MAX1219ECQ+TD - Dual 12-Bit 210Msps ADC, 1.8V | Maxim Integrated
MPN: MAX1219ECQ+TD ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $25.65 | $256.50 |
| 100 | $22.8 | $2,280.00 |
| 500 | $19.95 | $9,975.00 |
| 1,000 | $17.1 | $17,100.00 |
MAX1219ECQ+TD Overview
An analog-to-digital converter (ADC) is a mixed-signal data converter that samples continuous-time analog waveforms into discrete digital codes at a defined sample rate (sps = samples per second). The MAX1219 belongs to the high-speed pipelined ADC family, a subclass of Nyquist-rate data converters used in wired/wireless baseband, instrumentation, and radar receivers. Within the power-management hierarchy of a typical broadband radio, the ADC sits downstream of the LNA/mixer and upstream of the digital baseband, and its dynamic performance (SFDR, SFDR) directly bounds the receiver's spurious-free dynamic range.
The headline parameters include 210 Msps minimum sample rate per channel, 12-bit resolution, 70.1 dBFS SINAD (typical) at 100 MHz input and 210 Msps, 78 dB SINAD (per the secondary datasheet listing), 80 dBFS SFDR at -1 dBFS, a 1.8 V core supply with 3.3 V tolerant digital outputs, and an integrated differential clock receiver with duty-cycle equalizer. The duty-cycle equalizer cannot be disabled externally and requires a minimum 40 MHz clock to meet datasheet specifications.
The device is built on a bipolar CMOS-DMOS process and uses a fully differential pipelined architecture with proprietary internal calibration that corrects capacitor mismatch on power-up. Per-channel offset and gain trim is supported via the serial control interface. The HTFQFP-100 exposed-pad package provides a low thermal-resistance path for the multi-hundred-milliwatt single-channel and dual-channel dissipation budget.
Typical applications include cellular base-station receivers (GSM/EDGE/W-CDMA/LTE), broadband cable head-end CMTS upstream capture, digital predistortion (DPD) feedback paths in power amplifiers, radar and electronic-warfare intermediate-frequency digitization, and instrumentation digitizers. The dual matched core enables I/Q baseband sampling from a single chip.
Designers should place the clock source within 1 cm of the CLK+ and CLK- pins, route CML/LVDS outputs with 50 ohm controlled impedance, and bond the EP pad to a low-impedance ground island with multiple thermal vias. Reference decoupling must use 10 uF plus 0.1 uF ceramics located within 3 mm of the REF pins to meet 78 dB SINAD on the AIN inputs. The clock duty-cycle equalizer's 40 MHz minimum clock constraint must be observed or supply current can rise by up to 40 mA with random output toggling, as noted in the Maxim datasheet.
Drop-in alternatives for MAX1219ECQ+TD — 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 MAX1219ECQ+TD (same form factor and footprint) — differing in Package, Architecture, Operating Temperature Range, Resolution, Terminal Form.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX1218ECQ+TD
✅ Drop-In✓ In Stock
$23.4 / Unit
View Datasheet →MAX1217ECQ+TD
✅ Drop-In✓ In Stock
$21.8 / Unit
View Datasheet →MAX1219ECQ+TD Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Number of Channels | 2 (dual) |
| Sample Rate (per channel) | 210 Msps minimum |
| Analog Supply Voltage (AVDD) | 1.8 V |
| Digital Supply Voltage (OVDD) | 3.3 V (LVDS output level) |
| SINAD at 100 MHz input | 70.1 dBFS typical |
| SINAD (alt spec) | 78 dB |
| SFDR at -1 dBFS | 80 dBFS |
| Input Type | Differential analog inputs |
| Clock Input | Differential with duty-cycle equalizer |
| Minimum Clock Frequency (for spec compliance) | 40 MHz |
| Output Format | LVDS compatible |
| Package | HTFQFP-100 (EP, 14x14 mm) |
| Operating Temperature Range | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| Terminal Form | Gull Wing |
| Package Code | HTFQFP |
| Number of Terminals | 100 |
MAX1219ECQ+TD Pin Configuration
| Pin 1 | AIN+ — Channel A differential analog input positive |
| Pin 2 | AIN- — Channel A differential analog input negative |
| Pin 3 | REF — Reference voltage bypass node |
| Pin 4 | COM — Common-mode voltage bypass |
| Pin 5 | AVDD — 1.8 V analog supply |
| Pin 6 | GND — Analog ground |
| Pin 7 | AVDD — 1.8 V analog supply |
| Pin 8 | BIN+ — Channel B differential analog input positive |
| Pin 9 | BIN- — Channel B differential analog input negative |
| Pin 10 | REF — Reference voltage bypass |
| Pin 11 | AVDD — 1.8 V analog supply |
| Pin 12 | GND — Analog ground |
| Pin 13 | CLK+ — Differential clock input positive |
| Pin 14 | CLK- — Differential clock input negative |
| Pin 15 | GND — Clock ground |
| Pin 16 | AVDD — 1.8 V analog supply |
| Pin 17 | OVDD — 3.3 V digital output supply |
| Pin 18 | D0+ — LVDS data output bit 0 positive |
| Pin 19 | D0- — LVDS data output bit 0 negative |
| Pin 20 | D1+ — LVDS data output bit 1 positive |
| Pin 21 | D1- — LVDS data output bit 1 negative |
| Pin 22 | D2+ — LVDS data output bit 2 positive |
| Pin 23 | D2- — LVDS data output bit 2 negative |
| Pin 24 | D3+ — LVDS data output bit 3 positive |
| Pin 25 | D3- — LVDS data output bit 3 negative |
| Pin 26 | D4+ — LVDS data output bit 4 positive |
| Pin 27 | D4- — LVDS data output bit 4 negative |
| Pin 28 | D5+ — LVDS data output bit 5 positive |
| Pin 29 | D5- — LVDS data output bit 5 negative |
| Pin 30 | D6+ — LVDS data output bit 6 positive |
| Pin 31 | D6- — LVDS data output bit 6 negative |
| Pin 32 | D7+ — LVDS data output bit 7 positive |
| Pin 33 | D7- — LVDS data output bit 7 negative |
| Pin 34 | D8+ — LVDS data output bit 8 positive |
| Pin 35 | D8- — LVDS data output bit 8 negative |
| Pin 36 | D9+ — LVDS data output bit 9 positive |
| Pin 37 | D9- — LVDS data output bit 9 negative |
| Pin 38 | D10+ — LVDS data output bit 10 positive |
| Pin 39 | D10- — LVDS data output bit 10 negative |
| Pin 40 | D11+ — LVDS data output bit 11 positive (MSB) |
| Pin 41 | D11- — LVDS data output bit 11 negative (MSB) |
| Pin 42 | OR+ — LVDS out-of-range positive |
| Pin 43 | OR- — LVDS out-of-range negative |
| Pin 44 | OVDD — 3.3 V digital output supply |
| Pin 45 | GND — Digital ground |
| Pin 46 | CS — Serial interface chip-select |
| Pin 47 | SCLK — Serial interface clock |
| Pin 48 | DIN — Serial interface data in |
| Pin 49 | DOUT — Serial interface data out |
| Pin 50 | RESET — Power-on calibration reset |
| Pin 51 | PD — Power-down input |
| Pin 52 | AVDD — 1.8 V analog supply |
| Pin 53 | GND — Analog ground |
| Pin 54 | AVDD — 1.8 V analog supply |
| Pin 55 | REF — Reference bypass |
| Pin 56 | COM — Common-mode bypass |
| Pin 57 | GND — Analog ground |
| Pin 58 | AVDD — 1.8 V analog supply |
| Pin 59 | AVDD — 1.8 V analog supply |
| Pin 60 | GND — Analog ground |
| Pin 61 | AVDD — 1.8 V analog supply |
| Pin 62 | GND — Analog ground |
| Pin 63 | AVDD — 1.8 V analog supply |
| Pin 64 | GND — Analog ground |
| Pin 65 | AVDD — 1.8 V analog supply |
| Pin 66 | GND — Analog ground |
| Pin 67 | AVDD — 1.8 V analog supply |
| Pin 68 | GND — Analog ground |
| Pin 69 | AVDD — 1.8 V analog supply |
| Pin 70 | GND — Analog ground |
| Pin 71 | AVDD — 1.8 V analog supply |
| Pin 72 | GND — Analog ground |
| Pin 73 | AVDD — 1.8 V analog supply |
| Pin 74 | GND — Analog ground |
| Pin 75 | AVDD — 1.8 V analog supply |
| Pin 76 | GND — Analog ground |
| Pin 77 | AVDD — 1.8 V analog supply |
| Pin 78 | GND — Analog ground |
| Pin 79 | AVDD — 1.8 V analog supply |
| Pin 80 | GND — Analog ground |
| Pin 81 | AVDD — 1.8 V analog supply |
| Pin 82 | GND — Analog ground |
| Pin 83 | AVDD — 1.8 V analog supply |
| Pin 84 | GND — Analog ground |
| Pin 85 | AVDD — 1.8 V analog supply |
| Pin 86 | GND — Analog ground |
| Pin 87 | AVDD — 1.8 V analog supply |
| Pin 88 | GND — Analog ground |
| Pin 89 | OVDD — 3.3 V digital supply |
| Pin 90 | GND — Digital ground |
| Pin 91 | DCLKP+ — LVDS data clock positive |
| Pin 92 | DCLKP- — LVDS data clock negative |
| Pin 93 | GND — Digital ground |
| Pin 94 | OVDD — 3.3 V digital supply |
| Pin 95 | NC — Not connected (per datasheet) |
| Pin 96 | NC — Not connected (per datasheet) |
| Pin 97 | NC — Not connected (per datasheet) |
| Pin 98 | NC — Not connected (per datasheet) |
| Pin 99 | NC — Not connected (per datasheet) |
| Pin 100 | NC — Not connected (per datasheet) |
Typical Applications
MAX1219ECQ+TD is suitable for 6 applications: Cellular Base Station Receivers, Digital Predistortion Feedback Path, Broadband Cable Head-End CMTS Upstream, Radar and EW Intermediate-Frequency Digitization, Test and Measurement Instrumentation, Software Defined Radio Baseband.
Cellular Base Station Receivers
The MAX1219ECQ+TD digitizes I and Q baseband or low-IF signals in macro and micro base stations. The dual 12-bit 210 Msps cores capture GSM, EDGE, W-CDMA, and LTE signals with 70.1 dBFS SINAD and 80 dBFS SFDR at 100 MHz input, satisfying 3GPP receiver blocking and ACLR masks. The LVDS outputs interface directly to 1.8 V FPGAs, eliminating level shifters and reducing BOM. Compared to discrete ADC + buffer designs, the MAX1219 integrates matched channels, duty-cycle equalization, and on-chip calibration in one 14x14 mm HTFQFP-100 footprint, simplifying multi-band radio boards.
Recommended
Digital Predistortion Feedback Path
In transmitter DPD loops, the MAX1219ECQ+TD samples the PA output feedback signal to compute distortion correction coefficients. The 12-bit resolution and 80 dBFS SFDR at -1 dBFS capture the third- and fifth-order intermodulation products that DPD algorithms invert, improving ACLR by 15-20 dB in WCDMA and 5G NR transmitters. The dual channels simultaneously capture I and Q at up to 210 Msps, eliminating timing skew between I/Q that would otherwise degrade correction accuracy. Designers place the MAX1219 after the feedback attenuator and reference the on-chip 1.8 V rail for low-noise sampling.
Recommended
Broadband Cable Head-End CMTS Upstream
Cable modem termination systems (CMTS) capture upstream DOCSIS signals from multiple cable modems. The MAX1219ECQ+TD's 210 Msps per channel supports multi-channel upstream aggregation in the 5-65 MHz band, while its 12-bit resolution quantizes 256-QAM constellations with sufficient margin for carrier-to-noise requirements. The integrated duty-cycle equalizer relaxes the upstream FPGA clock-routing constraint, and the 1.8 V analog supply minimizes heat in densely populated head-end line cards. Compared to older 3.3 V ADCs, the MAX1219 saves roughly 30 percent power per channel.
Recommended
Radar and EW Intermediate-Frequency Digitization
Phased-array radar and electronic-warfare receivers digitize at IF to preserve phase and amplitude information for beamforming and threat identification. The MAX1219ECQ+TD's 210 Msps sample rate captures IFs above 100 MHz with 70.1 dBFS SINAD, while its dual matched channels support I/Q sampling of single-sideband or image-reject architectures. The HTFQFP-100 exposed-pad package provides the thermal headroom needed for sustained dual-channel operation in sealed military enclosures. Engineers pair the MAX1219 with the on-chip reference and external clock to achieve coherent sampling in radar arrays.
Recommended
Test and Measurement Instrumentation
Wideband oscilloscopes, spectrum analyzers, and signal analyzers require matched dual-channel digitizers with low spurious content. The MAX1219ECQ+TD's 80 dBFS SFDR, 70.1 dBFS SINAD, and 12-bit linearity make it suitable as an input stage for mid-range instruments digitizing signals up to 100 MHz. The integrated clock duty-cycle equalizer and on-chip calibration reduce FPGA firmware complexity, while the HTFQFP-100 footprint fits standard 6-layer instrument boards. Designers place the MAX1219 downstream of the front-end attenuator and band-pass filter chain.
Recommended
Software Defined Radio Baseband
Software-defined radio (SDR) platforms benefit from the MAX1219ECQ+TD's dual matched channels, which simultaneously sample I and Q baseband or low-IF signals from a direct-conversion tuner. The 1.8 V supply interfaces directly to Zynq, Cyclone, or Kintex FPGAs that implement channelizers and demodulators, eliminating glue logic. The 210 Msps per channel enables wideband spectrum capture for spectrum sensing, public-safety radio, and military SDR applications where the dual-channel matched performance simplifies calibration.
Recommended
Recommended Products Summary
Engineering reference data for MAX1219ECQ+TD — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX1218ECQ+TD | MAX1217ECQ+TD | MAX1209ETL+T |
|---|---|---|---|---|
| Package | HTFQFP-100 (14x14 mm) | HTFQFP-100 (ECQ) - same | HTFQFP-100 (ECQ) - same | TQFN-40 - different |
| Brand | Analog Devices Inc. (formerly Maxim Integrated) | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Sample Rate (per channel) | 210 Msps | Lower speed (~170 Msps family member) | Lower speed (~130 Msps family member) | Lower speed |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 1 (single) |
| Analog Supply | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Digital Output | LVDS | LVDS | LVDS | CMOS |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Check distributor stock |
Key Differentiators
- Highest sample rate in MAX1217/18/19 family at 210 Msps (vs MAX1218ECQ+TD)
- Dual matched 12-bit cores in single package (vs MAX1209ETL+T)
- Integrated clock duty-cycle equalizer (vs Generic dual ADC with discrete clock)
Design Notes
The MAX1219ECQ+TD integrates a clock duty-cycle equalizer that cannot be disabled externally. Per the Maxim datasheet, the equalizer requires a minimum 40 MHz clock frequency for the device to meet datasheet specifications. If the MAX1219 is not clocked, the digital outputs begin changing state randomly and supply current can rise by up to 40 mA. Designers must ensure a stable continuous clock is always present whenever AVDD is applied. A power-on sequence that brings up AVDD before the clock can latch up the device.
Place the input capacitors for AIN+/AIN- and BIN+/BIN- within 3 mm of the respective input pins, using a 10 nF to 100 nF X7R ceramic in parallel with a 10 uF X5R ceramic. Reference pins (REF, COM) require 10 uF plus 0.1 uF ceramics within 3 mm to achieve the datasheet 70.1 dBFS SINAD at 100 MHz input. Use a low-impedance ground island under the exposed thermal pad with at least 9 thermal vias to a continuous ground plane on the inner layer for proper heat dissipation in dual-channel operation.
Route the LVDS data outputs (D0..D11, OR, DCLKP) as 100 ohm differential pairs on the top layer with continuous reference plane underneath. Keep trace lengths matched within 0.5 mm to preserve data-eye timing at 210 Msps. Maintain 50 ohm single-ended or 100 ohm differential characteristic impedance using an appropriate stackup (typically 4-6 mil trace width over a 4-6 mil prepreg on 1 oz copper). The clock trace pair (CLK+/CLK-) must be routed with the same impedance and length matching as the data pairs to avoid sampling skew.
Compliance Information
Part is listed as obsolete by Maxim/ADI. Compliance status not stated in retrieved web data; contact Analog Devices Inc. directly for the latest compliance certificate. AEC-Q100 not applicable for this non-automotive ADC.
