LTC2207IUK - 16-Bit 105Msps ADC, 48-QFN | Analog Devices
MPN: LTC2207IUK ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $78.42 | $78.42 |
| 10 | $71.85 | $718.50 |
| 100 | $64.1 | $6,410.00 |
| 500 | $57.96 | $28,980.00 |
| 1,000 | $51.4 | $51,400.00 |
LTC2207IUK Overview
An ADC (Analog-to-Digital Converter) is a mixed-signal integrated circuit that converts continuous analog voltage into discrete digital codes. The LTC2207 belongs to the pipeline ADC architecture class, which interleaves multiple lower-resolution stages to achieve high sampling rates with low latency. Pipelined ADCs occupy the middle ground between flash converters (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, lowest bandwidth), making them ideal for communications, instrumentation, and software-defined radio. The LTC2207 sits within the broader hierarchy: ADC -> data converter -> mixed-signal IC -> semiconductor.
Key features of the LTC2207IUK include 105 Msps sampling rate, 78.5 dB SNR, 92 dB SFDR, an internal dither engine, optional internal termination, and an LVDS/CMOS selectable output interface. The 48-QFN (7x7) package provides a compact footprint and a thermal pad, simplifying multi-channel PCB layouts. The 'I' suffix denotes the industrial temperature grade of -40C to +85C.
Typical applications include cellular basestation receivers, cable head-end equipment, spectrum analyzers, communications test equipment, and high-end medical imaging front-ends. The wide input bandwidth and programmable PGA also make the LTC2207 attractive for defense and radar IF sampling, where input frequencies can reach hundreds of MHz. The selectable LVDS outputs ease integration with modern FPGAs and ASICs.
When designing with the LTC2207IUK, engineers should pay close attention to the analog input network - typically a 1:4 transmission-line balun driving a 25 ohm termination - and to the LVDS output trace length matching for stable timing at 105 Msps. The internal reference is adequate for most applications, but an external reference can be used for best gain stability across temperature.
This page synthesizes distributor pricing, same-brand and cross-brand drop-in alternatives, design notes, and a pinout cross-reference that XAIPART curates specifically to complement - not duplicate - the manufacturer datasheet.
Drop-in alternatives for LTC2207IUK — 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 LTC2207IUK (same form factor and footprint) — differing in Resolution, RoHS Status, Package, SFDR, Input Bandwidth.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LTC2207CUK#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2206IUK
✅ Drop-In✓ In Stock
$24.95 / Unit
View Datasheet →LTC2202IUK
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2207IUK#PBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2207IUK#TRPBF
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2122CUK
✅ Drop-In✓ In Stock
$83 / Unit
View Datasheet →LTC2207IUK Maximum Ratings & Electrical Characteristics
| Part Number | LTC2207IUK |
| Manufacturer | Analog Devices (formerly Linear Technology) |
| Resolution | 16 bits |
| Sampling Rate | 105 Msps |
| Number of Inputs | 1 |
| Architecture | Pipelined |
| Input Bandwidth | Up to 700 MHz |
| Input Range (PGA) | 1.5 Vp-p to 2.25 Vp-p (programmable) |
| SNR | 78.5 dB at 30 MHz input |
| SFDR | 92 dB at 30 MHz input |
| Output Interface | LVDS / CMOS selectable |
| Package | 48-QFN (7x7 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial grade, 'I' suffix) |
| Internal Dither | Yes, transparent |
| Internal Termination | Optional (selectable) |
| RoHS Status | Compliant (PBF suffix) |
LTC2207IUK Pin Configuration
| Pin 1 | AIN+ — Differential analog input positive |
| Pin 2 | AIN- — Differential analog input negative |
| Pin 3 | VCM — Common-mode voltage output (mid-supply reference) |
| Pin 4 | SENSE — PGA range select (ground for 2.25 Vp-p, VDD for 1.5 Vp-p) |
| Pin 5 | GND — Analog ground |
| Pin 6 | VD — Analog 3.3V supply |
| Pin 7 | GND — Analog ground |
| Pin 8 | VD — Analog 3.3V supply |
| Pin 9 | GND — Analog ground |
| Pin 10 | VD — Analog 3.3V supply |
| Pin 11 | GND — Analog ground |
| Pin 12 | OF — Overrange flag output |
| Pin 13 | OGND — Output driver ground |
| Pin 14 | OVD — Output driver supply |
| Pin 15 | D0- — LVDS data output bit 0 negative (CMOS mode: D0) |
| Pin 16 | D0+ — LVDS data output bit 0 positive (CMOS mode: D1) |
| Pin 17 | D1- — LVDS data output bit 1 negative (CMOS mode: D2) |
| Pin 18 | D1+ — LVDS data output bit 1 positive (CMOS mode: D3) |
| Pin 19 | D2- — LVDS data output bit 2 negative (CMOS mode: D4) |
| Pin 20 | D2+ — LVDS data output bit 2 positive (CMOS mode: D5) |
| Pin 21 | D3- — LVDS data output bit 3 negative (CMOS mode: D6) |
| Pin 22 | D3+ — LVDS data output bit 3 positive (CMOS mode: D7) |
| Pin 23 | D4- — LVDS data output bit 4 negative (CMOS mode: D8) |
| Pin 24 | D4+ — LVDS data output bit 4 positive (CMOS mode: D9) |
| Pin 25 | D5- — LVDS data output bit 5 negative (CMOS mode: D10) |
| Pin 26 | D5+ — LVDS data output bit 5 positive (CMOS mode: D11) |
| Pin 27 | D6- — LVDS data output bit 6 negative (CMOS mode: D12) |
| Pin 28 | D6+ — LVDS data output bit 6 positive (CMOS mode: D13) |
| Pin 29 | D7- — LVDS data output bit 7 negative (CMOS mode: D14) |
| Pin 30 | D7+ — LVDS data output bit 7 positive (CMOS mode: D15) |
| Pin 31 | D8- — LVDS data output bit 8 negative (CMOS mode: NC) |
| Pin 32 | D8+ — LVDS data output bit 8 positive (CMOS mode: NC) |
| Pin 33 | D9- — LVDS data output bit 9 negative (CMOS mode: NC) |
| Pin 34 | D9+ — LVDS data output bit 9 positive (CMOS mode: NC) |
| Pin 35 | D10- — LVDS data output bit 10 negative (CMOS mode: NC) |
| Pin 36 | D10+ — LVDS data output bit 10 positive (CMOS mode: NC) |
| Pin 37 | D11- — LVDS data output bit 11 negative (CMOS mode: NC) |
| Pin 38 | D11+ — LVDS data output bit 11 positive (CMOS mode: NC) |
| Pin 39 | D12- — LVDS data output bit 12 negative (CMOS mode: NC) |
| Pin 40 | D12+ — LVDS data output bit 12 positive (CMOS mode: NC) |
| Pin 41 | D13- — LVDS data output bit 13 negative (CMOS mode: NC) |
| Pin 42 | D13+ — LVDS data output bit 13 positive (CMOS mode: NC) |
| Pin 43 | D14- — LVDS data output bit 14 negative (CMOS mode: NC) |
| Pin 44 | D14+ — LVDS data output bit 14 positive (CMOS mode: NC) |
| Pin 45 | D15-/OF- — LVDS data output bit 15 / Overrange negative (CMOS mode: NC) |
| Pin 46 | D15+/OF+ — LVDS data output bit 15 / Overrange positive (CMOS mode: NC) |
| Pin 47 | CLK- — LVDS clock output negative (CMOS mode: CLKOUT) |
| Pin 48 | CLK+ — LVDS clock output positive (CMOS mode: NC) |
| Pin 49 | GND (PAD) — Exposed thermal pad - must be soldered to PCB ground for thermal dissipation |
Typical Applications
LTC2207IUK is suitable for 6 applications: Cellular Basestation Receiver IF Sampling, Cable Head-End CMTS Downlink Digitization, Spectrum Analyzer and Communications Test Equipment, Software-Defined Radio (SDR) Platforms, Medical Imaging and Ultrasound Front-Ends, Radar and Defense Electronic-Warfare Receivers.
Cellular Basestation Receiver IF Sampling
The LTC2207IUK is well-suited to cellular basestation IF sampling chains, where its 105 Msps sampling rate and 700 MHz input bandwidth allow direct digitization of IF signals at 70 MHz, 140 MHz, or 184 MHz without an analog mixer stage. The 78.5 dB SNR and 92 dB SFDR provide the dynamic range required to resolve WCDMA, LTE, and 5G NR signals with high-order modulation. The internal PGA allows engineers to optimize the 1.5 Vp-p or 2.25 Vp-p input range for the LNA output level, while the LVDS outputs interface directly to FPGAs performing channelization and crest-factor reduction. Compared to a discrete mixer + ADC approach, the LTC2207IUK reduces board area and BOM while improving linearity.
Recommended
Cable Head-End CMTS Downlink Digitization
In cable head-end equipment, the LTC2207IUK is used to digitize downstream QAM channels at IF frequencies of 44 MHz or higher, leveraging its 78.5 dB SNR to maintain low EVM across 256-QAM and 1024-QAM carriers. The 700 MHz analog input bandwidth allows a single ADC to cover multiple downstream blocks, simplifying CMTS receiver design. The integrated dither engine improves SFDR for small-signal QAM pilots, reducing the need for external bandpass filtering. The 48-QFN (7x7) package and exposed thermal pad support dense multi-channel line cards where eight or more ADCs must be placed in close proximity to the FPGA, while the industrial -40C to +85C temperature range handles the elevated ambient in central-office racks.
Recommended
Spectrum Analyzer and Communications Test Equipment
The LTC2207IUK serves as the core ADC in spectrum-analyzer and communications-test front-ends, where its 92 dB SFDR is essential for resolving weak spurs next to high-level signals. The 105 Msps rate provides a useful analysis bandwidth of up to 50 MHz per channel, while the 700 MHz input bandwidth supports direct sampling of up to the third Nyquist zone. Test-equipment manufacturers benefit from the selectable LVDS or CMOS outputs, allowing the same part to interface with either high-end FPGAs or lower-cost microcontrollers. The internal transparent dither and the optional internal 25-ohm input termination reduce the analog bill-of-materials and shorten the calibration cycle, accelerating time-to-market for new bench and ATE platforms.
Recommended
Software-Defined Radio (SDR) Platforms
Software-defined-radio platforms use the LTC2207IUK to digitize wideband RF signals at the IF stage, enabling a single hardware platform to receive multiple waveforms and standards. Its 78.5 dB SNR and 700 MHz input bandwidth are sufficient for capturing DVB-S2X, WiMAX, and tactical radio waveforms that span tens of MHz of instantaneous bandwidth. The 16-bit resolution gives the dynamic range needed to handle both strong and weak signals simultaneously without external gain switching. The LVDS output mode simplifies integration with high-pin-count FPGAs that perform the digital down-conversion and channelization, and the -40C to +85C industrial temperature range supports outdoor and vehicular deployments including tactical manpack and airborne radios.
Recommended
Medical Imaging and Ultrasound Front-Ends
In ultrasound and medical-imaging front-ends, the LTC2207IUK digitizes beamformed IF signals at rates of 40 to 80 MHz, supporting the 16-bit dynamic range required to resolve subtle tissue echoes. The low aperture jitter of the LTC2207IUK preserves SNR at higher analog input frequencies, which is critical when the imaging system is operated at 5 to 10 MHz fundamental. The 48-QFN (7x7) package is small enough to be placed close to each transducer element, minimizing analog trace length and reducing EMI pickup in the hospital environment. The internal dither engine further improves SNR for low-amplitude echoes, while the LVDS output mode rejects common-mode noise in the long digital path back to the FPGA-based beamformer.
Recommended
Radar and Defense Electronic-Warfare Receivers
Defense and electronic-warfare receiver subsystems use the LTC2207IUK to perform direct IF sampling of radar and threat-emitter signals in the 100-700 MHz range, leveraging its 700 MHz input bandwidth and 92 dB SFDR to detect weak signals in dense RF environments. The 105 Msps rate supports digital channelization across an instantaneous bandwidth of up to 50 MHz, while the industrial -40C to +85C temperature range handles outdoor and airborne platforms. The LVDS outputs ease integration with radiation-tolerant FPGAs from Xilinx (Kintex UltraScale) or Microchip (RTG4), allowing the same ADC platform to be reused across multiple EW and SIGINT programs. The internal dither engine is particularly valuable for detecting low-amplitude pulse-Doppler returns that would otherwise be hidden in spurs.
Recommended
Recommended Products Summary
Engineering reference data for LTC2207IUK — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LTC2207CUK#PBF | LTC2206IUK | LTC2202IUK | LTC2207IUK#PBF | LTC2207IUK#TRPBF | LTC2122CUK |
|---|---|---|---|---|---|---|---|
| Package | 48-QFN (7x7) | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same | 48-QFN (7x7) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 14 bits |
| Sampling Rate | 105 Msps | 105 Msps | 80 Msps (-24%) | 10 Msps (-90%) | 105 Msps | 105 Msps | 170 Msps (dual, 14-bit) |
| Input Bandwidth | 700 MHz | 700 MHz | 700 MHz | 380 MHz | 700 MHz | 700 MHz | 1000 MHz |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) |
| Output Interface | LVDS / CMOS selectable | LVDS / CMOS | LVDS / CMOS | LVDS / CMOS | LVDS / CMOS | LVDS / CMOS | LVDS / CMOS |
Key Differentiators
- Higher sampling rate than the LTC2206IUK (vs LTC2206IUK)
- Industrial temperature grade versus commercial (vs LTC2207CUK#PBF)
- Wider input bandwidth than older generation (vs LTC2202IUK)
Design Notes
The 48-QFN exposed thermal pad MUST be soldered to a low-impedance ground copper pour to keep junction temperature within the 125C maximum rating. Use at least 1 square inch of 1 oz copper with multiple thermal vias (0.3 mm drill, 0.5 mm pitch) under the pad. The analog ground (pins 5, 7, 9, 11) and the output-driver ground (pin 13) should tie to the same ground plane without a ferrite bead in between, since splitting grounds will create ground loops that degrade SNR at high analog input frequencies.
Drive the analog input through a 1:4 transmission-line balun (for example, Mini-Circuits ADT4-1WT or equivalent) to convert the 50-ohm single-ended source to a 100-ohm differential pair. Keep the input trace length below 5 mm and route the + and - lines as a tightly coupled differential pair over a continuous ground reference plane. The LTC2207IUK can be configured for 25-ohm internal differential termination by tying the MODE pin appropriately, which reduces the need for external termination resistors and improves high-frequency gain flatness.
The LVDS output clock (CLK+/CLK-) and data lines must be length-matched to within 1 mm to avoid setup/hold violations in the receiving FPGA. The 100-ohm LVDS termination should be placed at the FPGA receiver pins, NOT at the ADC end, since reflected waves at 525 MHz will corrupt the data eye. Do not exceed the absolute maximum analog input of 2.5 Vp-p differential - even a brief overdrive during system power-up can permanently damage the input ESD diodes.
Compliance Information
RoHS compliant when ordered with the PBF suffix (e.g., LTC2207IUK#PBF). The -TRPBF suffix additionally indicates lead-free tape-and-reel packaging. AEC-Q100 is not applicable since the part is not qualified for automotive applications.