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Analog Devices Inc. AD9640ABCPZ-105
- Part No.:
- AD9640ABCPZ-105
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9640ABCPZ-105.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,872
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Product details
Overview
AD9640ABCPZ-105 from Analog Devices is a dual-channel, 14-bit, 105 MSPS analog-to-digital converter optimized for IF sampling in communications receivers. It operates from a single 1.8 V analog supply, supports differential analog inputs up to 650 MHz bandwidth, delivers 71.9 dBc SNR at 70 MHz input, and features integrated fast detect and signal monitor blocks for AGC implementation in LTE and WCDMA baseband systems.
For engineers reviewing the AD9640ABCPZ-105 datasheet, AD9640ABCPZ-105 pinout, AD9640ABCPZ-105 application, or AD9640ABCPZ-105 equivalent, key selection considerations include its 105 MSPS conversion rate, 95 dB channel isolation, LVDS/CMOS output flexibility, internal voltage reference, and support for integer clock division (1–8) with duty cycle stabilization.
Technical Context
The AD9640ABCPZ-105 implements two independent pipelined ADC cores with integrated error correction logic, each featuring wide-bandwidth differential sample-and-hold amplifiers and programmable input ranges (1–2 Vp-p). Its architecture supports IF sampling up to 450 MHz while maintaining 71.9 dBc SNR and 85 dBc SFDR at 70 MHz.
It integrates three real-time monitoring functions: fast detect (4-bit magnitude, <1-cycle latency), programmable threshold detection, and composite signal monitor with dedicated SPORT output. Control is handled via a 3-wire SPI interface supporting register configuration of data format, DCS enable, power modes, and DC correction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - Enables high dynamic range digitization for wideband communication signals with >80 dB spurious-free resolution. |
| Sample Rate | 105 MSPS - Supports Nyquist-sampled IF signals up to 52.5 MHz or undersampled RF carriers up to 450 MHz. |
| SNR @ 70 MHz | 71.9 dBc (72.6 dBFS) - Ensures clean digitization of multi-carrier LTE/WCDMA signals without significant quantization degradation. |
| Channel Isolation | 95 dB - Prevents crosstalk between I/Q paths in direct-conversion receivers, preserving image rejection performance. |
| Analog Input BW | 650 MHz - Allows wideband front-end design with minimal external filtering before the ADC input stage. |
| Power @ 105 MSPS | 657 mW (DRVDD = 3.3 V CMOS) - Balances performance and thermal load in compact, air-cooled base station modules. |
| Aperture Jitter | 0.1 ps rms - Limits sampling uncertainty to <0.01% of 105 MSPS clock period, critical for high-IF sampling accuracy. |
Pinout & Package
The AD9640ABCPZ-105 is housed in a 64-lead, 9 mm × 9 mm LFCSP package with exposed paddle thermally and electrically connected to AGND. Pin assignments are defined per Analog Devices' Rev. C datasheet Figure 16 (Pin Configurations and Function Descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+A / VIN−A VIN+B / VIN−B |
Differential analog inputs (Ch A & Ch B) | Accept 1–2 Vp-p differential signals; 650 MHz bandwidth enables direct IF sampling without external amplification. |
| CLK+ / CLK− | Differential clock input | Supports CMOS/LVDS/LVPECL; internal duty cycle stabilizer compensates for clock skew, preserving aperture accuracy. |
| D0A–D13A / D0B–D13B | 14-bit parallel digital outputs (Ch A & Ch B) | Configurable for 1.8–3.3 V CMOS or 1.8 V LVDS; low-voltage operation reduces EMI and simplifies FPGA interface. |
| FD0A–FD3A / FD0B–FD3B | Fast detect magnitude outputs | 4-bit instantaneous signal level per channel; <1-cycle latency enables real-time AGC loop response in receiver chains. |
| SYNC | Channel synchronization input | Aligns sampling edges across multiple AD9640 devices for coherent MIMO or diversity antenna systems. |
| SDIO / SCLK / CSB | 3-wire SPI interface | Configures registers for data format (offset binary/twos complement), DCS, power-down, and signal monitor parameters. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual ADC core | Two synchronized 14-bit pipelines eliminate inter-channel timing mismatch in I/Q demodulation systems. |
| Programmable clock divider (1–8) | Allows use of lower-frequency, low-jitter master clocks while achieving precise 105 MSPS sampling-reducing system clocking complexity. |
| Signal monitor with SPORT output | Dedicated serial port delivers RMS/peak/threshold-crossing metrics independently of main data path-enabling concurrent AGC and signal analysis. |
| Internal 1.0 V reference | Removes need for external precision reference IC and associated layout-sensitive routing, improving board-level SNR consistency. |
| Flexible power-down modes | Reduces power to 2.5 mW in full shutdown or 68 mW in standby-critical for burst-mode TD-SCDMA or TDD-LTE receivers. |
Applications
| LTE Baseband Receiver | WCDMA Diversity Front-End |
|---|---|
|
Use Scenario: Digitizing dual-path IF signals (e.g., 185–195 MHz) from quadrature downconverters in macrocell BTS. IC Role / Device Role / Timing Role: Dual-channel ADC providing synchronized I/Q sampling with 95 dB isolation to preserve EVM and ACLR performance. Use Value: 71.9 dBc SNR at 70 MHz ensures <0.8% EVM for 64-QAM LTE signals; fast detect enables sub-microsecond gain adjustment during uplink bursts. |
Use Scenario: Simultaneous sampling of main and diversity antenna paths in WCDMA Node B for RAKE receiver combining. IC Role / Device Role / Timing Role: Channel-synchronized dual ADC delivering time-aligned samples to DSP for maximal-ratio combining. Use Value: SYNC input enables <100 ps inter-channel skew; 105 MSPS rate supports 5 MHz WCDMA carrier bandwidth with oversampling margin. |
| Software-Defined Radio (SDR) Transceiver | WiMAX Base Station IF Chain |
|
Use Scenario: Reconfigurable IF digitization in military or public safety SDR platforms supporting multiple waveforms (e.g., P25, TETRA, LTE). IC Role / Device Role / Timing Role: High-flexibility ADC with SPI-configurable data format, clock division, and power modes for waveform-agnostic operation. Use Value: Integer clock divider and LVDS/CMOS output options simplify FPGA interface across varying clock domains; BIST supports field calibration. |
Use Scenario: Digitizing 3.5 GHz WiMAX IF signals (e.g., 120–130 MHz) in fixed wireless access base stations. IC Role / Device Role / Timing Role: High-SFDR ADC enabling clean capture of adjacent-channel interference in dense urban deployments. Use Value: 85 dBc SFDR at 70 MHz suppresses second harmonics below −70 dBm; 650 MHz analog input BW accommodates wide IF filters. |
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 |
|---|---|---|---|
| AD9627BCPZ-105 | 12-bit resolution, same 105 MSPS rate, identical 64-lead LFCSP package and pinout. | Lower dynamic range (69.5 dBc SNR @ 70 MHz); suitable where cost or FPGA resource constraints outweigh ENOB requirements. | Select AD9627BCPZ-105 when system SNR budget allows ≤12-bit effective resolution and PCB layout reuse is prioritized. |
| AD9680BCPZ-105 | 14-bit, 105 MSPS, but with JESD204B serial output (not parallel CMOS/LVDS); higher power (1.2 W). | Designed for high-density FPGAs with JESD204B lanes; eliminates 28 parallel traces but requires serializer/deserializer support. | Choose AD9680BCPZ-105 only if JESD204B infrastructure exists and trace count reduction justifies added complexity and power. |
Compared with AD9627BCPZ-105, the AD9640ABCPZ-105 delivers +2.4 dB SNR and +1 LSB ENOB at 70 MHz, enabling higher-order modulation support; versus AD9680BCPZ-105, it offers simpler FPGA interfacing and 44% lower power but requires more PCB routing resources.
Availability
AD9640ABCPZ-105 is available at Aetrix Electronics and suitable for LTE base station development, WCDMA diversity receiver production, and software-defined radio prototyping requiring stable component supply and long-term industrial temperature support (−40°C to +85°C).
Supply support for AD9640ABCPZ-105 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, serving communications, industrial, and instrumentation markets since 1965.
The AD9640 product line delivers dual-channel, high-speed ADCs with integrated AGC assist features specifically for cost-sensitive, space-constrained wireless infrastructure equipment operating in licensed spectrum bands.
FAQ
What is the maximum analog input frequency supported by the AD9640ABCPZ-105?
The AD9640ABCPZ-105 supports analog input frequencies up to 450 MHz using undersampling techniques, enabled by its 650 MHz analog input bandwidth and 105 MSPS sampling rate. Its differential input structure maintains 71.9 dBc SNR performance up to 70 MHz, and usable ENOB remains above 11.5 bits even at 200 MHz input-making it suitable for direct IF sampling in LTE and WiMAX receivers.
Does the AD9640ABCPZ-105 require an external voltage reference?
No, the AD9640ABCPZ-105 includes an internal 1.0 V voltage reference with ±15 mV output error over temperature, eliminating the need for external reference components. This integrated reference is factory-trimmed and supports both 1 V and 2 Vp-p input spans. External reference override is possible via the VREF pin, but default operation uses the internal source for simplified layout and improved system SNR consistency.
How does the fast detect feature of the AD9640ABCPZ-105 reduce AGC latency?
The AD9640ABCPZ-105's fast detect block outputs four magnitude bits per channel with <1-cycle latency-approximately 9.5 ns at 105 MSPS-enabling immediate overrange detection without waiting for full 14-bit data processing. This allows receiver AGC loops to respond within microseconds, preventing clipping during burst transmissions in TD-SCDMA or TDD-LTE systems. The AD9640ABCPZ-105 also provides programmable upper/lower thresholds for precise gain control triggering.
Can the AD9640ABCPZ-105 operate with a 1.8 V LVDS output interface?
Yes, the AD9640ABCPZ-105 supports 1.8 V LVDS digital outputs on both channels, configured via the SPI interface. In LVDS mode, it delivers differential output voltages of 250–450 mV (ANSI-compliant) with 1.15–1.35 V common-mode offset, enabling low-noise, low-power transmission over controlled-impedance traces to compatible FPGAs or ASICs. Power consumption in LVDS mode is 54–55 mA on DRVDD, lower than 3.3 V CMOS operation.
Is the AD9640ABCPZ-105 pin-compatible with other members of the AD9640 family?
Yes, all AD9640 variants-including AD9640ABCPZ-80, AD9640ABCPZ-105, AD9640ABCPZ-125, and AD9640ABCPZ-150-share identical 64-lead LFCSP packaging and pinout. This allows hardware reuse across sampling rate grades. However, AC performance (e.g., SNR, SFDR) and power consumption scale with rate: the AD9640ABCPZ-105 draws 657 mW at 105 MSPS, versus 492 mW for the -80 variant, requiring appropriate thermal design for each speed grade.
AD9640ABCPZ-105 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):
- 105M
- 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:
- 2
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9640ABCPZ-105 FAQ
1.How can I place an order for AD9640ABCPZ-105 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9640ABCPZ-105 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 AD9640ABCPZ-105 reliable?
The price and inventory of AD9640ABCPZ-105 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9640ABCPZ-105 is usually 5 days.
3.What payment methods are accepted for AD9640ABCPZ-105?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9640ABCPZ-105 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9640ABCPZ-105?
AD9640ABCPZ-105 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9640ABCPZ-105 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 AD9640ABCPZ-105?
For technical support, including AD9640ABCPZ-105 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9640ABCPZ-105 requirements.
6.How does Aetrix verify that AD9640ABCPZ-105 is sourced from the original manufacturer or authorized distributors?
All AD9640ABCPZ-105 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 AD9640ABCPZ-105 meets industry standards.
7.What is the process for return or replacement of AD9640ABCPZ-105?
All AD9640ABCPZ-105 units undergo pre-shipment inspection (PSI). If there is an issue with AD9640ABCPZ-105, 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 AD9640ABCPZ-105 part is unused and in its original packaging.
Return procedure for AD9640ABCPZ-105:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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