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Texas Instruments ADS5520IPAP
- Part No.:
- ADS5520IPAP
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-PowerTQFP
- Datasheet:
-
ADS5520IPAP.pdf
- Description:
- IC ADC 12BIT PIPELINED 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,321
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Product details
Overview
ADS5520IPAP from Texas Instruments is a 12-bit, 125 MSPS analog-to-digital converter (ADC) with integrated sample-and-hold and internal voltage reference. It delivers 69.7 dBFS SNR at 100 MHz input, 82 dBc SFDR, and operates on a single 3.3-V supply with 578 mW analog power dissipation - optimized for high-speed communication receivers and radar front-ends.
For engineers reviewing the ADS5520IPAP datasheet, ADS5520IPAP pinout, ADS5520IPAP application, or ADS5520IPAP equivalent, key selection criteria include its 125 MSPS sampling rate, differential 2.3-VPP input range, TQFP-64 PowerPAD™ package, serial programming interface, and industrial temperature range (–40°C to 85°C).
Technical Context
The ADS5520IPAP employs a 12-bit pipeline ADC core with high-bandwidth linear sample-and-hold stage and internal reference generation (VREFP = 2.1 V, VREFM = 0.95 V). Its DLL-enabled clocking supports 60–125 MSPS operation with <300 fs aperture jitter and 17.5-clock-cycle latency.
Digital output is parallel CMOS-compatible (D0–D11), configurable via DFS pin for straight binary or 2's complement format and CLKOUT polarity. Serial programming uses a 3-wire interface (SEN/SCLK/SDATA) with 16-bit register addressing for DLL control, test modes, and power-down configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution & Speed | 12-bit resolution, 125 MSPS maximum sampling rate - enables digitization of wideband IF signals up to ~750 MHz analog input bandwidth. |
| Dynamic Performance | 69.7 dBFS SNR and 82 dBc SFDR at 100 MHz fIN - supports high-fidelity signal capture in base station and radar applications. |
| Analog Input | 2.3-VPP differential input range with 1.55-V common-mode voltage - simplifies interfacing with TI-recommended op amps (e.g., THS4509, OPA695). |
| Power Supply | 3.3-V single-supply operation (AVDD = DRVDD = 3.3 V); 578 mW analog power - reduces system-level thermal load and eliminates dual-supply design complexity. |
| Reference | Internal reference (VREFP = 2.1 V, VREFM = 0.95 V, ±0.9% error) - removes need for external reference IC and associated layout filtering. |
| Timing Accuracy | 300 fs aperture jitter and 1 ns aperture delay - preserves signal integrity for demanding undersampling and coherent receiver architectures. |
| Digital Interface | Parallel 12-bit CMOS outputs (D0–D11), programmable data format (straight binary/2's complement), and CLKOUT sync - ensures direct compatibility with FPGA or ASIC logic without level-shifting. |
Pinout & Package
The ADS5520IPAP is housed in a 64-pin HTQFP PowerPAD™ package (PAP designation) with exposed thermal pad soldered to AGND. Package dimensions are JEDEC-standard 10 mm × 10 mm, θJA = 21.47°C/W with 4-layer PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INM (Pins 19, 20) | Differential analog input | Accepts 2.3-VPP balanced signal; requires matched trace routing and termination to 50 Ω for optimal SFDR. |
| CLKP / CLKM (Pins 10, 11) | Differential clock input | Supports 1–3 VPP sine wave; DLL must be enabled for >80 MSPS operation per register setting. |
| D0–D11 (Pins 33, 34, 46–47, 51–56, 60–63) | Parallel digital output | CMOS-compatible 12-bit data bus; timing referenced to CLKOUT rising edge (configurable via DFS pin). |
| REFP / REFM / IREF (Pins 29–31) | Internal reference interface | REFP/REFM require 1-µF cap + 1-Ω resistor to AGND; IREF sets bias current with 56-kΩ to AGND - no capacitors allowed. |
| OE / DFS / SEN / SCLK / SDATA (Pins 41, 40, 4, 2, 3) | Control and serial interface | Active-high OE enables outputs; DFS selects data format/clock polarity; serial interface uses falling-edge latching with 16-bit address/data framing. |
| RESET (Pin 35) | Asynchronous reset | Active-high signal with internal 200-kΩ pull-up to AVDD; minimum 2 µs pulse width required for full initialization. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated sample-and-hold + internal reference | Eliminates external S&H IC and reference circuitry, reducing BOM count and board area by ≥3 components. |
| Serial programming interface | Enables runtime configuration of DLL, test modes, and power-down without requiring external PROM or microcontroller GPIO overhead. |
| TQFP-64 PowerPAD™ package | Thermal pad connected to AGND provides low-θJC (2.99°C/W), enabling stable 125 MSPS operation without heatsink in industrial ambient. |
| Configurable output format & clock polarity | DFS pin selects straight binary/2's complement and CLKOUT rising/falling edge alignment - simplifies timing closure with diverse logic families. |
| Low-latency pipeline architecture | Fixed 17.5-clock-cycle latency enables deterministic real-time processing in closed-loop systems like digital predistortion. |
Applications
| Communication Receivers | Base Station Infrastructure |
|---|---|
Use Scenario: Digitizing 70–100 MHz IF signals in LTE/FDD-TDD macrocell receivers with 20 MHz channel bandwidth. IC Role / Device Role / Timing Role: High-speed ADC front-end capturing complex baseband IQ data with minimal quantization noise and harmonic distortion. Use Value: 69.7 dBFS SNR and 82 dBc SFDR ensure >14-bit ENOB-equivalent dynamic range for accurate demodulation of 256-QAM signals. | Use Scenario: Wideband digital downconversion in multi-carrier GSM/UMTS remote radio heads with 120 MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Primary digitizer feeding FPGA-based DDC chains; CLKOUT synchronizes downstream logic timing. Use Value: 125 MSPS sampling and 750 MHz analog input bandwidth support Nyquist-rate sampling of 60 MHz RF bands without image rejection filters. |
| Radar Systems | Test & Measurement Instrumentation |
Use Scenario: Pulse-Doppler radar front-end acquiring 100+ MHz chirp returns in airborne SAR platforms. IC Role / Device Role / Timing Role: High-fidelity digitizer for time-of-flight and Doppler shift analysis; low aperture jitter preserves phase coherence across pulses. Use Value: 300 fs aperture jitter and 17.5-cycle deterministic latency enable sub-centimeter range resolution and precise velocity estimation. | Use Scenario: Real-time spectrum analyzer input stage capturing transient RF events up to 220 MHz with >65 dBFS SINAD. IC Role / Device Role / Timing Role: Core ADC in portable analyzers; serial interface allows calibration coefficient updates during field service. Use Value: Internal reference stability (±0.9% error) and DC PSRR of 0.25 mV/V minimize gain drift during battery-powered operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS5560IPAP | 16-bit, 40 MSPS; higher resolution but lower speed; 1.25 W power vs. 578 mW | Better suited for precision instrumentation than wideband comms; lacks DLL and serial interface | Select when ENOB >14 bits required at ≤40 MSPS, not for 125 MSPS IF sampling. |
| AD9233BCPZ-125 | 12-bit, 125 MSPS; 70.2 dBFS SNR (typ), 84 dBc SFDR (typ); 3.3-V/1.8-V dual supply | Requires separate 1.8-V digital supply; no internal reference - needs external REF195 or similar | Choose if lower jitter (150 fs typ) and higher SFDR are critical, and dual-supply design is acceptable. |
Compared with ADS5560IPAP and AD9233BCPZ-125, the ADS5520IPAP uniquely balances 125 MSPS speed, integrated reference, single 3.3-V supply, and serial configurability - making it optimal for space-constrained, high-channel-count wireless infrastructure where power and BOM simplicity are prioritized over ultimate resolution or jitter.
Availability
ADS5520IPAP is available at Aetrix Electronics and suitable for communication receivers, radar front-ends, and test equipment requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADS5520IPAP 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-performance data converters for industrial, automotive, and communications markets.
The ADS5520IPAP belongs to TI's high-speed ADC portfolio designed specifically for wideband, low-power digitization in wireless infrastructure, defense radar, and portable instrumentation - emphasizing integration, thermal efficiency, and ease of system-level timing alignment.
FAQ
What is the maximum sampling rate supported by the ADS5520IPAP?
The ADS5520IPAP supports a maximum sampling rate of 125 MSPS when the internal DLL is enabled. At this rate, it achieves 69.7 dBFS SNR and 82 dBc SFDR at 100 MHz input frequency. The device also supports lower rates down to 2 MSPS with DLL disabled, maintaining specified AC performance across the full range. This makes the ADS5520IPAP suitable for both wideband IF sampling and lower-speed high-fidelity applications.
Does the ADS5520IPAP require an external voltage reference?
No, the ADS5520IPAP includes a fully integrated voltage reference with VREFP = 2.1 V and VREFM = 0.95 V, delivering ±0.9% reference error over temperature. External decoupling (1-µF capacitor + 1-Ω resistor to AGND) is required on REFP/REFM pins, and IREF must be biased with a 56-kΩ resistor to AGND. No external reference IC is needed, simplifying layout and reducing system cost.
How is the data output format configured on the ADS5520IPAP?
The ADS5520IPAP data output format (straight binary or 2's complement) and CLKOUT polarity are selected via the DFS pin voltage level, as defined in Table 4 of the datasheet. A logic-high DFS voltage selects straight binary with CLKOUT rising-edge valid; logic-low selects 2's complement with falling-edge valid. This hardware-selectable configuration avoids firmware dependencies and ensures deterministic timing behavior at power-up.
What is the thermal performance of the ADS5520IPAP in its TQFP-64 PowerPAD™ package?
The ADS5520IPAP in the HTQFP-64 PowerPAD™ (PAP) package has θJA = 21.47°C/W and θJC = 2.99°C/W when mounted on a JEDEC-standard 4-layer PCB with 2 oz. copper and thermal pad soldered directly to AGND. At 578 mW analog power dissipation and 85°C ambient, junction temperature remains within safe limits (≤105°C), enabling reliable 125 MSPS operation without forced air or heatsinking in industrial environments.
Can the ADS5520IPAP be configured for power-down mode, and how is it activated?
Yes, the ADS5520IPAP supports software-controlled power-down mode via its serial programming interface. Writing '10' to the PDN register (address 0xF) places the device in low-current standby, reducing power consumption to ≤250 mW while clocks remain active. Wake-up requires 1000 clock cycles before valid data appears. This feature enables dynamic power management in battery-operated or burst-mode systems using the ADS5520IPAP.
ADS5520IPAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 125M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 3V ~ 3.6V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-HTQFP (10x10)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADS5520IPAP FAQ
1.How can I place an order for ADS5520IPAP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADS5520IPAP 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 ADS5520IPAP reliable?
The price and inventory of ADS5520IPAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADS5520IPAP is usually 5 days.
3.What payment methods are accepted for ADS5520IPAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADS5520IPAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADS5520IPAP?
ADS5520IPAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADS5520IPAP 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 ADS5520IPAP?
For technical support, including ADS5520IPAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADS5520IPAP requirements.
6.How does Aetrix verify that ADS5520IPAP is sourced from the original manufacturer or authorized distributors?
All ADS5520IPAP 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 ADS5520IPAP meets industry standards.
7.What is the process for return or replacement of ADS5520IPAP?
All ADS5520IPAP units undergo pre-shipment inspection (PSI). If there is an issue with ADS5520IPAP, 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 ADS5520IPAP part is unused and in its original packaging.
Return procedure for ADS5520IPAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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