Datasheet LTC2239 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 10-Bit, 80Msps Low Noise 3V ADC |
| Seiten / Seite | 24 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 80Msps. Single 3V Supply (2.7V to … |
| Dateiformat / Größe | PDF / 573 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTIO. Sample Rate: 80Msps. Single 3V Supply (2.7V to 3.4V). Low Power: 211mW. 61.6dB SNR at 70MHz Input
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LTC2239 10-Bit, 80Msps Low Noise 3V ADC
U FEATURES DESCRIPTIO
■
Sample Rate: 80Msps
The LTC®2239 is a 10-bit 80Msps, low power 3V A/D ■
Single 3V Supply (2.7V to 3.4V)
converter designed for digitizing high frequency, wide ■
Low Power: 211mW
dynamic range signals. The LTC2239 is perfect for de- ■
61.6dB SNR at 70MHz Input
manding imaging and communications applications with ■
85dB SFDR at 70MHz Input
AC performance that includes 61.6dB SNR and 85dB ■ No Missing Codes SFDR for signals well beyond the Nyquist frequency. ■ Flexible Input: 1VP-P to 2VP-P Range DC specs include ±0.1LSB INL (typ), ±0.1LSB DNL (typ) ■ 575MHz Full Power Bandwidth S/H and ±0.5LSB INL, ±0.5LSB DNL over temperature. The ■ Clock Duty Cycle Stabilizer transition noise is a low 0.08LSB ■ Shutdown and Nap Modes RMS. ■ Pin Compatible Family A single 3V supply allows low power operation. A separate 125Msps: LTC2253 (12-Bit), LTC2251 (10-Bit) output supply allows the outputs to drive 0.5V to 3.6V 105Msps: LTC2252 (12-Bit), LTC2250 (10-Bit) logic. 80Msps: LTC2229 (12-Bit), LTC2239 (10-Bit) A single-ended CLK input controls converter operation. An 65Msps: LTC2228 (12-Bit), LTC2238 (10-Bit) optional clock duty cycle stabilizer allows high perfor- 40Msps: LTC2227 (12-Bit), LTC2237 (10-Bit) mance at full speed for a wide range of clock duty cycles. 25Msps: LTC2226 (12-Bit), LTC2236 (10-Bit) 10Msps: LTC2225 (12-Bit) , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ■ 32-Pin (5mm × 5mm) QFN Package
U APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO SNR vs Input Frequency, –1dB, 2V Range
REFH FLEXIBLE 65 REFL REFERENCE 64 OVDD 63 62 + D9 10-BIT • ANALOG 61 INPUT CORRECTION OUTPUT PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 60 – D0 SNR (dBFS) 59 OGND 58 57 CLOCK/DUTY 56 CYCLE CONTROL 55 0 50 100 150 200 2239 TA01 INPUT FREQUENCY (MHz) CLK 2239 G09 2239fa 1
U FEATURES DESCRIPTIO
■
Sample Rate: 80Msps
The LTC®2239 is a 10-bit 80Msps, low power 3V A/D ■
Single 3V Supply (2.7V to 3.4V)
converter designed for digitizing high frequency, wide ■
Low Power: 211mW
dynamic range signals. The LTC2239 is perfect for de- ■
61.6dB SNR at 70MHz Input
manding imaging and communications applications with ■
85dB SFDR at 70MHz Input
AC performance that includes 61.6dB SNR and 85dB ■ No Missing Codes SFDR for signals well beyond the Nyquist frequency. ■ Flexible Input: 1VP-P to 2VP-P Range DC specs include ±0.1LSB INL (typ), ±0.1LSB DNL (typ) ■ 575MHz Full Power Bandwidth S/H and ±0.5LSB INL, ±0.5LSB DNL over temperature. The ■ Clock Duty Cycle Stabilizer transition noise is a low 0.08LSB ■ Shutdown and Nap Modes RMS. ■ Pin Compatible Family A single 3V supply allows low power operation. A separate 125Msps: LTC2253 (12-Bit), LTC2251 (10-Bit) output supply allows the outputs to drive 0.5V to 3.6V 105Msps: LTC2252 (12-Bit), LTC2250 (10-Bit) logic. 80Msps: LTC2229 (12-Bit), LTC2239 (10-Bit) A single-ended CLK input controls converter operation. An 65Msps: LTC2228 (12-Bit), LTC2238 (10-Bit) optional clock duty cycle stabilizer allows high perfor- 40Msps: LTC2227 (12-Bit), LTC2237 (10-Bit) mance at full speed for a wide range of clock duty cycles. 25Msps: LTC2226 (12-Bit), LTC2236 (10-Bit) 10Msps: LTC2225 (12-Bit) , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ■ 32-Pin (5mm × 5mm) QFN Package
U APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO SNR vs Input Frequency, –1dB, 2V Range
REFH FLEXIBLE 65 REFL REFERENCE 64 OVDD 63 62 + D9 10-BIT • ANALOG 61 INPUT CORRECTION OUTPUT PIPELINED • INPUT S/H LOGIC DRIVERS ADC CORE • 60 – D0 SNR (dBFS) 59 OGND 58 57 CLOCK/DUTY 56 CYCLE CONTROL 55 0 50 100 150 200 2239 TA01 INPUT FREQUENCY (MHz) CLK 2239 G09 2239fa 1