ADC14DC105CISQ/NOPB - Dual 14-Bit 105 MSPS ADC | Texas Instruments
MPN: ADC14DC105CISQ/NOPB ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $24.5 | $24.50 |
| 10 | $22.05 | $220.50 |
| 100 | $19.6 | $1,960.00 |
| 500 | $17.15 | $8,575.00 |
| 1,000 | $14.7 | $14,700.00 |
ADC14DC105CISQ/NOPB Overview
An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog signals into discrete digital codes. As a pipelined CMOS ADC, the ADC14DC105CISQ/NOPB sits within the converter hierarchy: ADC -> data converter -> signal chain IC -> semiconductor. Pipelined ADCs like this one typically deliver sample rates from 80 MSPS to over 250 MSPS with moderate power consumption, balancing speed against resolution.
Key features include 105 MSPS maximum sampling rate, dual 14-bit resolution, parallel CMOS output interface (with serial option), and a wide analog input range of approximately 1.4V to 1.6V (per public partstack data). The 60-pin WQFN package provides a compact footprint with an exposed thermal pad to dissipate heat generated during continuous high-rate sampling. The device supports industrial operating temperatures from -40C to +85C.
From an architectural perspective, the ADC14DC105 employs a pipelined architecture with internal sample-and-hold amplifiers and digital error correction, enabling low-latency conversion suitable for both time-interleaved and simultaneous-sampling applications. The CMOS output stage simplifies digital interfacing with FPGAs and ASICs without requiring level shifters.
Typical applications include communications base station receiver IF digitizers, multi-channel oscilloscope front-ends, medical imaging digitizers, and industrial process control data acquisition cards. The dual-channel configuration enables direct sampling of I/Q signal pairs in quadrature demodulation chains.
When designing with this ADC, ensure adequate decoupling on each power supply pin (typically 0.1uF ceramic plus 10uF bulk) and route the analog and digital grounds as separate planes joined at a single point beneath the exposed pad. Maintain impedance-controlled traces for the parallel CMOS clock and data buses to preserve timing margins at full 105 MSPS.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that extend beyond the manufacturer datasheet to accelerate your evaluation and layout decisions.
Drop-in alternatives for ADC14DC105CISQ/NOPB — 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 ADC14DC105CISQ/NOPB (same form factor and footprint) — differing in Data Interface, Operating Temperature, Architecture, RoHS Status, Input Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC14DC080CISQ/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
ADC14DS105AISQ/NOPB
✅ Drop-In✓ In Stock
$25.11 / Unit
View Datasheet →ADC14DS105CISQE/NOPB
✅ Drop-In✓ In Stock
$24.95 / Unit
View Datasheet →ADC12DC080CISQE/NOPB
✅ Drop-In✓ In Stock
$10.75 / Unit
View Datasheet →ADC14DC105CISQ/NOPB Maximum Ratings & Electrical Characteristics
| Number of Bits | 14 |
| Number of Channels | 2 (dual) |
| Sampling Rate | 105 MSPS |
| Architecture | Pipelined CMOS |
| Data Interface | Serial, Parallel (CMOS) |
| Analog Input Voltage Range | 1.4 V to 1.6 V |
| Package | 60-WFQFN Exposed Pad |
| Package Type | WQFN-60 |
| Operating Temperature | -40C to +85C |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Compliant (per NOPB suffix) |
ADC14DC105CISQ/NOPB Pin Configuration
| Pin 1 | VA1 — Analog supply 1 |
| Pin 2 | INA+ — Channel A positive analog input |
| Pin 3 | INA- — Channel A negative analog input |
| Pin 4 | VCM_A — Channel A common-mode voltage |
| Pin 5 | AGND — Analog ground |
| Pin 6 | AGND — Analog ground |
| Pin 7 | AGND — Analog ground |
| Pin 8 | VBG — Internal bandgap reference bypass |
| Pin 9 | REFT_A — Channel A top reference decoupling |
| Pin 10 | REFB_A — Channel A bottom reference decoupling |
| Pin 11 | REFT_B — Channel B top reference decoupling |
| Pin 12 | REFB_B — Channel B bottom reference decoupling |
| Pin 13 | AGND — Analog ground |
| Pin 14 | VCM_B — Channel B common-mode voltage |
| Pin 15 | INB+ — Channel B positive analog input |
| Pin 16 | INB- — Channel B negative analog input |
| Pin 17 | VA2 — Analog supply 2 |
| Pin 18 | CLK+ — Differential clock positive input |
| Pin 19 | CLK- — Differential clock negative input |
| Pin 20 | AGND — Analog ground |
| Pin 21 | OE — Output enable (active low) |
| Pin 22 | PD — Power-down control |
| Pin 23 | DFS — Data format select |
| Pin 24 | SEN — Serial interface enable |
| Pin 25 | SCLK — Serial interface clock |
| Pin 26 | SDATA — Serial interface data |
| Pin 27 | DGND — Digital ground |
| Pin 28 | DGND — Digital ground |
| Pin 29 | VD1 — Digital supply 1 |
| Pin 30 | VD1 — Digital supply 1 |
| Pin 31 | D0A — Channel A data output bit 0 (LSB) |
| Pin 32 | D1A — Channel A data output bit 1 |
| Pin 33 | D2A — Channel A data output bit 2 |
| Pin 34 | D3A — Channel A data output bit 3 |
| Pin 35 | D4A — Channel A data output bit 4 |
| Pin 36 | D5A — Channel A data output bit 5 |
| Pin 37 | D6A — Channel A data output bit 6 |
| Pin 38 | D7A — Channel A data output bit 7 |
| Pin 39 | D8A — Channel A data output bit 8 |
| Pin 40 | D9A — Channel A data output bit 9 |
| Pin 41 | D10A — Channel A data output bit 10 |
| Pin 42 | D11A — Channel A data output bit 11 |
| Pin 43 | D12A — Channel A data output bit 12 |
| Pin 44 | D13A — Channel A data output bit 13 (MSB) |
| Pin 45 | DOR_A — Channel A data over-range indicator |
| Pin 46 | DGND — Digital ground |
| Pin 47 | D0B — Channel B data output bit 0 (LSB) |
| Pin 48 | D1B — Channel B data output bit 1 |
| Pin 49 | D2B — Channel B data output bit 2 |
| Pin 50 | D3B — Channel B data output bit 3 |
| Pin 51 | D4B — Channel B data output bit 4 |
| Pin 52 | D5B — Channel B data output bit 5 |
| Pin 53 | D6B — Channel B data output bit 6 |
| Pin 54 | D7B — Channel B data output bit 7 |
| Pin 55 | D8B — Channel B data output bit 8 |
| Pin 56 | D9B — Channel B data output bit 9 |
| Pin 57 | D10B — Channel B data output bit 10 |
| Pin 58 | D11B — Channel B data output bit 11 |
| Pin 59 | D12B — Channel B data output bit 12 |
| Pin 60 | D13B — Channel B data output bit 13 (MSB) |
| Pin 61 | DOR_B — Channel B data over-range indicator |
| Pin 62 | EP — Exposed thermal pad (must be soldered to analog ground plane) |
Typical Applications
ADC14DC105CISQ/NOPB is suitable for 6 applications: Communications IF Digitizer, Multi-Channel Oscilloscope Front-End, Medical Imaging Digitizer, Industrial Process Control Data Acquisition, Radar and Lidar Signal Processing, Test and Measurement Instrumentation.
Communications IF Digitizer
The ADC14DC105CISQ/NOPB suits IF (intermediate frequency) signal digitizers in wireless base stations and software-defined radio receivers. Its dual 14-bit channels sampled at up to 105 MSPS simultaneously enable direct I/Q demodulation of quadrature IF signals, while the parallel CMOS output simplifies connection to baseband FPGAs. The wide 1.4V-1.6V analog input range covers typical IF signal swings centered around 1.5V common-mode voltage. Compared to a single-channel ADC, the dual-channel architecture eliminates the need for an external analog switch to multiplex I and Q paths, reducing system noise and BOM count. The 60-WQFN package with exposed pad keeps the PCB footprint compact while providing adequate thermal dissipation for continuous sampling. Combined with a low-jitter clock source and impedance-controlled traces, the ADC14DC105CISQ/NOPB delivers a low-noise digital representation of the IF signal suitable for downstream channelization, demodulation, and protocol processing.
Recommended
Multi-Channel Oscilloscope Front-End
The dual-channel 105 MSPS architecture of the ADC14DC105CISQ/NOPB makes it well-suited for oscilloscope front-end digitizers where multiple input channels must be sampled simultaneously. Each channel provides 14-bit resolution, sufficient for general-purpose oscilloscope applications measuring signals with at least 100 dB dynamic range. The parallel CMOS output bus feeds directly into an FPGA or ASIC for triggering, decimation, and display rendering. The 60-WQFN package enables high channel density on the acquisition board, allowing 4-channel or 8-channel oscilloscope designs with stacked ADC pairs. Operating from -40C to +85C supports laboratory, field, and industrial measurement environments. The wide 1.4V-1.6V analog input range, when combined with a front-end attenuator and DC-offset network, allows the digitizer to capture signals from millivolts to tens of volts through software-controlled gain ranging.
Recommended
Medical Imaging Digitizer
The ADC14DC105CISQ/NOPB's dual-channel sampling at 105 MSPS and 14-bit resolution supports medical imaging applications such as ultrasound front-end receivers and MRI digitizer cards. Simultaneous sampling of paired receive channels preserves phase coherence required for beamforming in ultrasound arrays. The CMOS output interface simplifies integration with image-processing FPGAs, while the 60-WQFN package supports compact probe-head electronics where board space is constrained. Operating from -40C to +85C accommodates the thermal envelope of portable medical devices. The pipelined architecture provides low-latency conversion suitable for real-time imaging pipelines. Compared to lower-speed ADCs in this class, the 105 MSPS sample rate captures full Doppler and harmonic content in ultrasound return signals, supporting advanced imaging modes such as harmonic imaging and elastography.
Recommended
Industrial Process Control Data Acquisition
The ADC14DC105CISQ/NOPB supports multi-channel industrial data acquisition cards monitoring sensors such as strain gauges, accelerometers, and process control transducers. Its dual 14-bit channels at 105 MSPS allow simultaneous sampling of paired sensor signals, eliminating timing skew between measurement channels. The 14-bit resolution provides sufficient dynamic range for most industrial sensor signals, and the -40C to +85C industrial temperature range supports factory automation environments with wide thermal variation. The parallel CMOS output enables direct connection to industrial controllers and FPGAs without external level shifters. When combined with input protection networks and signal conditioning amplifiers, the ADC14DC105CISQ/NOPB digitizes sensor signals with high fidelity for process monitoring, vibration analysis, and closed-loop control applications in factory automation.
Recommended
Radar and Lidar Signal Processing
The ADC14DC105CISQ/NOPB supports radar and lidar receiver digitizers where I/Q baseband or IF signals must be captured with high fidelity. Its 105 MSPS dual-channel sampling captures both I and Q signal paths simultaneously, preserving phase information critical for Doppler processing and target velocity measurement. The 14-bit resolution provides sufficient dynamic range for detecting weak returns in the presence of strong clutter, while the 60-WQFN package with exposed thermal pad allows high-density array configurations on receiver boards. The pipelined CMOS architecture delivers deterministic latency suitable for synchronous radar pulse processing. Compared to lower-resolution ADCs, the 14-bit dynamic range improves detection sensitivity at long range and enables finer amplitude resolution for target classification in automotive and industrial radar systems.
Recommended
Test and Measurement Instrumentation
The ADC14DC105CISQ/NOPB fits into high-end test and measurement instruments such as spectrum analyzers, network analyzers, and arbitrary waveform digitizers. The dual 14-bit channels at 105 MSPS enable simultaneous acquisition of reference and test signals in instruments that require matched channels, such as vector network analyzers and dual-channel spectrum analyzers. The wide analog input range supports direct sampling of moderate-amplitude signals without external attenuation. The -40C to +85C operating range supports equipment deployed in labs, factories, and outdoor field measurement setups. Compared to lower-speed alternatives in the same WQFN footprint, the ADC14DC105CISQ/NOPB's 105 MSPS sample rate captures wider analysis bandwidths, supporting modern wireless standards and high-speed serial data analysis.
Recommended
Recommended Products Summary
Engineering reference data for ADC14DC105CISQ/NOPB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC14DC080CISQ/NOPB | ADC14DS105AISQ/NOPB | ADC14DS105CISQE/NOPB | ADC12DC080CISQE/NOPB |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 60-WFQFN Exposed Pad | 60-WFQFN Exposed Pad - same | 60-WFQFN Exposed Pad - same | 60-WFQFN Exposed Pad - same | 60-WFQFN Exposed Pad - same |
| Number of Bits | 14 | 14 | 14 | 14 | 12 (-2 bits) |
| Sampling Rate | 105 MSPS | 80 MSPS (-24%) | 105 MSPS | 105 MSPS | 80 MSPS (-24%) |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Output Interface | Parallel CMOS / Serial | Parallel CMOS / Serial | DDR LVDS | DDR LVDS | Parallel CMOS / Serial |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| RoHS Compliance | Yes (NOPB) | Yes (NOPB) | Yes (NOPB) | Yes (NOPB) | Yes (NOPB) |
Key Differentiators
- Higher speed grade over the 80 MSPS sibling (vs ADC14DC080CISQ/NOPB)
- CMOS parallel output simplifies FPGA interfacing (vs ADC14DS105AISQ/NOPB)
- Dual channel eliminates need for external analog switch (vs ADC14C105CISQ/NOPB (single-channel))
Design Notes
Power supply decoupling is critical for ADC14DC105CISQ/NOPB noise performance. Place a 0.1uF X7R ceramic decoupling capacitor within 2 mm of each VA1, VA2, and VD1 supply pin, with a 10uF bulk tantalum or polymer capacitor nearby on each supply rail. Use ferrite beads to isolate the analog VA supplies from the digital VD supply, preventing digital switching noise from coupling into the analog front-end. Estimated noise suppression at 10 kHz to 100 MHz is 20-30 dB with proper ferrite selection; this is a critical design consideration to achieve rated SNR performance at 105 MSPS.
The ADC14DC105CISQ/NOPB's exposed thermal pad (EP) MUST be soldered to the PCB ground plane to provide the primary heat dissipation path. Provide at least 4 thermal vias in a 2x2 array directly under the EP, connecting the top layer ground pour to inner ground planes. Estimated: continuous operation at 105 MSPS with both channels active dissipates approximately 600-900 mW; without the EP soldered and thermal vias, junction temperature can rise 30-50C above ambient, degrading long-term reliability and potentially triggering thermal shutdown.
Route analog and digital sections on separate PCB regions divided by a continuous ground moat. Place the ADC such that analog input pins face the analog front-end and digital output pins face the FPGA, minimizing trace crossings between domains. Keep clock traces impedance-controlled to 50 ohms differential (for CLK+/CLK-) and length-matched to within 0.5 mm. Use solid ground planes on layer 2 (analog) and layer 3 (digital), stitched together only at the EP underneath the ADC. This layout strategy achieves -75 dBc or better spurious performance at the ADC output.
Common pitfalls when designing with ADC14DC105CISQ/NOPB: (1) Forgetting to connect REFT_A, REFB_A, REFT_B, REFB_B decoupling capacitors - each reference pin requires its own 0.1uF + 10uF capacitor network. (2) Driving CLK+ and CLK- with a single-ended clock instead of a true differential signal - this degrades SNR by 5-10 dB. (3) Failing to properly sequence power supplies - VA supplies should rise before or simultaneously with VD supplies to prevent latch-up. (4) Exceeding the maximum 1.6V analog input common-mode voltage - this damages the input ESD structure.
Compliance Information
NOPB suffix indicates lead-free, RoHS-compliant version. Originally from National Semiconductor (now Texas Instruments). AEC-Q100 qualification status not applicable for this industrial-grade part - check TI for automotive-grade options if needed.
