Dual ADCs achieve 100 MHz, 110 dB channel isolation.
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Press Release Summary:
Consuming 445 mW, 14-bit, 80 Msps LTC2299 provides -110 dB crosstalk for channel-to-channel isolation. It achieves 73 dB Signal-to-Noise Ratio (SNR) and 85 dB Spurious Free Dynamic Range (SFDR) @ 70 MHz. In higher intermediate frequencies, product achieves 72.6 dB SNR and 80 dB SFDR up to 140 MHz. Family also includes 10-, 12-, or 14-bit resolution models from 10-80 MSps that consume 120-422 mW. All models come in 64-pin, 9 x 9 mm QFN package.
Original Press Release:
Dual 14-Bit, 80Msps ADC Achieves 100MHz 110dB Channel Isolation Performance at Only 445mW Total Power Consumption
Latest Announcement of New Devices in High Speed, Low Power ADC Family
Milpitas, CA - March 10, 2005 - Linear Technology Corporation introduces a family of low power, high speed dual ADCs that provide -110dB crosstalk for excellent channel-to-channel isolation, while achieving extremely low power consumption. At just 445mW, about 222mW per channel, the 14-bit, 80Msps LTC2299 consumes less power than even slower competitors. The device is ideal for base station applications, achieving 73dB Signal-to-Noise Ratio (SNR) and 85dB Spurious Free Dynamic Range (SFDR) at 70MHz. For higher intermediate frequencies (IFs), it excels with 72.6dB SNR and 80dB SFDR up to 140MHz. The LTC2299 is one of 14 new dual ADCs introduced today by Linear Technology, as part of its expanding family of low power, high speed ADCs, which range from 10Msps to 80Msps at 10-bit, 12-bit and 14-bit resolution (see following table). In addition to base station applications, these low power dual ADCs are well suited for other communication systems and high-end medical imaging equipment.
The LTC2299's small 9mm x 9mm QFN package makes this dual ADC ideal for low power single carrier base stations where the matching performance of the in-phase (I) and quadrature (Q) channels is critical. Crosstalk between channels stays below -110dB from low input frequencies all the way up to 100MHz. The system footprint of the LTC2299 is small since few external bypass capacitors are needed. Optimized for undersampling with wide bandwidth, it also suits multi-carrier base station designs that require multiple receive channels in a small area. Pin-compatible versions at sample rates of 65Msps, 40Msps, 25Msps and 10Msps feature even lower power - as low as 60mW per channel. Pin-compatible 12-bit and 10-bit versions at each speed are also in full production.
In addition to the 14 new ADCs introduced today, Linear Technology is already shipping 24 previously introduced single channel ADCs. Linear Technology's new ADC family features industry-leading AC performance at every sample rate, extremely low power consumption, and pin-compatibility, allowing easy migration from 10-bit to 12- or 14-bits, or to different sample rates. All 14 dual ADCs just announced are now in production and are packaged in 9mm x 9mm, 64-pin QFN packages.
The following table provides an overview of the entire LTC2299 family.
Part Number Resolution Speed Power / Ch. Price (1k)
LTC2299 14-bit 80Msps 222mW $37.50
LTC2298 14-bit 65Msps 205mW $35.03
LTC2297 14-bit 40Msps 120mW $27.38
LTC2296 14-bit 25Msps 75mW $18.75
LTC2295 14-bit 10Msps 60mW $17.00
LTC2294 12-bit 80Msps 211mW $25.05
LTC2293 12-bit 65Msps 205mW $18.12
LTC2292 12-bit 40Msps 120mW $11.88
LTC2291 12-bit 25Msps 75mW $11.25
LTC2290 12-bit 10Msps 60mW $10.00
LTC2289 10-bit 80Msps 211mW $10.05
LTC2288 10-bit 65Msps 205mW $7.50
LTC2287 10-bit 40Msps 120mW $7.20
LTC2286 10-bit 25Msps 75mW $5.25
Summary of Features: LTC2299 Family
Sample Rate: 80Msps/65Msps/40Msps/25Msps/10Msps
73dB SNR up to 70MHz Input
85dB SFDR up to 70MHz Input
110dB Channel Isolation at 30MHz
575MHz Full Power Bandwidth S/H
Multiplexed or Separate Data Bus
Single 3V Supply (2.7V to 3.4V)
Low Power Dissipation: 445mW/410mW/240mW/150mW/120mW
Selectable Input Ranges: ±0.5V or ±1V
Clock Duty Cycle Stabilizer
Shutdown and Nap Modes
64-pin, 9mm x 9mm QFN Package
Pin Compatible Family
- 80Msps: LTC2299 (14-Bit), LTC2294 (12-Bit), LTC2289 (10-Bit)
- 65Msps: LTC2298 (14-Bit), LTC2293 (12-Bit), LTC2288 (10-Bit)
- 40Msps: LTC2297 (14-Bit), LTC2292 (12-Bit), LTC2287 (10-Bit)
- 25Msps: LTC2296 (14-Bit), LTC2291 (12-Bit), LTC2286 (10-Bit)
- 10Msps: LTC2295 (14-Bit), LTC2290 (12-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.
Note: LT and LTC are registered trademarks of Linear Technology Corp.
Worldwide Contacts
North America
John Hamburger
Tel: (408) 432-1900 ext. 2419
jhamburger@linear.com
Doug Dickinson
Tel: (408) 432 1900 ext. 2233
ddickinson@linear.com
China (PRC)
Fanny Lau
Tel: 852-2428-0303
flau@linear.com
Angela Ao
Tel: (8610)6522 8081
angela@eba.com.cn
Germany
Ralf Stegmann
Tel: +49 (0) 7131/9234-0
ralf@ezwire.com
Japan
Kazuto Takahashi
Tel: 81-3-5226-7291
takahashi@linear-tech.co.jp
UK & Scandinavia
Alan Timmins
Tel: +44-1-252-629937
a.timmins@ntlworld.com
Korea
Desiree Park
Tel: +82 (0) 2812 1144
desiree@ezwire.com
