LTC2242IUP-10 - 10-Bit, 250Msps ADC, Industrial Temp | Analog Devices
MPN: LTC2242IUP-10 ✓ فعالLTC2242IUP-10 جائزہ
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous-time analog voltage and produces a quantized digital code. The 250 Msps class belongs to the high-speed pipelined ADC family, used in applications where bandwidth, latency, and dynamic range must be balanced. Within the broader taxonomy, LTC2242IUP-10 is a member of: ADC -> data converter -> mixed-signal IC -> semiconductor. Pipeline ADCs are the workhorse of communications, radar, and test instrumentation front ends.
Key differentiating specifications include 60.5 dB SNR and 78 dB SFDR for high-frequency signal capture, 1.2 GHz full-power input bandwidth that exceeds the Nyquist limit and simplifies front-end anti-aliasing, and selectable LVDS / CMOS / demultiplexed CMOS output modes for direct FPGA or ASIC interfacing. The integrated encode clock duty-cycle stabilizer relaxes clock-source jitter requirements, easing system timing design.
The device uses a multi-stage switched-capacitor pipeline architecture with on-chip reference and sample-and-hold, enabling low-latency conversion at full sample rate. Industrial temperature grade (-40C to +85C) and 9x9 mm exposed-pad QFN-64 package support dense PCB layouts with effective thermal dissipation up to 740 mW.
Typical applications include cellular base-station receivers, cable modem head-ends, test and measurement digitizers, medical imaging, and high-speed radar digitizing front ends. The LVDS output mode is preferred for >150 MHz clock distribution and EMC-sensitive designs.
When designing, route analog and digital grounds separately and stitch them only at the exposed pad; place a 2.2 uF X7R bypass close to the supply pins. The encode input should be AC-coupled with the on-chip 100 ohm termination engaged to preserve SNR.
This page synthesizes distributor pricing, drop-in alternatives, and design notes not consolidated on the manufacturer datasheet, giving engineers a single-page reference for selection and sourcing.
کے لیے ڈراپ اِن متبادل LTC2242IUP-10 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں LTC2242IUP-10 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Architecture, Output Interface, Package, Sample Rate.
LTC2242CUP-10#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2242IUP-12#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2241IUP-12#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2240IUP-10#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2221CUP#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2227IUH#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2142IUP-14#PBF
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LTC2242IUP-10 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Architecture | Pipelined ADC |
| ریزولوشن | 10 bit |
| Sample Rate | 250 Msps (250000 kSamples/s) |
| Number of Inputs | 1 |
| Input Bandwidth (Full Power) | 1.2 GHz |
| SNR | 60.5 dB |
| SFDR | 78 dB |
| سپلائی وولٹیج | 2.5 V (single) |
| Power Dissipation | 740 mW |
| Output Interface | LVDS, CMOS, or Demultiplexed CMOS |
| پیکیج | QFN-64 (9x9 mm) with exposed pad |
| ماؤنٹنگ ٹائپ | Surface Mount |
| آپریٹنگ درجہ حرارت رینج | -40C to +85C (Industrial) |
| Sample-and-Hold | Integrated |
| Encode Input | Single-ended, 100 ohm internal termination |
LTC2242IUP-10 پن کنفیگریشن
| پن 1 | AIN — Analog input (single-ended, 50 ohm matched) |
| پن 2 | SENSE — Reference mode select (ground for internal reference) |
| پن 3 | VREF — Reference voltage bypass |
| پن 4 | REFT — Reference top bypass |
| پن 5 | REFB — Reference bottom bypass |
| پن 6 | VD — Digital supply 2.5V |
| پن 7 | OGND — Output ground (digital) |
| پن 8 | D0+/D0- — LVDS data output bit 0 (differential) |
| پن 9 | D1+/D1- — LVDS data output bit 1 (differential) |
| پن 10 | D2+/D2- — LVDS data output bit 2 (differential) |
| پن 11 | D3+/D3- — LVDS data output bit 3 (differential) |
| پن 12 | D4+/D4- — LVDS data output bit 4 (differential) |
| پن 13 | ENC+/ENC- — Encode clock input (differential, 100 ohm termination) |
| پن 14 | D5+/D5- — LVDS data output bit 5 (differential) |
| پن 15 | D6+/D6- — LVDS data output bit 6 (differential) |
| پن 16 | D7+/D7- — LVDS data output bit 7 (differential) |
| پن 17 | D8+/D8- — LVDS data output bit 8 (differential) |
| پن 18 | D9+/D9- — LVDS data output bit 9 (differential) |
| پن 19 | OVD — Output driver supply |
| پن 20 | OGND — Output ground |
| پن 21 | VA — Analog supply 2.5V |
| پن 22 | GND — Analog ground |
| پن 23-32 | NC — Not connected (per datasheet) |
| پن 33-40 | NC — Not connected (per datasheet) |
| پن 41-48 | NC — Not connected (per datasheet) |
| پن 49-56 | NC — Not connected (per datasheet) |
| پن 57-62 | NC — Not connected (per datasheet) |
| پن 63 | VA — Analog supply 2.5V |
| پن 64 | GND — Analog ground (also exposed pad) |
عام استعمالات
LTC2242IUP-10 کے لیے موزوں ہے 6 ایپلیکیشنs: Cellular Base-Station Receiver Digitizer, Digital Oscilloscope Front End, Cable Modem Head-End Digitizer, Medical Ultrasound Beamformer Receiver, Spectrum Analyzer IF Digitizer, Radar and Lidar Pulse Digitizer.
Cellular Base-Station Receiver Digitizer
The LTC2242IUP-10's 250 Msps sample rate and 78 dB SFDR make it ideal for digitizing the 70-140 MHz intermediate frequency (IF) stages of WCDMA / LTE base-station receivers. With 1.2 GHz full-power input bandwidth, the ADC can under-sample high IFs without an external anti-aliasing filter, simplifying the receiver chain. Placed between the SAW filter and the digital downconverter FPGA, the 10-bit resolution is sufficient for capturing the signal envelope at the required carrier-to-noise ratio. Power dissipation of 740 mW from a single 2.5 V supply keeps thermal design tractable in sealed outdoor radio units.
تجویز کردہ
Digital Oscilloscope Front End
The LTC2242IUP-10 suits low-end digital oscilloscope and data-acquisition front ends where 250 Msps real-time sampling is required to capture single-shot transients. Its 1.2 GHz analog input bandwidth lets the scope accurately display signals up to the fifth harmonic of the rated bandwidth. The LVDS output mode streams data to a downstream FPGA at 250 MHz DDR with low EMI. Compared with a 12-bit ADC, the 10-bit LTC2242IUP-10 trades vertical resolution for speed, enabling more channels per FPGA at lower system cost in modular oscilloscope designs.
تجویز کردہ
Cable Modem Head-End Digitizer
In DOCSIS 3.0 / 3.1 cable modem termination systems (CMTS) and upstream burst receivers, the LTC2242IUP-10 samples the upstream 5-65 MHz band at 250 Msps, providing more than 4x oversampling for accurate QAM demodulation. The 60.5 dB SNR comfortably exceeds the 38 dB requirement for 256-QAM, while 78 dB SFDR captures the wide dynamic range of aggregated upstream channels. Placed after the upstream AGC stage, the ADC feeds an FPGA-based burst demodulator. The 740 mW power is acceptable for head-end rack-mount equipment with forced-air cooling.
تجویز کردہ
Medical Ultrasound Beamformer Receiver
The LTC2242IUP-10 digitizes RF echo signals in the 1-15 MHz band of medical ultrasound beamformer receivers. Its 1.2 GHz bandwidth comfortably captures the higher harmonics needed for harmonic imaging, and 250 Msps enables a deep field of view without range ambiguities. The 78 dB SFDR is critical for distinguishing low-contrast tissue features from fundamental and harmonic leakage. Each channel in a phased-array probe uses one ADC; the QFN-64 footprint allows high channel density on the receiver board.
تجویز کردہ
Spectrum Analyzer IF Digitizer
Wideband spectrum analyzers and signal intercept receivers use the LTC2242IUP-10 to digitize the final IF stage after a swept local oscillator. At 250 Msps, the ADC provides 125 MHz instantaneous bandwidth per Nyquist zone. Combined with 78 dB SFDR, this enables detection of low-level spurs adjacent to large signals. The device's duty-cycle-stabilized encode input relaxes the requirement on the LO-derived clock, lowering BOM cost. Industrial temperature grade supports portable and field-deployed spectrum analyzers.
تجویز کردہ
Radar and Lidar Pulse Digitizer
The LTC2242IUP-10 captures return pulses in short-range radar and lidar receivers. Its 1.2 GHz bandwidth preserves the rise time of sub-nanosecond pulses, while 250 Msps provides sufficient temporal resolution for time-of-flight ranging to within 2 meters. The 60.5 dB SNR supports detection of weak return signals against noise, critical for automotive and industrial ranging applications. LVDS outputs feed an FPGA that performs pulse detection and time-stamping in real time.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا LTC2242IUP-10 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | LTC2242CUP-10#PBF | LTC2242IUP-12#PBF | LTC2241IUP-12#PBF | LTC2240IUP-10#PBF | LTC2221CUP#PBF | LTC2227IUH#PBF | LTC2142IUP-14#PBF |
|---|---|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | QFN-64 (9x9 mm) | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same | QFN-64 (9x9 mm) - same |
| Resolution | 10 bit | 10 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit |
| Sample Rate | 250 Msps | 250 Msps | 185 Msps | 185 Msps | 105 Msps | 135 Msps | 105 Msps | 80 Msps |
| Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 3.3 V | 3.3 V | 2.5 V |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
اہم امتیازی خصوصیات
- Highest sample rate in the LTC224x 10-bit QFN-64 family (بمقابلہLTC2240IUP-10#PBF)
- Industrial temperature grade included by default (بمقابلہLTC2242CUP-10#PBF)
- 1.2 GHz full-power analog bandwidth exceeds 12-bit peers (بمقابلہLTC2142IUP-14#PBF)
ڈیزائن نوٹس
Use a four-layer PCB stack-up with continuous ground plane on layer 2 directly beneath the LTC2242IUP-10. Solder the exposed pad (pin 64) to this ground plane with at least 9 thermal vias (0.3 mm drill, 1.0 mm pitch) to keep junction temperature below 125C at 740 mW dissipation. Keep analog input trace to pin 1 less than 5 mm and surround it with ground pours on both sides; route LVDS outputs with 100 ohm differential impedance and match lengths within 150 mil.
Bypass each VA pin (2, 21, 63) with a 2.2 uF X7R 0402 ceramic plus a 0.1 uF NP0 ceramic placed within 2 mm of the pin. Add a ferrite bead between the analog supply and the noisy digital 2.5 V rail to isolate the reference and sample-and-hold from digital switching noise. Per the Analog Devices LTC2242-10 datasheet, supply ripple above 10 mVpp at the encode clock frequency will couple into the analog input and degrade SNR by 1-2 dB.
Do not DC-couple the encode clock; AC-couple with 100 nF capacitors and engage the on-chip 100 ohm differential termination by leaving the ENC mode pin floating. Failing to engage termination causes severe reflections that corrupt clock edges and degrade SNR by up to 5 dB. Also avoid routing the encode clock in parallel with LVDS outputs - keep at least 3 line-widths of separation to prevent crosstalk into the digital data bus.
تعمیل کی معلومات
RoHS and REACH compliant per Analog Devices product page. PBF suffix denotes lead-free terminal finish. AEC-Q100 qualification is not applicable for this commercial/industrial ADC - no automotive Q-grade variant exists in this family.
