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Analog Devices Inc. AD7663ACPZ
- Part No.:
- AD7663ACPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD7663ACPZ.pdf
- Description:
- IC ADC 16BIT SAR 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,133
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Product details
Overview
AD7663ACPZ from Analog Devices is a 16-bit, 250 kSPS charge redistribution SAR analog-to-digital converter operating from a single 5 V supply. It delivers ±3 LSB INL, 90 dB SNR at 100 kHz, and supports bipolar (±10 V, ±5 V) and unipolar (0 V to 10 V) input ranges. It serves as the precision front-end ADC in high-fidelity data acquisition systems requiring zero pipeline delay and dual serial/parallel interface flexibility.
For engineers reviewing the AD7663ACPZ datasheet, AD7663ACPZ pinout, AD7663ACPZ application, or AD7663ACPZ equivalent, key selection criteria include its 48-lead LFCSP package, 2.75 µs transient response, SPI/QSPI/MICROWIRE compatibility, and factory-calibrated DC/AC performance across –40°C to +85°C.
Technical Context
The AD7663ACPZ implements a switched-capacitor SAR architecture with an integrated resistor-based input scaler enabling programmable analog input ranges without external components. Its internal conversion clock, error correction circuitry, and dual-mode interface (16-bit parallel or 2-wire serial) eliminate external timing control overhead.
It features hardware-calibrated linearity (INL ≤ ±3 LSB), no missing codes over 16 bits, and simultaneous support for straight binary and twos-complement output formats via OB/2C control. The device achieves 90 dB SNR and –100 dB THD at 100 kHz while maintaining 35 mW typical power dissipation at full throughput.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement integrity. |
| Throughput Rate | 250 kSPS (4 µs conversion cycle) - enables real-time sampling of signals up to 800 kHz bandwidth with Nyquist compliance. |
| INL | ±3 LSB max - ensures end-point linearity error ≤ 0.0046% FSR, critical for calibration-sensitive instrumentation. |
| SNR / THD | 90 dB / –100 dB at 100 kHz - supports high dynamic range applications like spectrum analysis and medical imaging. |
| Power Dissipation | 35 mW at 250 kSPS; 15 µW at 100 SPS - enables low-power operation in battery-powered or thermally constrained systems. |
| Analog Input Ranges | Bipolar: ±10 V, ±5 V, ±2.5 V; Unipolar: 0–10 V, 0–5 V, 0–2.5 V - configurable via external resistor network per Table I. |
| Interface Modes | Parallel (8/16-bit) or serial (SPI/QSPI/MICROWIRE/DSP-compatible) - allows flexible host processor integration with 3 V or 5 V logic. |
Pinout & Package
AD7663ACPZ is packaged in a 48-lead Lead Frame Chip Scale Package (LFCSP), measuring 7 mm × 7 mm × 0.85 mm, with exposed thermal pad for enhanced thermal performance. Pin numbering follows standard ST-48/CP-48 top-view layout with Pin 1 identifier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IND(4R), INC(4R), INB(2R), INA(R) | Analog input scaling nodes | Configure input range (e.g., ±10 V, 0–5 V) by connecting to REF/INGND per Table I; define input impedance (2.56–5.85 kΩ). |
| CNVST | Conversion start trigger | Falling-edge–initiated sample-and-hold; supports low-jitter synchronous sampling with aperture delay of 2 ns. |
| BUSY | Conversion status indicator | Active-HIGH during conversion; falling edge signals valid data ready - usable as hardware handshake or interrupt source. |
| SER/PAR | Interface mode select | LOW = parallel (D[15:0]); HIGH = serial (SDOUT/SCLK/SYNC); configures D[11:8] and D[7:0] for dual-role functionality. |
| OB/2C | Output format control | HIGH = straight binary; LOW = twos-complement - enables direct signed arithmetic in DSP/microcontroller firmware. |
| PD | Power-down enable | HIGH enters 7 µW standby mode; retains configuration but halts conversions - essential for duty-cycled sensor systems. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY goes LOW - eliminates latency-induced phase errors in closed-loop motor control. |
| Factory-calibrated DC/AC performance | Guaranteed INL, gain/offset, SNR, and THD across temperature - reduces system-level calibration effort and test time. |
| Single 5 V supply operation | AVDD = DVDD = 5 V; OVDD supports 2.7–5.25 V - simplifies power design and enables direct interfacing with 3 V or 5 V hosts. |
| Configurable input scaling | Hardware-selectable ranges via four analog input pins - avoids external op-amp level-shifting circuits and associated noise/error sources. |
| Serial interface compatibility | Native SPI/QSPI/MICROWIRE/DSP timing - permits drop-in integration with FPGA, ARM Cortex-M, and TI C2000 microcontrollers. |
Applications
| Data Acquisition System | Motor Control Feedback Loop |
|---|---|
|
Use Scenario: High-channel-count industrial DAQ capturing synchronized voltage/current waveforms at 250 kSPS. IC Role / Device Role / Timing Role: Primary SAR ADC with track-and-hold, providing 16-bit resolution and <2.75 µs transient response for step-input fidelity. Use Value: Eliminates need for external anti-aliasing filters due to 800 kHz –3 dB input bandwidth and supports multi-channel multiplexing without latency artifacts. |
Use Scenario: Real-time current sensing in servo drives using shunt resistors with ±5 V differential inputs. IC Role / Device Role / Timing Role: Precision analog front-end converting motor phase currents into digital feedback for field-oriented control (FOC) algorithms. Use Value: ±3 LSB INL ensures torque ripple <0.1% FS; 90 dB SNR enables detection of sub-mA current variations under PWM switching noise. |
| Medical Imaging Signal Chain | Communications Test Equipment |
|
Use Scenario: Digitizing low-noise photodiode outputs in ultrasound beamforming or CT detector modules. IC Role / Device Role / Timing Role: Low-power, high-SNR ADC operating at 100 SPS–250 kSPS with 15 µW standby consumption between pulses. Use Value: 35 mW active power and 7 µW power-down mode extend battery life in portable diagnostic devices while preserving 16-bit dynamic range. |
Use Scenario: Baseband signal digitization in RF vector signal analyzers requiring wideband spectral purity. IC Role / Device Role / Timing Role: High-fidelity acquisition stage delivering 100 dB SFDR and –100 dB THD for accurate modulation error ratio (MER) measurement. Use Value: Factory-calibrated AC specs ensure traceable ENOB >14.8 bits at 100 kHz, meeting IEEE 1057 Class A requirements for metrology-grade instruments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7664AST | Differential input architecture; higher 3.5 LSB INL; same 250 kSPS, LQFP-48 package. | Requires fully differential signal sources; less suitable for single-ended industrial sensors. | Select when input signal is inherently differential and common-mode rejection is prioritized over absolute INL. |
| AD7665AST | True bipolar input with ±10 V range; 2.5 LSB INL; 500 kSPS throughput; LQFP-48. | Higher speed and tighter linearity, but consumes 55 mW at full rate and lacks LFCSP option. | Choose for faster sampling in space-constrained designs where thermal budget allows higher power. |
Compared with AD7664AST and AD7665AST, the AD7663ACPZ offers the smallest footprint (LFCSP), lowest power at partial throughput (15 µW @ 100 SPS), and optimal balance of INL (±3 LSB) and interface flexibility for single-ended sensor interfaces in embedded instrumentation.
Availability
AD7663ACPZ is available at Aetrix Electronics and suitable for data acquisition, motor control, and medical instrumentation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AD7663ACPZ 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 Norwood, MA.
The AD7663ACPZ belongs to the PulSAR® family of precision SAR ADCs, designed specifically for high-speed, low-power, and high-accuracy measurement applications in industrial, medical, and communications equipment.
FAQ
What is the maximum analog input voltage range supported by the AD7663ACPZ?
The AD7663ACPZ supports bipolar input ranges of ±10 V, ±5 V, and ±2.5 V, and unipolar ranges of 0 V to 10 V, 0 V to 5 V, and 0 V to 2.5 V. These are configured via external connections to IND(4R), INC(4R), INB(2R), and INA(R) pins per Table I in the datasheet. Absolute maximum ratings allow up to –11 V to +30 V on analog inputs, but operational ranges are limited by reference voltage and internal scaling.
Does the AD7663ACPZ require an external reference voltage?
Yes, the AD7663ACPZ requires an external reference voltage applied to the REF pin, with a specified range of 2.3 V to (AVDD – 1.85 V), typically 2.5 V. The REFGND pin must be tied to a clean analog ground. The device draws only 50 µA from the reference at 250 kSPS, minimizing burden on reference buffers.
Can the AD7663ACPZ operate with a 3 V digital interface while using a 5 V analog supply?
Yes. The AD7663ACPZ supports independent OVDD (output interface supply) from 2.7 V to 5.25 V, allowing direct connection to 3 V logic families. AVDD and DVDD remain at 5 V for analog and core digital operation. This enables seamless interfacing with 3 V microcontrollers without level shifters.
What is the significance of the BYTESWAP pin on the AD7663ACPZ?
The BYTESWAP pin controls byte ordering in parallel mode: when LOW, D[7:0] carries the LSB and D[15:8] the MSB; when HIGH, D[7:0] carries the MSB and D[15:8] the LSB. This allows alignment with host processor endianness (e.g., little-endian ARM vs. big-endian DSP), eliminating software byte-reordering overhead in firmware.
How does the power-down mode function on the AD7663ACPZ?
Asserting PD HIGH places the AD7663ACPZ into power-down mode, reducing supply current to ≤7 µW while retaining register state. Conversions halt after completion of the current cycle. Recovery time is negligible - CNVST can restart conversion immediately upon PD return to LOW, making it ideal for burst-mode sensing.
AD7663ACPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI, Parallel, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- True Bipolar
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7663ACPZ FAQ
1.How can I place an order for AD7663ACPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7663ACPZ 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 AD7663ACPZ reliable?
The price and inventory of AD7663ACPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7663ACPZ is usually 5 days.
3.What payment methods are accepted for AD7663ACPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7663ACPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7663ACPZ?
AD7663ACPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7663ACPZ 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 AD7663ACPZ?
For technical support, including AD7663ACPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7663ACPZ requirements.
6.How does Aetrix verify that AD7663ACPZ is sourced from the original manufacturer or authorized distributors?
All AD7663ACPZ 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 AD7663ACPZ meets industry standards.
7.What is the process for return or replacement of AD7663ACPZ?
All AD7663ACPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7663ACPZ, 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 AD7663ACPZ part is unused and in its original packaging.
Return procedure for AD7663ACPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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