Analog-to-Digital Converters range from 10-170 Msps.
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Press Release Summary:
Operating from 3.3 V supply, Series LTC2220 is comprised of 24 converters with 10, 12, or 14-bit resolution. At 630 mW, 12-bit Model LTC2224 operates at 135 Msps and comes in 7 x 7 mm QFN package. Suited for low power base station designs and optimized for undersampling, unit features 775 MHz bandwidth and achieves 77 dB SFDR up to 250 MHz input. Series offers selectable input range of ±0.5 or ±1 V and includes data ready output clock, as well as shutdown and nap modes.
Original Press Release:
High-Speed ADC Family Achieves Industry's Lowest Power Consumption While Maintaining Outstanding AC Performance
Industry's Lowest Power 12-Bit, 135Msps ADC Is First in Family from 10Msps to 170Msps
MILPITAS, CA - September 21, 2004 - A new family of high-speed analog-to-digital converters (ADCs) from Linear Technology combines outstanding AC performance with extremely low power, making them ideal for a range of wireless and cable communications systems. The LTC2220 family includes ADCs ranging from 10Msps up to 170Msps at 12-bit and 10-bit resolution, as well as 14-bit converters up to 80Msps. This new ADC family complements Linear Technology's previously announced LTC1750 family of 5V ADCs, which achieves unmatched AC performance. The LTC2220 family of 3.3V converters features significantly lower power than competing devices without sacrificing AC performance. These low power ADCs excel at undersampling, making them well suited for communications applications such as WCDMA cellular basestation transceivers, digital predistortion power amplifier linearization, and cable modem termination systems.
"With the introduction of this extensive family of high speed, low power ADCs, Linear Technology has demonstrated its commitment to this key product area," stated Bob Reay, Vice President and General Manager of Linear Technology's Mixed Signal Business Unit. "We have raised the performance bar by providing our customers with a broad family of ADCs that delivers both outstanding AC performance and low power."
The LTC2224, a 12-bit 135Msps ADC, exemplifies the industry-leading performance of the entire family. At just 630mW, in a 7mm x 7mm QFN package, it has the lowest power at this speed, is almost half the size of its nearest competitor, yet achieves over 67dB SNR up to 170MHz input - better than even higher-powered competitors. Further, the system footprint is small because few external bypasses are needed. Ideal for low power basestation designs and optimized for undersampling, the LTC2224 features a 775MHz bandwidth and achieves 77dB SFDR up to 250MHz input. Pin-compatible versions at sample rates of 105Msps and 80Msps feature even lower power. Pin-compatible 10-bit versions at each speed are also in full production.
The entire LTC2220 ADC family, which includes 24 devices, will be introduced by the fourth calendar quarter. Linear Technology's new ADC family features industry-leading AC performance at every sample rate, the lowest power of any such ADCs in the industry, and pin-compatibility, allowing easy migration from 10-bit to 12- or 14-bits, or to different sample rates. In addition to the LTC2224, Linear Technology is also announcing today five additional high-performance, low-power ADCs - LTC2222, LTC2223, LTC2234, LTC2232 and LTC2233. All are now in production and are packaged in 7 x 7mm QFN packages.
The following table provides an overview of the entire LTC2220 family.
Part Number Resolution Speed Power Availability Price (1k)
LTC2224 12-bit 135Msps 630mW Now $33.92
LTC2222 12-bit 105Msps 475mW Now $29.92
LTC2223 12-bit 80Msps 366mW Now $16.70
LTC2234 10-bit 135Msps 30mW Now $20.00
LTC2232 10-bit 105Msps 475mW Now $8.35
LTC2233 10-bit 80Msps 366mW Now $6.70
LTC2249 14-bit 80Msps --- Q4 CY 04 ---
LTC2248 14-bit 65Msps --- Q4 CY 04 ---
LTC2247 14-bit 40Msps --- Q4 CY 04 ---
LTC2246 14-bit 25Msps --- Q4 CY 04 ---
LTC2245 14-bit 10Msps --- Q4 CY 04 ---
LTC2220 12-bit 170Msps --- Q4 CY 04 ---
LTC2221 12-bit 135Msps --- Q4 CY 04 ---
LTC2229 12-bit 80Msps --- Q4 CY 04 ---
LTC2228 12-bit 65Msps --- Q4 CY 04 ---
LTC2227 12-bit 40Msps --- Q4 CY 04 ---
LTC2226 12-bit 25Msps --- Q4 CY 04 ---
LTC2225 12-bit 10Msps --- Q4 CY 04 ---
LTC2230 10-bit 170Msps --- Q4 CY 04 ---
LTC2231 10-bit 135Msps --- Q4 CY 04 ---
LTC2239 10-bit 80Msps --- Q4 CY 04 ---
LTC2238 10-bit 65Msps --- Q4 CY 04 ---
LTC2237 10-bit 40Msps --- Q4 CY 04 ---
LTC2236 10-bit 25Msps --- Q4 CY 04 ---
Summary of Features: LTC2220 Family
Sample Rate: 135Msps/105Msps/80Msps
68dB SNR up to 140MHz Input
80dB SFDR up to 170MHz Input
775MHz Full Power Bandwidth S/H
Tiny Board Footprint
Single 3.3V Supply
Low Power Dissipation: 630mW/475mW/366mW
Selectable Input Ranges: ±0.5V or ±1V
No Missing Codes
Optional Clock Duty Cycle Stabilizer
Shutdown and Nap Modes
Data Ready Output Clock
Pin Compatible Family
135Msps: LTC2224 (12-Bit), LTC2234 (10-Bit)
105Msps: LTC2222 (12-Bit), LTC2232 (10-Bit)
80Msps: LTC2223 (12-Bit), LTC2233 (10-Bit)
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems.
