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Analog Devices Inc. AD7653ACPZ
- Part No.:
- AD7653ACPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD7653ACPZ.pdf
- Description:
- IC ADC 16BIT SAR 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,513
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Product details
Overview
AD7653ACPZ from Analog Devices is a 16-bit, 1 MSPS charge redistribution SAR analog-to-digital converter with integrated 2.5 V reference, unipolar 0 V to 2.5 V input range, no pipeline delay, and dual parallel/serial (SPI/QSPI/MICROWIRE/DSP-compatible) interface - used in high-speed data acquisition systems requiring precision timing and low-latency conversion.
For engineers reviewing the AD7653ACPZ datasheet, AD7653ACPZ pinout, AD7653ACPZ application, or AD7653ACPZ equivalent, this page delivers verified technical context, real-world interface timing behavior, confirmed power-performance trade-offs across Warp/Normal/Impulse modes, and validated alternative options for instrumentation-grade ADC selection.
Technical Context
The AD7653ACPZ implements a charge redistribution SAR architecture with internal error correction circuitry and a fully integrated conversion clock. It supports three deterministic throughput modes: Warp (1 µs cycle, 1 MSPS), Normal (1.25 µs cycle, 800 kSPS), and Impulse (1.5 µs cycle, 666 kSPS), where power scales linearly with sampling rate.
Its dual-interface design enables simultaneous support for 16-bit parallel bus operation and 2-wire serial communication (master/slave), both compatible with 3 V or 5 V logic levels. The device integrates an internal 2.5 V reference with ±7 ppm/°C drift and offers external reference flexibility via REFBUFIN and PDREF control pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 38.15 µV LSB step size over 0 V to 2.5 V input range. |
| Max Throughput | 1 MSPS in Warp mode - enables sub-microsecond conversion cycles for real-time signal capture. |
| Analog Input Range | 0 V to 2.5 V unipolar - requires no level-shifting circuitry when paired with 2.5 V reference. |
| Reference | Internal 2.48–2.52 V at 25°C, ±7 ppm/°C drift - eliminates need for external reference in cost-sensitive designs. |
| Power Dissipation | 128 mW typ @ 1 MSPS with REF - balances speed and thermal budget in compact embedded systems. |
| INL / DNL | ±6 LSB / –2 to +3 LSB - ensures monotonicity and <0.1% full-scale linearity error for measurement integrity. |
| SNR / SFDR | 86 dB / 98 dB @ 100 kHz - supports high-fidelity spectrum analysis and medical waveform digitization. |
Pinout & Package
AD7653ACPZ is packaged in a 48-lead LFCSP (CP-48-1) with exposed pad, rated for –40°C to +85°C operation. The package supports AGND-connected EPAD for improved thermal performance but does not require it for electrical specification compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN / INGND | Analog input differential pair | Primary unipolar signal path; IN accepts 0 V to 2.5 V, INGND is dedicated analog ground return. |
| REF / REFGND | Integrated reference output | 2.5 V reference source with ±7 ppm/°C drift; REFGND isolates reference ground from AGND. |
| CNVST | Conversion start trigger | Falling-edge–initiated sample/hold hold command; determines exact aperture timing (2 ns delay). |
| BUSY | Conversion status indicator | Active-HIGH pulse signals conversion progress; falling edge marks data readiness for readout. |
| SER/PAR | Interface mode select | LOW = parallel 16-bit bus (D[15:0]); HIGH = serial mode repurposes D[0:10] as SCLK/SDOUT/SYNC. |
| WARP / IMPULSE | Throughput mode control | WARP HIGH + IMPULSE LOW = 1 MSPS; IMPULSE HIGH + WARP LOW = power-scaled 666 kSPS mode. |
| PDREF / PDBUF | Reference enable/buffer control | PDREF LOW enables internal reference; PDBUF LOW activates internal buffer for REF/REFBUFIN routing. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY falls - enables deterministic latency-critical control loops. |
| Three-speed operational modes | Warp/Normal/Impulse modes allow runtime trade-off between throughput (1 MSPS), accuracy stability, and power (138 µW @ 1 kSPS). |
| Internal reference with low drift | 2.5 V ±20 mV at 25°C and ±7 ppm/°C over –40°C to +85°C - reduces BOM count and layout sensitivity. |
| Dual-voltage interface support | Parallel and serial ports operate with either 3 V or 5 V logic - simplifies integration with mixed-supply FPGA/microcontroller systems. |
| Temperature sensor output | TEMP pin provides 300 mV @ 25°C with 1 mV/°C slope - enables on-chip thermal monitoring without external sensors. |
Applications
| Portable Spectrum Analyzer | Medical ECG Signal Digitizer |
|---|---|
|
Use Scenario: Real-time RF spectral analysis in handheld test equipment with battery-powered operation. IC Role / Device Role / Timing Role: Primary ADC capturing baseband I/Q samples at ≥666 kSPS with minimal latency and calibrated amplitude fidelity. Use Value: Impulse mode cuts power to 92 mW at 666 kSPS while maintaining 86 dB SNR and 98 dB SFDR for clean FFT bins. |
Use Scenario: High-resolution biopotential acquisition in Class II medical devices with strict noise and linearity requirements. IC Role / Device Role / Timing Role: Front-end digitizer for analog ECG front-end, converting conditioned lead signals with <±6 LSB INL. Use Value: Internal 2.5 V reference eliminates external reference drift contribution, ensuring stable 16-bit baseline accuracy over temperature. |
| Industrial Process Controller | Automated Test Equipment (ATE) |
|
Use Scenario: Closed-loop feedback sampling in PLC analog I/O modules requiring deterministic timing and long-term calibration stability. IC Role / Device Role / Timing Role: Synchronized conversion node triggered by CNVST edge, feeding FPGA-based PID engine with zero-pipeline-delay data. Use Value: Warp mode delivers 1 MSPS throughput with 1 µs cycle time and no missing codes - enabling 1 µs jitter-free control update intervals. |
Use Scenario: Multi-channel precision stimulus/response measurement in benchtop ATE platforms with parallel data capture. IC Role / Device Role / Timing Role: High-speed digitizer interfacing directly to FPGA via 16-bit parallel bus with RD/CS handshaking. Use Value: Parallel interface supports burst reads at >20 MHz bus rates; BUSY falling edge serves as synchronous data-ready strobe. |
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 |
|---|---|---|---|
| AD7652ASTZ | Same 16-bit SAR core and pinout, but lacks internal reference and operates only with external 2.5 V reference. | Requires external reference design and layout; better suited for systems needing ultra-low-drift external references. | Select AD7652ASTZ when reference flexibility and lower temperature coefficient (<2 ppm/°C with external ref) outweigh integration benefits. |
| AD7654BSTZ | Dual-channel, simultaneous sampling 16-bit SAR ADC; shares same timing and interface architecture but adds second channel and inter-channel isolation. | Enables phase-coherent multi-sensor acquisition (e.g., motor current + voltage), not supported by single-channel AD7653ACPZ. | Choose AD7654BSTZ for synchronized dual-input applications like power quality monitoring or motor control feedback. |
Compared with AD7652ASTZ and AD7654BSTZ, the AD7653ACPZ uniquely combines integrated reference, single-channel simplicity, and three-speed operational modes - making it optimal for space-constrained, cost-sensitive, or thermally sensitive single-input precision digitization tasks.
Availability
AD7653ACPZ is available at Aetrix Electronics and suitable for portable spectrum analyzers, medical ECG digitizers, industrial process controllers, automated test equipment, and battery-powered instrumentation requiring stable component supply and guaranteed long-term manufacturability.
Supply support for AD7653ACPZ 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 AD7653ACPZ belongs to the PulSAR™ family of precision SAR ADCs designed specifically for high-speed, low-latency, and low-power data acquisition in instrumentation, medical, and industrial control systems.
FAQ
What is the maximum sampling rate of the AD7653ACPZ and under what conditions is it achieved?
The AD7653ACPZ achieves a maximum sampling rate of 1 MSPS in Warp mode, which requires WARP pin HIGH and IMPULSE pin LOW. This mode mandates a minimum conversion rate to guarantee full specified accuracy, and the complete conversion cycle is 1 µs. At 1 MSPS, typical power dissipation is 128 mW with internal reference enabled.
Does the AD7653ACPZ require an external reference, or does it include an internal one?
The AD7653ACPZ includes an internal 2.5 V reference with typical output of 2.48–2.52 V at 25°C and ±7 ppm/°C temperature drift. When PDREF is driven LOW, the internal reference is activated; when PDREF is HIGH, the device disables the internal reference and expects an external reference applied to REFBUFIN. The AD7653ACPZ does not require an external reference for basic operation.
How does the AD7653ACPZ handle interface compatibility with both 3 V and 5 V logic systems?
The AD7653ACPZ supports dual-voltage interface operation: OVDD can be supplied from either 2.7 V to 5.25 V, allowing direct connection to 3 V or 5 V host logic. Its digital inputs accept VIH down to 2.0 V and VIL up to +0.8 V, and outputs drive VOH ≥ OVDD – 0.6 V and VOL ≤ 0.4 V - ensuring interoperability with mixed-supply microcontrollers and FPGAs without level shifters.
What are the key timing characteristics that define data readiness in the AD7653ACPZ?
Data readiness in the AD7653ACPZ is signaled by the BUSY pin: it goes HIGH at CNVST falling edge and returns LOW upon conversion completion and data latching into the shift register. The falling edge of BUSY is specified as the data-ready event, with t6 (BUSY HIGH to LOW delay) ≤10 ns. In parallel mode, DATA[15:0] is valid within t10 (≤1.25 µs in Impulse mode) after CNVST.
Can the AD7653ACPZ operate in low-power modes, and how is power scaled with throughput?
Yes - the AD7653ACPZ features Impulse mode (IMPULSE HIGH, WARP LOW) where power dissipation scales approximately linearly with throughput: 92 mW typical at 666 kSPS and only 138 µW at 1 kSPS (with reference disabled). This makes it suitable for battery-powered systems requiring adaptive sampling rates without sacrificing 16-bit resolution or linearity.
AD7653ACPZ 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):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Pseudo-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, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7653ACPZ FAQ
1.How can I place an order for AD7653ACPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7653ACPZ 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 AD7653ACPZ reliable?
The price and inventory of AD7653ACPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7653ACPZ is usually 5 days.
3.What payment methods are accepted for AD7653ACPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7653ACPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7653ACPZ?
AD7653ACPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7653ACPZ 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 AD7653ACPZ?
For technical support, including AD7653ACPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7653ACPZ requirements.
6.How does Aetrix verify that AD7653ACPZ is sourced from the original manufacturer or authorized distributors?
All AD7653ACPZ 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 AD7653ACPZ meets industry standards.
7.What is the process for return or replacement of AD7653ACPZ?
All AD7653ACPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7653ACPZ, 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 AD7653ACPZ part is unused and in its original packaging.
Return procedure for AD7653ACPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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