MAX1219ECQ+TD - Dual 12-Bit 210Msps ADC, 1.8V | Maxim Integrated
MPN: MAX1219ECQ+TD ✗ Cuối đờiMAX1219ECQ+TD Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho MAX1219ECQ+TD — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX1219ECQ+TD (cùng hình factor và footprint) — khác nhau ở Package, Architecture, Operating Temperature Range, Resolution, Terminal Form.
MAX1218ECQ+TD
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1217ECQ+TD
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1219ECQ+TD Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 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 |
| Hộp | HTFQFP-100 (EP, 14x14 mm) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (industrial) |
| Kiểu lắp đặt | Surface Mount |
| Terminal Form | Gull Wing |
| Package Code | HTFQFP |
| Number of Terminals | 100 |
Cấu hình chân MAX1219ECQ+TD
| Chân 1 | AIN+ — Channel A differential analog input positive |
| Chân 2 | AIN- — Channel A differential analog input negative |
| Chân 3 | REF — Reference voltage bypass node |
| Chân 4 | COM — Common-mode voltage bypass |
| Chân 5 | AVDD — 1.8 V analog supply |
| Chân 6 | GND — Analog ground |
| Chân 7 | AVDD — 1.8 V analog supply |
| Chân 8 | BIN+ — Channel B differential analog input positive |
| Chân 9 | BIN- — Channel B differential analog input negative |
| Chân 10 | REF — Reference voltage bypass |
| Chân 11 | AVDD — 1.8 V analog supply |
| Chân 12 | GND — Analog ground |
| Chân 13 | CLK+ — Differential clock input positive |
| Chân 14 | CLK- — Differential clock input negative |
| Chân 15 | GND — Clock ground |
| Chân 16 | AVDD — 1.8 V analog supply |
| Chân 17 | OVDD — 3.3 V digital output supply |
| Chân 18 | D0+ — LVDS data output bit 0 positive |
| Chân 19 | D0- — LVDS data output bit 0 negative |
| Chân 20 | D1+ — LVDS data output bit 1 positive |
| Chân 21 | D1- — LVDS data output bit 1 negative |
| Chân 22 | D2+ — LVDS data output bit 2 positive |
| Chân 23 | D2- — LVDS data output bit 2 negative |
| Chân 24 | D3+ — LVDS data output bit 3 positive |
| Chân 25 | D3- — LVDS data output bit 3 negative |
| Chân 26 | D4+ — LVDS data output bit 4 positive |
| Chân 27 | D4- — LVDS data output bit 4 negative |
| Chân 28 | D5+ — LVDS data output bit 5 positive |
| Chân 29 | D5- — LVDS data output bit 5 negative |
| Chân 30 | D6+ — LVDS data output bit 6 positive |
| Chân 31 | D6- — LVDS data output bit 6 negative |
| Chân 32 | D7+ — LVDS data output bit 7 positive |
| Chân 33 | D7- — LVDS data output bit 7 negative |
| Chân 34 | D8+ — LVDS data output bit 8 positive |
| Chân 35 | D8- — LVDS data output bit 8 negative |
| Chân 36 | D9+ — LVDS data output bit 9 positive |
| Chân 37 | D9- — LVDS data output bit 9 negative |
| Chân 38 | D10+ — LVDS data output bit 10 positive |
| Chân 39 | D10- — LVDS data output bit 10 negative |
| Chân 40 | D11+ — LVDS data output bit 11 positive (MSB) |
| Chân 41 | D11- — LVDS data output bit 11 negative (MSB) |
| Chân 42 | OR+ — LVDS out-of-range positive |
| Chân 43 | OR- — LVDS out-of-range negative |
| Chân 44 | OVDD — 3.3 V digital output supply |
| Chân 45 | GND — Digital ground |
| Chân 46 | CS — Serial interface chip-select |
| Chân 47 | SCLK — Serial interface clock |
| Chân 48 | DIN — Serial interface data in |
| Chân 49 | DOUT — Serial interface data out |
| Chân 50 | RESET — Power-on calibration reset |
| Chân 51 | PD — Power-down input |
| Chân 52 | AVDD — 1.8 V analog supply |
| Chân 53 | GND — Analog ground |
| Chân 54 | AVDD — 1.8 V analog supply |
| Chân 55 | REF — Reference bypass |
| Chân 56 | COM — Common-mode bypass |
| Chân 57 | GND — Analog ground |
| Chân 58 | AVDD — 1.8 V analog supply |
| Chân 59 | AVDD — 1.8 V analog supply |
| Chân 60 | GND — Analog ground |
| Chân 61 | AVDD — 1.8 V analog supply |
| Chân 62 | GND — Analog ground |
| Chân 63 | AVDD — 1.8 V analog supply |
| Chân 64 | GND — Analog ground |
| Chân 65 | AVDD — 1.8 V analog supply |
| Chân 66 | GND — Analog ground |
| Chân 67 | AVDD — 1.8 V analog supply |
| Chân 68 | GND — Analog ground |
| Chân 69 | AVDD — 1.8 V analog supply |
| Chân 70 | GND — Analog ground |
| Chân 71 | AVDD — 1.8 V analog supply |
| Chân 72 | GND — Analog ground |
| Chân 73 | AVDD — 1.8 V analog supply |
| Chân 74 | GND — Analog ground |
| Chân 75 | AVDD — 1.8 V analog supply |
| Chân 76 | GND — Analog ground |
| Chân 77 | AVDD — 1.8 V analog supply |
| Chân 78 | GND — Analog ground |
| Chân 79 | AVDD — 1.8 V analog supply |
| Chân 80 | GND — Analog ground |
| Chân 81 | AVDD — 1.8 V analog supply |
| Chân 82 | GND — Analog ground |
| Chân 83 | AVDD — 1.8 V analog supply |
| Chân 84 | GND — Analog ground |
| Chân 85 | AVDD — 1.8 V analog supply |
| Chân 86 | GND — Analog ground |
| Chân 87 | AVDD — 1.8 V analog supply |
| Chân 88 | GND — Analog ground |
| Chân 89 | OVDD — 3.3 V digital supply |
| Chân 90 | GND — Digital ground |
| Chân 91 | DCLKP+ — LVDS data clock positive |
| Chân 92 | DCLKP- — LVDS data clock negative |
| Chân 93 | GND — Digital ground |
| Chân 94 | OVDD — 3.3 V digital supply |
| Chân 95 | NC — Not connected (per datasheet) |
| Chân 96 | NC — Not connected (per datasheet) |
| Chân 97 | NC — Not connected (per datasheet) |
| Chân 98 | NC — Not connected (per datasheet) |
| Chân 99 | NC — Not connected (per datasheet) |
| Chân 100 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
MAX1219ECQ+TD phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX1219ECQ+TD — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Highest sample rate in MAX1217/18/19 family at 210 Msps (vsMAX1218ECQ+TD)
- Dual matched 12-bit cores in single package (vsMAX1209ETL+T)
- Integrated clock duty-cycle equalizer (vsGeneric dual ADC with discrete clock)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
