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Analog Devices Inc. LTC6563IUDDM#PBF
- Part No.:
- LTC6563IUDDM#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Special Purpose Amplifiers
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
LTC6563IUDDM#PBF.pdf
- Description:
- QUAD CHANNEL TRANSIMPEDANCE AMPL
- Quantity:
- Payment:
- Shipping:
Inventory:1,483
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Product details
Overview
LTC6563IUDDM#PBF from Analog Devices is a four-channel transimpedance amplifier (TIA) optimized for LIDAR receiver front-ends using avalanche photodiodes (APDs) or photodiodes (PDs). It delivers 600MHz –3dB bandwidth with 0.5pF input capacitance, selectable transimpedance gains of 5.55/11.1/16.7/22.2kΩ, and 90µA linear input current range - enabling high-speed, low-noise optical signal conversion in automotive and industrial LIDAR systems.
For engineers reviewing the LTC6563IUDDM#PBF datasheet, LTC6563IUDDM#PBF pinout, LTC6563IUDDM#PBF application, or LTC6563IUDDM#PBF equivalent, key selection criteria include its integrated 4:1 output MUX, fast 10ns channel switching, differential 2VP-P swing into 100Ω, 2.5ns overload recovery, and AEC-Q100 Grade 1 qualification for automotive LIDAR deployment.
Technical Context
The LTC6563IUDDM#PBF integrates four independent TIAs with programmable gain via ADJ0/ADJ1 pins, each supporting DC-coupled APD/PD inputs and featuring internal offset cancellation (OFFSET pin), common-mode control (CM pin), and tilt adjustment (TILT pin) for dynamic output shaping. Its architecture enables precise current-to-voltage conversion while maintaining linearity across –40°C to +85°C.
Channel selection is managed by CHSEL0/CHSEL1, with OMUX controlling internal 4:1 multiplexing; PWRMD enables shutdown mode (13mW total power). The device drives differential ADC inputs directly via OUT/OUT outputs with built-in 100Ω termination (TERM/TERM), eliminating external components for 100Ω differential loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3dB Bandwidth | 600MHz at 0.5pF input capacitance - supports sub-nanosecond pulse detection in time-of-flight LIDAR. |
| Transimpedance Gain | Selectable 5.55/11.1/16.7/22.2kΩ - matches varying APD responsivity and dynamic range requirements. |
| Input Current Noise Density | 1.8pA/√Hz @ 100MHz, 3.7pA/√Hz @ 600MHz (0.5pF) - enables high SNR in low-light LIDAR operation. |
| Differential Output Swing | Up to 2VP-P into 100Ω load - directly interfaces with high-speed ADCs like AD9094 without external amplification. |
| Channel Switching Time | 10ns between any channels - critical for multi-zone scanning LIDAR with rapid beam steering. |
| Overload Recovery | 2.5ns recovery from >1A transient input - maintains timing integrity after strong ambient light or sun exposure events. |
| Supply Voltage | 3.15V to 3.45V (3.3V nominal) on both VCCI and VCCO rails - ensures stable operation under automotive voltage fluctuations. |
| Operating Temperature | –40°C to +85°C - qualified per AEC-Q100 Grade 1 for under-hood automotive LIDAR applications. |
Pinout & Package
The LTC6563IUDDM#PBF is housed in a 3mm × 5mm, 24-pin QFN package with exposed thermal pad (Pin 25 = GND) and wettable flanks for automated optical inspection (AOI). Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Photodiode input terminals | Four independent, DC-coupled TIA inputs accepting APD/PD anode/cathode configurations. |
| OUT / OUT | Differential output pair | High-speed complementary outputs delivering 2VP-P swing into 100Ω; routed to ADC inputs. |
| TERM / TERM | Internal termination connection points | Internally tied to 100Ω differential termination; must be connected to OUT/OUT for proper impedance matching. |
| CHSEL0 / CHSEL1 | Channel select control inputs | Binary-encoded selection of active TIA channel (00–11); enable sequential or random access scanning. |
| OMUX | Multiplexer enable | Logic-high enables internal 4:1 MUX; logic-low disables MUX and outputs all four channels simultaneously. |
| PWRMD | Power-down control | Logic-low places device in shutdown mode (6.3mA total supply current), reducing system power during idle periods. |
| CM | Common-mode voltage control | Analog input setting differential output common-mode level (0.38V–2.3V range) for ADC input alignment. |
| OFFSET | Input current cancellation | Adjusts input offset current up to ±240µA to null dark current or bias drift in APD arrays. |
| TILT | Differential output slope control | Programs output gain slope (–1.25 to –0.7 V/V) to compensate for photodiode nonlinearity or signal path loss. |
| HI | Output clamping reference | Sets upper clamp voltage for differential output; must exceed CM pin voltage by ≥0.2V to avoid clipping. |
| VCCI / VCCO | Independent supply rails | VCCI powers input stage; VCCO powers output stage - enables PSRR optimization and noise isolation. |
| GND (Pins 1, 3, 5, 7, 11, 13, 15, 25) | Ground connections | Eight dedicated GND pins including exposed pad (Pin 25) - minimize ground bounce and improve thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4:1 output MUX | Reduces PCB routing complexity and ADC channel count by multiplexing four TIAs onto one differential pair. |
| External channel expansion support | Enables up to 64-channel systems using multiple LTC6563IUDDM#PBF devices - ideal for high-resolution solid-state LIDAR. |
| Programmable transimpedance gain | Four discrete RT values (5.55–22.2kΩ) selected via ADJ0/ADJ1 pins - eliminates external feedback resistors and improves layout flexibility. |
| Fast overload recovery (2.5ns) | Preserves timing accuracy after saturation events (e.g., sunlight glare), avoiding dead-time penalties in pulsed LIDAR. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C junction temperature - meets stringent reliability requirements for ADAS sensors. |
| Wettable flank QFN package | Supports automated optical inspection (AOI) of solder joints - critical for high-yield manufacturing of safety-critical LIDAR modules. |
Applications
| Automotive LIDAR Receiver | Industrial LIDAR Receiver |
|---|---|
|
Use Scenario: Front-facing long-range LIDAR in autonomous vehicles detecting objects beyond 200m under variable lighting. IC Role / Device Role / Timing Role: Four-channel TIA converting APD photocurrents into amplified, multiplexed differential voltage signals synchronized to laser pulse timing. Use Value: 600MHz bandwidth and 2.5ns overload recovery ensure accurate time-of-flight measurement even during solar interference events. |
Use Scenario: Warehouse robotic navigation using short-range flash LIDAR for obstacle avoidance and SLAM mapping. IC Role / Device Role / Timing Role: High-linearity TIA front-end digitizing multi-pixel photodiode array outputs with minimal distortion across 0–90µA input range. Use Value: Selectable 5.55–22.2kΩ gain allows optimal SNR tuning for varying reflectivity surfaces (e.g., black plastic vs. white wall). |
| Multi-Zone Scanning LIDAR | High-Speed Optical Time-Domain Reflectometry |
|
Use Scenario: Rotating or MEMS-based LIDAR scanning 32+ angular zones per revolution with real-time channel switching. IC Role / Device Role / Timing Role: Channel-selectable TIA providing 10ns inter-channel transition for seamless zone-to-zone signal acquisition. Use Value: Internal 4:1 MUX and external daisy-chain capability reduce system-level component count and power consumption by >40% vs. discrete solutions. |
Use Scenario: Fiber-optic fault location in telecom infrastructure requiring picosecond-level pulse response fidelity. IC Role / Device Role / Timing Role: Ultra-low-noise TIA capturing weak backscattered optical pulses with 1.8pA/√Hz input noise density at 100MHz. Use Value: 65nARMS integrated input-referred noise over 600MHz bandwidth enables detection of sub-millimeter fiber discontinuities. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transimpedance amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX40660ATB/VY+ | Single-channel 650MHz TIA with 1.2pA/√Hz noise; no integrated MUX or channel selection logic. | Requires external multiplexing for multi-channel systems; better suited for compact single-zone receivers. | Choose when board space is constrained and only one APD channel is needed per IC. |
| ADN3010-11 | 11.3Gbps limiting amplifier with integrated TIA; fixed 50Ω input impedance and no programmable gain. | Targeted at telecom datacom (not LIDAR); lacks overload recovery spec and automotive qualification. | Consider only for high-speed serial optical links - not suitable for pulsed LIDAR waveform capture. |
Compared with MAX40660ATB/VY+ and ADN3010-11, the LTC6563IUDDM#PBF uniquely combines quad-channel integration, programmable gain, internal MUX, AEC-Q100 qualification, and LIDAR-optimized overload recovery - making it the only drop-in solution for scalable, automotive-grade multi-zone LIDAR front-ends.
Availability
LTC6563IUDDM#PBF is available at Aetrix Electronics and suitable for automotive LIDAR receiver, industrial LIDAR receiver, and multi-zone scanning LIDAR applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LTC6563IUDDM#PBF 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 precision instrumentation, industrial automation, and automotive safety markets.
The LTC6563IUDDM#PBF belongs to Analog Devices' LIDAR signal chain portfolio, designed specifically to address the low-noise, high-bandwidth, and automotive reliability demands of next-generation optical sensing systems.
FAQ
What is the maximum input capacitance supported by the LTC6563IUDDM#PBF while maintaining 600MHz bandwidth?
The LTC6563IUDDM#PBF achieves its full 600MHz –3dB bandwidth with a total input capacitance (CIN,TOT) of 0.5pF, as specified in the AC Electrical Characteristics table. Performance degrades with higher capacitance: at 2pF, bandwidth drops to ~450MHz; at 4pF, it falls to ~300MHz. For optimal LIDAR pulse fidelity, APD selection and PCB layout must keep total node capacitance ≤0.5pF.
How does the OFFSET pin function in the LTC6563IUDDM#PBF, and what is its cancellation range?
The OFFSET pin on the LTC6563IUDDM#PBF provides programmable input current cancellation to null APD dark current or sensor bias drift. Applying 0V to 3.3V generates a cancellation current from 0µA to 240µA (typical), with transconductance of –110µA/V (typical). This feature enables DC stabilization of the TIA input without external op-amps or complex calibration circuits.
Can the LTC6563IUDDM#PBF drive a 50Ω single-ended ADC input, or is it strictly for 100Ω differential loads?
The LTC6563IUDDM#PBF is optimized for 100Ω differential loads via its OUT/OUT outputs and internal TERM/TERM termination. While it can drive 50Ω single-ended loads (achieving 2.4VP-P swing with center-grounded 75Ω per side), doing so requires external termination and forfeits common-mode rejection. For best noise immunity and timing accuracy, use the differential 100Ω configuration as intended.
What is the purpose of the HI pin on the LTC6563IUDDM#PBF, and how should it be configured?
The HI pin on the LTC6563IUDDM#PBF sets the upper clamp voltage for the differential output stage. It must be biased ≥0.2V above the CM pin voltage to prevent clipping. Default HI voltage is 1.8V; adjusting it allows fine-tuning of output headroom - especially useful when interfacing with ADCs having specific input voltage limits or when compensating for PCB trace losses.
Is the LTC6563IUDDM#PBF pin-compatible with other variants in the LTC656x family, such as the LTC6560 or LTC6561?
No, the LTC6563IUDDM#PBF is not pin-compatible with the LTC6560 or LTC6561. It uses a unique 24-pin QFN (UDDM) package with distinct pin assignments for OMUX, TILT, and OFFSET functions absent in earlier variants. Migration requires PCB redesign; however, functional overlap exists in transimpedance gain range and bandwidth, enabling schematic-level reuse with layout adaptation.
LTC6563IUDDM#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Transimpedance Amplifier
- Applications:
- Receiver
- Mounting Type:
- Surface Mount, Wettable Flank
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-QFN (3x5)
LTC6563IUDDM#PBF FAQ
1.How can I place an order for LTC6563IUDDM#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC6563IUDDM#PBF 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 LTC6563IUDDM#PBF reliable?
The price and inventory of LTC6563IUDDM#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC6563IUDDM#PBF is usually 5 days.
3.What payment methods are accepted for LTC6563IUDDM#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC6563IUDDM#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC6563IUDDM#PBF?
LTC6563IUDDM#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC6563IUDDM#PBF 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 LTC6563IUDDM#PBF?
For technical support, including LTC6563IUDDM#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC6563IUDDM#PBF requirements.
6.How does Aetrix verify that LTC6563IUDDM#PBF is sourced from the original manufacturer or authorized distributors?
All LTC6563IUDDM#PBF 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 LTC6563IUDDM#PBF meets industry standards.
7.What is the process for return or replacement of LTC6563IUDDM#PBF?
All LTC6563IUDDM#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC6563IUDDM#PBF, 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 LTC6563IUDDM#PBF part is unused and in its original packaging.
Return procedure for LTC6563IUDDM#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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