My Inquiry
My Account
Analog Devices Inc. AD9248BCPZ-20
- Part No.:
- AD9248BCPZ-20
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9248BCPZ-20.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,919
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD9248BCPZ-20 from Analog Devices is a dual-channel, 14-bit, 20 MSPS analog-to-digital converter (ADC) fabricated in advanced CMOS, featuring integrated sample-and-hold amplifiers, on-chip voltage reference, and differential input with 500 MHz bandwidth. It operates from a single 3 V supply (2.7–3.6 V), delivers 73.4 dB SNR at 2.4 MHz input, supports offset binary or twos complement output format, and targets IF sampling in communications receivers.
For engineers reviewing the AD9248BCPZ-20 datasheet, AD9248BCPZ-20 pinout, AD9248BCPZ-20 application, or AD9248BCPZ-20 equivalent, key selection considerations include its dual-channel crosstalk immunity (>85 dB), clock duty cycle stabilizer (DCS), flexible 1–2 Vp-p analog input range, and LFCSP-64 package compatibility with industrial temperature operation (−40°C to +85°C).
Technical Context
The AD9248BCPZ-20 employs a multistage differential pipelined architecture with output error correction logic to guarantee 14-bit accuracy and no missing codes across temperature. Its dual SHA inputs support differential or single-ended configurations and enable high-frequency sampling beyond Nyquist via IF aliasing.
It integrates a programmable clock duty cycle stabilizer (DCS), shared/independent reference mode control (SHARED_REF), data multiplexing (MUX_SELECT), and independent channel power-down (PWDN_A/B) and output enable (OEB_A/B) - all managed via dedicated digital control pins and compatible with 2.5 V or 3.3 V logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees full-scale quantization with ≤1 LSB DNL and INL over industrial temperature range. |
| Sampling Rate | 20 MSPS - fixed maximum conversion rate for this speed grade; enables real-time digitization of baseband/IF signals up to 10 MHz Nyquist bandwidth. |
| SNR | 73.4 dB (at 2.4 MHz input) - defines dynamic range usable for high-fidelity signal capture in ultrasound and receiver front-ends. |
| Crosstalk | >85 dB - ensures minimal inter-channel coupling during simultaneous dual-channel acquisition, critical for I/Q demodulation. |
| Analog Input Range | 1 Vp-p to 2 Vp-p - user-selectable full-scale span accommodates varying signal chain gain without external attenuation or amplification. |
| Supply Voltage | AVDD = 2.7–3.6 V, DRVDD = 2.25–3.6 V - single-supply operation simplifies power design; separate analog/digital rails reduce noise coupling. |
| Power Consumption | 180 mW total (90 mW/channel) - low static power enables battery-powered instrumentation and thermal-constrained PCB layouts. |
Pinout & Package
AD9248BCPZ-20 is packaged in a Pb-free, 64-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad requiring connection to AGND. The package supports fine-pitch surface-mount assembly and provides low thermal resistance (θJA = 26.4°C/W with heat slug soldered to ground plane).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+_A / VIN−_A | Differential analog input for Channel A | Accepts 500 MHz bandwidth differential signal; supports DC-coupled or AC-coupled configurations with user-defined common-mode voltage. |
| CLK_A / CLK_B | Independent clock inputs per channel | Enable asynchronous sampling; duty cycle stabilizer (DCS) corrects timing skew from non-50% clocks to preserve SNR/SFDR performance. |
| PDWN_A / PDWN_B | Channel power-down control | Logic 1 disables respective ADC channel, reducing power to standby level (2 mW) while preserving configuration state. |
| OEB_A / OEB_B | Output enable for data buses A/B | Logic 0 activates 14-bit parallel LVCMOS outputs; logic 1 places pins in high-impedance state for bus sharing or reduced EMI. |
| OTR_A / OEB_B | Out-of-range indicator | Asserts when input exceeds ±FS/2; used with MSB to distinguish high/low overflow conditions in real-time signal monitoring. |
| SHARED_REF | Reference mode selection | High = shared reference between channels (improves gain matching); low = independent references (maximizes channel isolation). |
| DFS | Data format select | Low = offset binary; high = twos complement - determines sign bit interpretation for downstream DSP or FPGA processing. |
| MUX_SELECT | Data multiplexing control | Enables time-division multiplexing of both 14-bit outputs onto a single 14-bit bus, reducing PCB trace count and FPGA pin usage. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 14-bit pipelined ADC core | Guarantees no missing codes and ≤±2.7 LSB INL over −40°C to +85°C, enabling precision measurement without calibration in production systems. |
| Integrated voltage reference | 1.0 V (or 0.5 V) internal reference with ±35 mV error and <1 ppm/°C drift - eliminates need for external reference IC and associated layout complexity. |
| 500 MHz analog input bandwidth | Supports direct digitization of IF signals up to 70 MHz (with aliasing), eliminating intermediate downconversion stages in WB-CDMA and WiMAX receivers. |
| Clock duty cycle stabilizer (DCS) | Compensates for clock duty cycles from 30% to 70%, allowing use of low-cost crystal oscillators or PLLs without external duty-cycle correction circuitry. |
| Flexible digital interface | Configurable output format (offset binary/twos complement), independent channel enable/disable, and multiplexed data bus reduce FPGA resource utilization and PCB layer count. |
Applications
| Ultrasound Beamforming | IF Sampling Receiver |
|---|---|
|
Use Scenario: Simultaneous digitization of 64+ transducer channel echoes with precise time alignment for synthetic aperture processing. IC Role / Device Role / Timing Role: Dual-channel ADC capturing I/Q baseband signals from analog beamformer outputs at 20 MSPS with matched latency (7-cycle pipeline delay). Use Value: >85 dB crosstalk prevents channel bleed during multi-beam steering; low 180 mW power enables compact handheld probe integration. |
Use Scenario: Direct sampling of 70–120 MHz IF signals in CDMA2000 base station receivers, followed by digital downconversion. IC Role / Device Role / Timing Role: High-bandwidth ADC converting aliased IF bands into baseband; DCS maintains SFDR >80 dBc despite oscillator jitter. Use Value: 500 MHz input bandwidth and 71.5 dB SNR at 35 MHz input preserve signal fidelity for adjacent-channel rejection in wideband cellular standards. |
| Battery-Powered Scopemeter | Low-Cost Digital Oscilloscope |
|
Use Scenario: Portable field instrument acquiring transient waveforms up to 10 MHz with 14-bit vertical resolution and real-time FFT analysis. IC Role / Device Role / Timing Role: Dual ADC digitizing differential probe inputs; independent channel power-down extends battery life during single-channel operation. Use Value: 1–2 Vp-p input range adapts to passive/active probes without attenuator switching; LFCSP-64 enables compact 4-layer PCB design. |
Use Scenario: Entry-level bench oscilloscope supporting 2-channel, 20 MSPS acquisition with memory depth ≥1 kpts per channel. IC Role / Device Role / Timing Role: Cost-optimized dual ADC providing synchronized sampling with configurable data format for FPGA-based waveform reconstruction. Use Value: Pin-compatible upgrade path from AD9238-20 allows reuse of existing layout; MUX_SELECT reduces FPGA I/O count by 50% versus discrete data buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9248BCPZ-40 | Higher 40 MSPS sampling rate; 330 mW power; identical pinout and feature set. | Required for wider IF bandwidths (e.g., 20 MHz Nyquist) or faster transient capture in test equipment. | Select when system clock budget allows higher throughput and SNR degradation at >10 MHz input is acceptable. |
| AD9238BCPZ-20 | 12-bit resolution; same 20 MSPS rate, LFCSP-64 package, and pinout; lower 70 dB SNR and 125 mW power. | Suitable for cost-sensitive applications where 12-bit ENOB suffices (e.g., basic audio analyzers). | Choose for BOM cost reduction where 14-bit precision is not required; retains PCB layout compatibility. |
Compared with AD9248BCPZ-40, the AD9248BCPZ-20 trades sampling speed and power for improved SNR stability at lower frequencies; compared with AD9238BCPZ-20, it adds 2 bits of resolution and 3 dB SNR at the cost of +55 mW, making it optimal for mid-tier medical and communications test gear.
Availability
AD9248BCPZ-20 is available at Aetrix Electronics and suitable for ultrasound beamforming, IF sampling receivers, and battery-powered scopemeters requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for AD9248BCPZ-20 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The AD9248 product line delivers dual-channel, high-speed ADCs optimized for communications infrastructure, medical imaging, and portable test equipment - emphasizing low power, high SNR, and flexible digital interfacing for space-constrained designs.
FAQ
What is the guaranteed operating temperature range for the AD9248BCPZ-20?
The AD9248BCPZ-20 is specified over the industrial temperature range of −40°C to +85°C. All DC and AC specifications - including INL, SNR, and crosstalk - are guaranteed across this range. Thermal performance relies on proper soldering of the exposed pad to AGND, which lowers junction-to-ambient thermal resistance to 26.4°C/W on a 4-layer board.
Does the AD9248BCPZ-20 support single-ended analog inputs?
Yes, the AD9248BCPZ-20 supports single-ended inputs via its differential SHA architecture: VIN+_A and VIN−_A can be driven with complementary signals or with one pin AC-coupled and the other biased to common-mode voltage (typically AVDD/2). Input common-mode range is 0.3 V to AVDD − 0.3 V, and the 500 MHz bandwidth remains usable in single-ended mode.
How does the clock duty cycle stabilizer (DCS) function in the AD9248BCPZ-20?
The DCS in the AD9248BCPZ-20 dynamically adjusts internal clock timing to compensate for duty cycles ranging from 30% to 70%. Enabled via the DCS pin, it maintains consistent aperture uncertainty (<0.5 ps rms) and preserves SNR/SFDR performance without requiring external clock conditioning. This allows use of low-jitter but asymmetric clocks from simple oscillators or microcontroller outputs.
Can the AD9248BCPZ-20 operate with different reference voltages for each channel?
Yes - the SHARED_REF pin selects reference mode: when low, Channels A and B use independent REFT_A/REFB_A and REFT_B/REFB_B pairs, enabling fully isolated analog paths; when high, both channels share VREF and SENSE, improving gain matching (±0.01% typical) at the expense of slightly reduced channel isolation. Reference voltage is internally generated at 1.0 V (±35 mV) or 0.5 V (±2.5 mV).
What is the pipeline latency of the AD9248BCPZ-20, and how does it affect system synchronization?
The AD9248BCPZ-20 has a fixed pipeline latency of 7 clock cycles from CLK_A/CLK_B edge to valid D0–D13 output. This deterministic delay enables precise time-of-flight calculations in ultrasound and phase-coherent sampling in I/Q receivers. Latency is identical for both channels and unaffected by data format, MUX_SELECT, or power-down states - simplifying FPGA-based timing alignment logic.
AD9248BCPZ-20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.25V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9248BCPZ-20 FAQ
1.How can I place an order for AD9248BCPZ-20 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9248BCPZ-20 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 AD9248BCPZ-20 reliable?
The price and inventory of AD9248BCPZ-20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9248BCPZ-20 is usually 5 days.
3.What payment methods are accepted for AD9248BCPZ-20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9248BCPZ-20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9248BCPZ-20?
AD9248BCPZ-20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9248BCPZ-20 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 AD9248BCPZ-20?
For technical support, including AD9248BCPZ-20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9248BCPZ-20 requirements.
6.How does Aetrix verify that AD9248BCPZ-20 is sourced from the original manufacturer or authorized distributors?
All AD9248BCPZ-20 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 AD9248BCPZ-20 meets industry standards.
7.What is the process for return or replacement of AD9248BCPZ-20?
All AD9248BCPZ-20 units undergo pre-shipment inspection (PSI). If there is an issue with AD9248BCPZ-20, 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 AD9248BCPZ-20 part is unused and in its original packaging.
Return procedure for AD9248BCPZ-20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD9248BCPZ-20 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…
