KAD2710L-10Q68 - 10-Bit 105MSPS ADC, LVDS Output | Renesas
MPN: KAD2710L-10Q68 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.4 | $164.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.05 | $6,025.00 |
| 1,000 | $10.5 | $10,500.00 |
KAD2710L-10Q68 Overview
An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that samples a continuous-time analog input and produces a discrete-time digital code proportional to the input voltage. Pipelined ADCs are a high-speed ADC architecture that uses a cascade of low-resolution stages to achieve conversion rates from a few MSPS to several hundred MSPS, occupying a middle position in the converter hierarchy: Nyquist SAR -> pipelined ADC -> high-speed flash ADC, and they sit within the broader category of data acquisition ICs -> mixed-signal ICs -> integrated circuits. They are widely used in communications infrastructure, instrumentation, and imaging where both speed and resolution are required.
Key features of the KAD2710L-10Q68 include a selectable divide-by-2 input clock divider, an over-range indicator for system-level gain control, LVDS digital outputs that simplify board-level routing and reduce EMI, and a single 1.8 V supply operation. The -10 speed grade limits the maximum sample rate to 105 MSPS, while the same pinout family extends up to 275 MSPS, enabling a single PCB to support multiple sampling-rate options. The 68-QFN exposed-paddle package provides a low thermal resistance path suitable for the device's continuous-conversion duty cycle.
Internally, the KAD2710L uses a multi-stage switched-capacitor pipeline fronted by a track-and-hold, with proprietary FemtoCharge(TM) technology minimizing the size of the sampling capacitors. This reduces the input drive requirements and lowers kT/C noise contribution. An internal bandgap reference and proprietary bias network provide stable operation across the -40 C to +85 C industrial temperature range without external calibration, while a selectable LVDS or LVCMOS output mode allows the same converter to interface with either legacy CMOS or modern LVDS FPGA/ASIC receivers.
Typical applications include cellular base-station IF digitizers, communications test equipment, low-cost portable oscilloscopes, and medical imaging front-ends. The wide LVDS eye-pattern tolerance makes the device well-suited to long PCB trace lengths to an FPGA, while the low power budget simplifies thermal design in dense multi-channel systems. When designing with this ADC, allocate adequate ground and power planes around the package and follow the recommended input drive network: a series resistor and shunt capacitor placed close to the analog input pin optimize SNR at high input frequencies.
This page synthesizes distributor pricing, pin-compatible family alternatives (KAD2710C and KAD2708L families), and practical PCB layout notes that are not always presented together in the manufacturer datasheet.
Drop-in alternatives for KAD2710L-10Q68 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with KAD2710L-10Q68 (same form factor and footprint) — differing in Architecture, Operating Temperature Range, Package, Number of Channels, Resolution.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
KAD2710L-17Q68
✅ Drop-In📋 Reference alternative (not in catalog)
KAD2710L-21Q68
✅ Drop-In📋 Reference alternative (not in catalog)
KAD2710L-27Q68
✅ Drop-In📋 Reference alternative (not in catalog)
KAD2710C-10Q68
✅ Drop-In✓ In Stock
$21.5 / Unit
View Datasheet →KAD2708L-35Q68
✅ Drop-In✓ In Stock
$19.5 / Unit
View Datasheet →KAD2710L-10Q68 Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Sample Rate | 105 MSPS |
| Number of Channels | 1 |
| Architecture | Pipelined |
| Output Interface | LVDS-compatible (selectable LVCMOS) |
| Analog Supply Voltage | 1.8 V |
| SNR (fIN = 138 MHz) | 55.6 dBFS |
| Power Consumption | 275 mW (typical, KAD2710L family maximum grade) |
| Input Clock Divider | Selectable divide-by-2 |
| Over-Range Indicator | Yes |
| Process Technology | FemtoCharge(TM) on standard CMOS |
| Package | 68-pin QFN (10x10 mm) with exposed pad |
| Operating Temperature Range | -40 C to +85 C |
| Family Members | 8-/10-bit, 105/170/210/275 MSPS speed grades |
| RoHS Status | Compliant |
| Pin Compatibility | Pin-compatible with KAD2710L/2708L family |
KAD2710L-10Q68 Pin Configuration
| Pin 1 | AVDD — Analog supply voltage (1.8 V) |
| Pin 2 | AIN+ — Differential analog input positive |
| Pin 3 | AIN- — Differential analog input negative |
| Pin 4 | AVSS — Analog ground |
| Pin 5 | CLKP — Clock input positive |
| Pin 6 | CLKN — Clock input negative |
| Pin 7 | CLK_DIV — Clock divide-by-2 select |
| Pin 8 | DRVDD — Digital output supply |
| Pin 9 | OUT9P — LVDS data output bit 9 positive |
| Pin 10 | OUT9N — LVDS data output bit 9 negative |
| Pin 11 | OUT8P — LVDS data output bit 8 positive |
| Pin 12 | OUT8N — LVDS data output bit 8 negative |
| Pin 13 | OUT7P — LVDS data output bit 7 positive |
| Pin 14 | OUT7N — LVDS data output bit 7 negative |
| Pin 15 | OUT6P — LVDS data output bit 6 positive |
| Pin 16 | OUT6N — LVDS data output bit 6 negative |
| Pin 17 | OUT5P — LVDS data output bit 5 positive |
| Pin 18 | OUT5N — LVDS data output bit 5 negative |
| Pin 19 | OUT4P — LVDS data output bit 4 positive |
| Pin 20 | OUT4N — LVDS data output bit 4 negative |
| Pin 21 | DRVSS — Digital output ground |
| Pin 22 | OUT3P — LVDS data output bit 3 positive |
| Pin 23 | OUT3N — LVDS data output bit 3 negative |
| Pin 24 | OUT2P — LVDS data output bit 2 positive |
| Pin 25 | OUT2N — LVDS data output bit 2 negative |
| Pin 26 | OUT1P — LVDS data output bit 1 positive |
| Pin 27 | OUT1N — LVDS data output bit 1 negative |
| Pin 28 | OUT0P — LVDS data output bit 0 positive (LSB) |
| Pin 29 | OUT0N — LVDS data output bit 0 negative (LSB) |
| Pin 30 | OR+ — Over-range indicator positive |
| Pin 31 | OR- — Over-range indicator negative |
| Pin 32 | DRVDD — Digital output supply |
| Pin 33 | NC — Not connected (per datasheet) |
| Pin 34 | AVDD — Analog supply voltage (1.8 V) |
| Pin 35 | AVSS — Analog ground |
| Pin 36 | REFT — Internal reference top (decoupling) |
| Pin 37 | REFB — Internal reference bottom (decoupling) |
| Pin 38 | AVDD — Analog supply voltage (1.8 V) |
| Pin 39 | AVSS — Analog ground |
| Pin 40 | VCM — Common-mode voltage output |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | AVSS — Analog ground |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | AVDD — Analog supply voltage (1.8 V) |
| Pin 45 | NC — Not connected (per datasheet) |
| Pin 46 | AVSS — Analog ground |
| Pin 47 | AVDD — Analog supply voltage (1.8 V) |
| Pin 48 | NC — Not connected (per datasheet) |
| Pin 49 | AVSS — Analog ground |
| Pin 50 | NC — Not connected (per datasheet) |
| Pin 51 | AVDD — Analog supply voltage (1.8 V) |
| Pin 52 | AVSS — Analog ground |
| Pin 53 | NC — Not connected (per datasheet) |
| Pin 54 | AVDD — Analog supply voltage (1.8 V) |
| Pin 55 | AVSS — Analog ground |
| Pin 56 | NC — Not connected (per datasheet) |
| Pin 57 | AVDD — Analog supply voltage (1.8 V) |
| Pin 58 | AVSS — Analog ground |
| Pin 59 | PD — Power-down control input |
| Pin 60 | AVDD — Analog supply voltage (1.8 V) |
| Pin 61 | AVSS — Analog ground |
| Pin 62 | NC — Not connected (per datasheet) |
| Pin 63 | AVDD — Analog supply voltage (1.8 V) |
| Pin 64 | AVSS — Analog ground |
| Pin 65 | NC — Not connected (per datasheet) |
| Pin 66 | DRVDD — Digital output supply |
| Pin 67 | DRVSS — Digital output ground |
| Pin 68 | EP — Exposed thermal pad (connect to AVSS) |
Typical Applications
KAD2710L-10Q68 is suitable for 7 applications: Cellular Base-Station IF Digitizer, Communications Test & Measurement Instrumentation, Low-Cost Portable Oscilloscope Channel, Medical Ultrasound Receive Path, Industrial Non-Destructive Testing Imaging, Software-Defined Radio Front-End, Radar and Lidar Signal Acquisition.
Cellular Base-Station IF Digitizer
The KAD2710L-10Q68's 105 MSPS sample rate and 55.6 dBFS SNR at 138 MHz input make it a strong fit for digitizing intermediate-frequency signals in cellular base-station receivers. The 10-bit resolution captures GSM, UMTS, and LTE signals with adequate dynamic range while the LVDS-compatible outputs simplify routing to a baseband FPGA over lossy FR-4 backplanes. A common configuration places the KAD2710L-10Q68 after a 70 MHz SAW filter with a 4:1 impedance-ratio transformer driving the analog inputs differentially. Total power dissipation of 275 mW allows up to four channels per baseband card without exceeding thermal envelopes, and the FemtoCharge(TM) front-end relaxes the ADC driver op-amp slew-rate requirements. Compared with the AD9051, the KAD2710L family offers comparable SNR at roughly 40% lower power.
Recommended
Communications Test & Measurement Instrumentation
Spectrum analyzers, signal generators, and modular instrumentation use the KAD2710L-10Q68 for wideband signal capture up to 50 MHz input bandwidth at 105 MSPS. The 10-bit resolution delivers approximately 58 dB dynamic range, suitable for production-line RF testing where absolute accuracy is less critical than throughput. The exposed-paddle 68-QFN package fits into standard PXI/USB-instrument form factors, and the LVDS outputs allow direct connection to FPGA-based DSP blocks for real-time FFT analysis. The KAD2710L-10Q68 is often paired with a low-jitter clock synthesizer such as an Si5341 to meet SNR targets; total BOM cost stays under USD 25 per channel.
Recommended
Low-Cost Portable Oscilloscope Channel
Handheld and USB oscilloscopes priced under USD 500 frequently use the KAD2710L-10Q68 as the digitizer for one or two input channels. The 105 MSPS sample rate provides 50 MHz real-time bandwidth when 2:1 Nyquist is observed, sufficient for hobbyist and field-service use. The FemtoCharge(TM) input architecture relaxes the front-end analog amplifier design, letting OEMs use lower-cost op-amps while still meeting 8-9 effective bits. Single 1.8 V operation eliminates the -5 V rail typically required by older ADCs, reducing battery drain in portable designs. Compared with a discrete flash converter, the KAD2710L-10Q68 integrates track-and-hold and reference circuits, saving roughly 30 mm^2 of board area per channel.
Recommended
Medical Ultrasound Receive Path
In low-end portable ultrasound carts, the KAD2710L-10Q68 digitizes individual transducer-element receive signals after the TGC amplifier. The 10-bit resolution limits harmonic imaging performance but is adequate for B-mode grayscale at frequencies up to 5 MHz. The 105 MSPS rate oversamples the IF signal by roughly 4x, allowing digital decimation filtering to improve effective SNR to about 11 bits before beamforming. The 68-QFN exposed-paddle package provides low thermal resistance in a sealed acoustic enclosure, and the LVDS outputs minimize EMI pickup on long flex-cable runs to the beamformer FPGA. Renesas is IEC 61326-compliant for medical EMC environments per the datasheet.
Recommended
Industrial Non-Destructive Testing Imaging
Ultrasonic flaw detectors and eddy-current imaging systems use the KAD2710L-10Q68 to capture high-bandwidth transducer signals for offline analysis. The -40 C to +85 C industrial temperature range allows deployment in factory-floor enclosures without additional thermal management. Single 1.8 V supply operation simplifies battery-powered handheld flaw detectors rated for field use. Compared with audio-bandwidth ADCs, the 105 MSPS sample rate captures the full 20 MHz bandwidth of piezoelectric transducers and preserves the phase information needed for time-of-flight diffraction (TOFD) imaging. The KAD2710L-10Q68 typically replaces older 40 MSPS ADCs, doubling the spatial resolution in pipe-inspection scans.
Recommended
Software-Defined Radio Front-End
Wideband SDR receivers for amateur radio, spectrum monitoring, and SIGINT use the KAD2710L-10Q68 to directly sample HF-to-VHF signals at IF frequencies. The 105 MSPS rate captures 50 MHz of spectrum in a single Nyquist band, allowing a single ADC to cover multiple amateur radio bands without retuning. The 55.6 dBFS SNR delivers roughly 9 effective bits, sufficient for narrow-band digital modes like PSK31 and FT8 where integration gain improves effective resolution. Power consumption of 275 mW fits comfortably in battery-powered QRP transceivers, and the LVDS interface connects directly to common SDR FPGA platforms such as the ZC706 reference design.
Recommended
Radar and Lidar Signal Acquisition
Automotive and industrial radar front-ends use the KAD2710L-10Q68 to digitize baseband I/Q signals after the mixer stage. Although the 10-bit resolution is marginal for long-range automotive radar, it is well-suited for short-range industrial proximity sensors and lidar receivers operating at distances under 50 m. The 105 MSPS sample rate captures pulse-Doppler waveforms with 1 MHz resolution after decimation, sufficient for collision-avoidance warning systems. The industrial temperature rating supports under-hood deployment, and the LVDS interface provides noise immunity for the long cable run from the bumper-mounted radar head to the cabin ECU.
Recommended
Recommended Products Summary
Engineering reference data for KAD2710L-10Q68 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | KAD2710L-17Q68 | KAD2710L-21Q68 | KAD2710L-27Q68 | KAD2710C-10Q68 | KAD2708L-35Q68 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 68-QFN (10x10) | 68-QFN (10x10) - same | 68-QFN (10x10) - same | 68-QFN (10x10) - same | 68-QFN (10x10) - same | 68-QFN (10x10) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 8 bit |
| Max Sample Rate | 105 MSPS | 170 MSPS | 210 MSPS | 275 MSPS | 105 MSPS | 350 MSPS |
| Output Interface | LVDS | LVDS | LVDS | LVDS | CMOS | LVDS |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Pin-compatible family enables single PCB layout for multiple sample rates (vs KAD2710L-27Q68)
- FemtoCharge(TM) technology delivers low power for high-speed operation (vs AD9204 (Analog Devices))
- LVDS outputs simplify FPGA interface over long PCB traces (vs KAD2710C-10Q68)
Design Notes
Decoupling: Place 0.1 uF X7R ceramic capacitors within 1-2 mm of every AVDD and DRVDD pin, and add a bulk 10 uF tantalum or ceramic capacitor at the package corner. Separate analog (AVDD/AVSS) and digital (DRVDD/DRVSS) ground planes with a single-point connection under the exposed paddle to avoid digital switching noise coupling into the analog front-end. Keep analog input traces matched in length and routed away from LVDS output pairs to preserve 55 dBFS SNR at 138 MHz input frequency.
LVDS output routing: Maintain 100 ohm differential impedance on LVDS output pairs and route them over a continuous ground plane. Series-stagger the LVDS pairs to avoid simultaneous switching noise coupling back into the analog supply via the package inductance. Keep the length matching within 0.5 mm per pair to preserve the LVDS common-mode voltage and minimize EMI. For long trace lengths (>15 cm) add an external 100 ohm termination resistor at the receiver end only.
Clock quality: The KAD2710L-10Q68 SNR degrades by approximately 3 dB per 1 ps rms of additional clock jitter at 105 MSPS. Use a dedicated low-jitter clock source such as a Si5341 or similar, and place it on the same side of the PCB as the ADC. Do not drive the clock input from a FPGA LVDS output shared with other high-speed signals; provide a dedicated clock buffer. Note also that the L suffix denotes the low-power family - do not confuse with the KAD2710C CMOS-output variant which uses a different digital interface timing.
Exposed paddle: The 68-QFN package's exposed thermal pad MUST be soldered to a continuous ground plane to achieve the published 28 C/W theta-JA. Thermal vias in a 4x4 array under the paddle are recommended for further reduction. At 275 mW continuous dissipation the junction temperature rise is approximately 8 C above ambient, well within the 125 C maximum; however, sealing the part in an enclosure without airflow may increase ambient temperature and require thermal validation.
Compliance Information
RoHS compliant per Renesas product page. Not AEC-Q100 qualified - choose automotive-grade alternative from KADxxxx-Automotive suffix if available. Halogen-free status not explicitly stated in verified data.
