My Inquiry
My Account
Analog Devices Inc. AD7768-1BCPZ
- Part No.:
- AD7768-1BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7768-1BCPZ.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 28LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7768-1BCPZ from Analog Devices is a single-channel, low-power, high-precision Σ-Δ analog-to-digital converter optimized for dynamic signal analysis in data acquisition systems. It delivers 108.5 dB typical dynamic range, ±1.1 ppm FSR INL, −120 dB THD, 24-bit resolution with no missing codes, and supports programmable ODR up to 1024 kSPS using sinc5 filtering - enabling high-fidelity ac/dc measurement in USB/PXI/Ethernet DAQ and clinical vital signs monitoring.
For engineers reviewing the AD7768-1BCPZ datasheet, AD7768-1BCPZ pinout, AD7768-1BCPZ application, or AD7768-1BCPZ equivalent, key selection considerations include its configurable FIR/sinc3/sinc5 digital filters, power-scaling modes (6.75–36.8 mW), 50/60 Hz line rejection capability, 28-lead LFCSP package, and support for true bipolar analog supplies and external reference inputs.
Technical Context
The AD7768-1BCPZ integrates a Σ-Δ modulator with three selectable digital filter paths: low-ripple FIR (±0.005 dB passband ripple, 110.8 kHz BW), low-latency sinc5 (1.024 MHz ODR, <3/ODR group delay), and fully programmable sinc3 (50/60 Hz rejection, 60 ms settling). Its clocking architecture supports external MCLK (up to 17 MHz) or internal 16.384 MHz oscillator, with decimation rates independently configurable per filter type.
It implements embedded analog features including precharge buffers on analog inputs (reducing input current to −20 µA) and full reference buffering (300 nA typical REFIN current), enabling simplified front-end design for ratiometric measurements and low-noise sensor interfacing without external op-amps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit sigma-delta ADC with guaranteed no missing codes at all ODRs |
| Dynamic Range | 108.5 dB typical (FIR filter, 256 kSPS), enabling high-SNR vibration/acoustic analysis |
| THD | −120 dB typical (1 kHz, −0.25 dBFS), critical for low-distortion audio and biomedical signal capture |
| INL | ±1.1 ppm of FSR (endpoint method), supporting precision dc calibration in test equipment |
| ODR Range | 1 kSPS to 1024 kSPS across three power modes - enables trade-off between latency, bandwidth, and power |
| Power Consumption | 6.75 mW (low power FIR mode) to 36.8 mW (fast FIR mode) - scalable for battery-powered or high-density DAQ |
| Analog Supply | AVDD1–AVSS = 5.0 V typical; AVDD2–AVSS = 2.0–5.0 V; IOVDD–DGND = 1.8–3.3 V - supports split-rail true bipolar operation |
| Operating Temp | −40°C to +125°C - qualified for industrial and automotive-adjacent embedded DAQ environments |
Pinout & Package
Package: 28-lead, 4 mm × 5 mm LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad. RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ | Differential analog input positive | Accepts rail-to-rail input with precharge buffer reducing drive burden; supports true bipolar operation |
| AIN− | Differential analog input negative | Paired with AIN+; common-mode range extends to AVSS and AVDD1 rails |
| REFIN+ | External reference voltage positive | 1 V to AVDD1–AVSS range; buffered input draws only 300 nA - enables direct connection to precision references |
| REFIN− | External reference voltage negative | Reference return; supports ratiometric sensor interfaces with buffered reference sense |
| MCLK | Main clock input | Accepts 0.6–17 MHz CMOS clock or 8–17 MHz crystal; determines maximum ODR and modulator frequency |
| DRDY | Data ready indicator | Open-drain output signals valid conversion result; synchronizes read timing in SPI or pin-control mode |
| DOUT/RDY | Serial data output or RDY indicator | Configurable as SPI data line or secondary RDY signal - supports multi-device synchronization |
| SYNC_IN | Multi-device synchronization input | Enables deterministic phase alignment of multiple AD7768-1BCPZ devices for channel-isolated DAQ systems |
| VCM | Common-mode output | Programmable output at (AVDD1–AVSS)/2; provides bias for differential sensor interfaces and ADC input stages |
| RESET | Hardware reset input | Active-low asynchronous reset; 100 µs startup time to first DRDY - ensures deterministic initialization |
Key Features
| Feature | Design Value |
|---|---|
| Programmable digital filter selection | FIR (low ripple, linear phase), sinc5 (ultra-low latency), or sinc3 (50/60 Hz rejection) - each with independent decimation control |
| Three-tier power scaling | Fast (36.8 mW), Median (19.7 mW), Low Power (6.75 mW) modes - dynamically match noise, bandwidth, and energy budget |
| Embedded analog front-end | Precharge buffers on AIN+/AIN− reduce input current to −20 µA; full reference buffer draws only 300 nA - eliminates need for external op-amps |
| Comprehensive diagnostics | On-chip CRC for interface, memory map, and temperature monitoring - supports functional safety requirements in industrial DAQ |
| Flexible digital interface | Pin-control mode (no firmware required) or SPI (4-wire, 50 ns min SCLK period) - simplifies integration into FPGA or microcontroller-based systems |
| Multi-device synchronization | Synchronous sampling across multiple AD7768-1BCPZ via SYNC_IN/SYNC_OUT - enables precise time-aligned acquisition in modular DAQ chassis |
Applications
| Sound & Vibration Analysis | Clinical Biopotential Monitoring |
|---|---|
Use Scenario: Capturing broadband acoustic emissions from rotating machinery for predictive maintenance analytics. IC Role / Device Role / Timing Role: High-resolution, low-latency ADC capturing 0–110.8 kHz signals with FIR filtering and 108.5 dB DR for SNR-critical spectral analysis. Use Value: Enables detection of sub-millivolt bearing fault harmonics in noisy industrial environments without external anti-aliasing filters. | Use Scenario: Simultaneous acquisition of EEG, EMG, and ECG waveforms in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision 24-bit Σ-Δ ADC with sinc3 filter configured for 50/60 Hz line rejection and ±30 µV offset error for microvolt-level biopotential fidelity. Use Value: Eliminates need for external notch filters while maintaining >100 dB CMRR up to 10 kHz - critical for artifact-free neurophysiological recordings. |
| Modular USB/PXI DAQ | Control Loop Hardware-in-the-Loop |
Use Scenario: Channel-isolated, high-density data acquisition modules for benchtop test systems. IC Role / Device Role / Timing Role: Single-channel platform ADC providing reusable footprint across isolated/non-isolated variants; supports SPI daisy-chaining and SYNC_IN synchronization. Use Value: Reduces BOM count and layout complexity by standardizing on one ADC across multiple measurement types (voltage, current, thermocouple). | Use Scenario: Real-time closed-loop testing of motor drives and power converters using rapid feedback sampling. IC Role / Device Role / Timing Role: Ultra-low-latency sinc5 path (1.024 MHz ODR, <3/ODR group delay) feeding FPGA-based PID controllers. Use Value: Achieves sub-microsecond loop timing margin - enabling stable control of fast-switching SiC/GaN inverters without external FIFO buffering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7768BCPZ | 8-channel simultaneous-sampling variant; identical per-channel specs but higher total power (140 mW typical); shared digital interface resources | Required when multi-channel synchronized acquisition is needed; not suitable for space-constrained single-channel designs | Select AD7768BCPZ only if ≥2 channels must sample at identical timestamps - AD7768-1BCPZ saves PCB area and power for point-measurement use cases. |
| LTC2500-32I#PBF | 32-bit delta-sigma ADC; higher resolution but fixed 150 kSPS ODR; no programmable FIR/sinc3/sinc5 filters; larger 40-lead QFN package | Better suited for ultra-high-precision dc metrology than dynamic signal analysis; lacks 50/60 Hz rejection and multi-mode power scaling | Choose LTC2500-32I#PBF for static calibration standards; AD7768-1BCPZ is superior for mixed ac/dc DAQ requiring bandwidth flexibility and low-latency control paths. |
Compared with AD7768BCPZ, the AD7768-1BCPZ reduces system power by >70% and board area by 55% for single-input applications, while retaining identical per-channel performance and filter configurability. Against LTC2500-32I#PBF, it offers 3× wider ODR range, integrated line-rejection filters, and 40% lower active power - making it optimal for portable and real-time DAQ platforms.
Availability
AD7768-1BCPZ is available at Aetrix Electronics and suitable for sound and vibration analysis, clinical biopotential monitoring, modular USB/PXI DAQ, and hardware-in-the-loop control verification requiring stable component supply across production lifecycles.
Supply support for AD7768-1BCPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA, serving industrial, communications, automotive, and healthcare markets.
The AD7768-1BCPZ belongs to Analog Devices' precision data acquisition portfolio, designed specifically to unify high-fidelity ac and dc measurement in compact, low-power, software-configurable DAQ platforms - targeting instrumentation, predictive maintenance, and clinical diagnostics.
FAQ
What is the maximum output data rate (ODR) achievable with the AD7768-1BCPZ?
The AD7768-1BCPZ achieves up to 1024 kSPS using the sinc5 digital filter with an MCLK of 16.384 MHz. This mode delivers 52.224 kHz input bandwidth at 26.4 mW power consumption. The low-ripple FIR filter supports up to 256 kSPS (110.8 kHz bandwidth, 36.8 mW), while the sinc3 filter reaches 256 kSPS with programmable 50/60 Hz rejection. All ODRs are software-configurable via register writes or pin strapping.
Does the AD7768-1BCPZ require an external reference voltage?
Yes, the AD7768-1BCPZ requires an external reference voltage applied to the REFIN+ and REFIN− pins. The supported range is 1 V to AVDD1–AVSS (e.g., 1 V to 5 V). It includes a full reference buffer that draws only 300 nA typical current, enabling direct connection to precision voltage references like the ADR45xx series without loading error. Reference precharge buffering further reduces dynamic current demand during conversions.
How does the AD7768-1BCPZ support 50 Hz and 60 Hz line frequency rejection?
The AD7768-1BCPZ supports 50 Hz and 60 Hz line rejection through its fully programmable sinc3 digital filter. When configured in sinc3 mode, the device allows precise decimation rate selection (e.g., decimation by 100 or 120) to place nulls exactly at 50 Hz or 60 Hz and their harmonics. This eliminates the need for external analog notch filters and maintains >80 dB normal-mode rejection without degrading signal integrity or adding phase distortion.
Can the AD7768-1BCPZ operate from a single 3.0 V supply?
Yes, the AD7768-1BCPZ supports single-supply operation in low power mode: AVDD1, AVDD2, and IOVDD can all be tied to a single 3.0 V rail. In this configuration, it delivers 13.9 kHz bandwidth and 6.75 mW power consumption using the FIR filter at 32 kSPS. Performance remains fully specified - including ±40 µV offset error and 100.9 dB dynamic range - ensuring reliable operation in battery-powered portable DAQ systems.
What diagnostic features are built into the AD7768-1BCPZ?
The AD7768-1BCPZ integrates three independent CRC mechanisms: interface CRC (validates SPI command integrity), memory map CRC (detects register corruption), and fuse CRC (confirms factory programming). It also includes on-chip temperature monitoring and GPIO-accessible status flags for ADC errors, SPI interface faults, and digital diagnostic failures - enabling robust fault detection and recovery in safety-critical industrial DAQ applications.
AD7768-1BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 1.024M
- Number of Inputs:
- 1
- Input Type:
- Differential, Pseudo-Differential
- Data Interface:
- Serial, SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2V ~ 5.5V
- Voltage - Supply, Digital:
- -
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 28-LFCSP (5x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7768-1BCPZ FAQ
1.How can I place an order for AD7768-1BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7768-1BCPZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7768-1BCPZ reliable?
The price and inventory of AD7768-1BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7768-1BCPZ is usually 5 days.
3.What payment methods are accepted for AD7768-1BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7768-1BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7768-1BCPZ?
AD7768-1BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7768-1BCPZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7768-1BCPZ?
For technical support, including AD7768-1BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7768-1BCPZ requirements.
6.How does Aetrix verify that AD7768-1BCPZ is sourced from the original manufacturer or authorized distributors?
All AD7768-1BCPZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7768-1BCPZ meets industry standards.
7.What is the process for return or replacement of AD7768-1BCPZ?
All AD7768-1BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7768-1BCPZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7768-1BCPZ part is unused and in its original packaging.
Return procedure for AD7768-1BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7768-1BCPZ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
