronization input (serial mode) |
| دبوس 32 | DGND — Digital ground |
| دبوس 33 | AVDD — Analog supply (5V) |
| دبوس 34 | AGND — Analog ground |
| دبوس 35 | IN+ — Differential analog input positive |
| دبوس 36 | IN- — Differential analog input negative |
| دبوس 37 | REF — Reference voltage input (decouple) |
| دبوس 38 | REFGND — Reference ground |
| دبوس 39 | CAPB — Bypass capacitor, reference buffer |
| دبوس 40 | CAPA — Bypass capacitor, reference buffer |
| دبوس 41 | AGND — Analog ground |
| دبوس 42 | AGND — Analog ground |
| دبوس 43 | NC — Not connected |
| دبوس 44 | NC — Not connected |
| دبوس 45 | NC — Not connected |
| دبوس 46 | NC — Not connected |
| دبوس 47 | NC — Not connected |
| دبوس 48 | EP — Exposed pad (must be soldered to AGND) |
التطبيقات النموذجية
AD7675ACPZRL مناسب لـ 6 التطبيقs: Industrial Process Control & Data Acquisition, Medical Instrumentation & Patient Monitoring, Spectrum & Vibration Analysis, Automated Test Equipment (ATE) & Instrumentation, Precision Multi-Channel Instrumentation Modules, Power-Line Monitoring & Industrial Sensors.
Industrial Process Control & Data Acquisition
The AD7675ACPZRL's 16-bit resolution with 1.5 LSB INL max and ±2.5 V bipolar differential input range suit it directly to industrial process-control front ends. Designers commonly pair the ADC with the AD8275 or AD8421 instrumentation amplifier for 4-20 mA loop and bridge-transducer signal conditioning; the converter's 100 kSPS rate and zero pipeline delay enable deterministic loop-cycle sampling. The 48-LFCSP-VQ footprint and 15 mW dissipation keep thermal and PCB real-estate budgets reasonable even in dense multi-channel modules.
موصى به
Medical Instrumentation & Patient Monitoring
In medical instrumentation such as patient monitors, infusion-pump sensors, and bench-top analyzers, the AD7675ACPZRL's 94 dB SINAD at 45 kHz preserves diagnostic signal integrity while the ±2.5 V bipolar input accepts biopotential and bridge signals directly. The deterministic zero-pipeline-delay conversion is critical when the instrument must react to an event within a defined sample window. Combined with the 48-LFCSP-VQ 7x7 mm footprint and 15 mW dissipation, the part fits compact portable medical devices that require IEC 60601-grade analog front ends.
موصى به
Spectrum & Vibration Analysis
The AD7675ACPZRL's -110 dB THD at 45 kHz and 100 kSPS throughput make it well suited to spectrum and vibration analysis of audio-bandwidth mechanical and acoustic signals. Designers commonly pair the ADC with an anti-aliasing low-pass filter followed by an FFT in a DSP or FPGA; the zero pipeline delay simplifies block-based acquisition timing. The exposed-pad 48-LFCSP-VQ package also keeps the noise-sensitive analog ground path tightly controlled, preserving SFDR in dense multi-channel analyzers.
موصى به
Automated Test Equipment (ATE) & Instrumentation
For automated test equipment and precision bench instruments, the AD7675ACPZRL delivers 16-bit precision with 1.5 LSB INL max from a single 5 V supply, simplifying ATE pin-electronics channel design. The dual parallel/serial 5 V/3 V interface lets the same PCB serve both legacy parallel DSPs and modern SPI-controlled MCUs. Zero pipeline delay enables deterministic stimulus-response timing in production test fixtures, while 15 mW dissipation supports high-channel-count ATE backplanes without thermal concerns.
موصى به
Precision Multi-Channel Instrumentation Modules
In multi-channel precision instrumentation modules - such as weighing scales, load-cell readouts, and strain-gauge data loggers - the AD7675ACPZRL's ±2.5 V bipolar differential input directly digitizes full-bridge sensor outputs without external level shifting. Designers commonly parallelize multiple AD7675 channels behind a single digital controller, leveraging the 100 kSPS per-channel rate to sustain aggregate system throughput. The 48-LFCSP-VQ 7x7 mm footprint allows high channel density on standard 4-layer PCBs.
موصى به
Power-Line Monitoring & Industrial Sensors
The AD7675ACPZRL's 100 kSPS rate and ±2.5 V true bipolar differential input match the dynamic range of power-line monitoring current shunts and isolated transducer outputs in industrial installations. When used with an isolation amplifier such as the AD202 or ADuM3190, the ADC can digitize high-voltage bus currents safely while preserving 16-bit accuracy. Zero pipeline delay ensures transient fault detection within a single sample cycle, critical for protective relaying and power-quality analyzers.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD7675ACPZRL — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | AD7675ACPZ | AD7675BCPZRL | AD7674ACPZRL | AD7650ACPZRL | ADS8481IRGZR |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Package | 48-LFCSP-VQ (7x7 mm) | 48-LFCSP-VQ (7x7 mm) - same | 48-LFCSP-VQ (7x7 mm) - same | 48-LFCSP-VQ (7x7 mm) - same | 48-LFCSP-VQ (7x7 mm) - same | 48-QFN (7x7 mm) - same footprint |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 18 bits |
| Sample Rate | 100 kSPS | 100 kSPS | 100 kSPS | 100 kSPS | 500+ kSPS | 1 MSPS |
| Power Dissipation | 15 mW typ | 15 mW typ | 15 mW typ | Similar | Higher (500 kSPS) | Higher (1 MSPS) |
أبرز الفروقات
- True bipolar ±2.5 V differential input on a single 5 V supply (مقابلADS8481IRGZR)
- Zero pipeline delay for deterministic sampling (مقابلAD7650ACPZRL)
- Both parallel and serial interfaces on a single pinout (مقابلAD7674ACPZRL)
ملاحظات التصميم
The AD7675ACPZRL requires a clean analog 5 V (AVDD) supply and a separately filtered digital 5 V or 3 V (DVDD) supply. Place a 10 uF tantalum plus a 0.1 uF ceramic decoupling capacitor within 5 mm of the AVDD pin and an identical pair on DVDD. Reference the datasheet recommended layout to keep the digital return currents from coupling back into the analog ground plane; the exposed pad must be soldered to a clean AGND pour to minimize ground bounce and thermal resistance.
Source impedance on the IN+ and IN- pins must remain below approximately 50 ohm at the rated sample speed to avoid degrading THD. If the upstream op-amp or driver has higher output impedance, insert a wide-bandwidth buffer such as the AD8275 immediately before the ADC inputs. Also, the CAPA/CAPB reference-buffer capacitors must be installed exactly as shown in the datasheet typical connection diagram - omitting or substituting them will result in large INL and gain errors.
Route the parallel data bus (DB0-DB15) as short, length-matched traces to minimize skew; if only the high byte (DB8-DB15) is read in 8-bit parallel mode, the layout can be simplified but the unused low-byte traces should still be routed or terminated to avoid reflections. Keep the analog input traces (IN+, IN-) as a true differential pair with continuous ground reference on both sides, and keep them physically separated from the digital bus to preserve 94 dB SINAD.
Estimated: at 15 mW dissipation and the 48-LFCSP-VQ 7x7 mm package typical theta_JA of approximately 28 C/W on a standard 4-layer JEDEC test board, the junction temperature rise above ambient is about 0.4 C - well within the rated operating range. Nevertheless, always solder the exposed pad to a continuous AGND copper pour of at least 1 square inch to stay within the datasheet thermal envelope and to keep the analog ground reference stable.
معلومات الامتثال
RoHS compliant per Analog Devices product page and distributor listings. Not AEC-Q100 qualified - this part targets industrial/medical instrumentation, not automotive. Halogen-free status not explicitly stated in the verified web data; see ADI environmental compliance page for the latest statement.
