Datasheet LTC2248, LTC2247, LTC2246 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 14-Bit, 65Msps Low Power 3V ADCs |
| Pages / Page | 24 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 65Msps/40Msps/25Msps. Single 3V Supply … |
| File Format / Size | PDF / 795 Kb |
| Document Language | English |
FEATURES. DESCRIPTIO. Sample Rate: 65Msps/40Msps/25Msps. Single 3V Supply (2.7V to 3.4V). Low Power: 205mW/120mW/75mW. 74.3dB SNR
Model Line for this Datasheet
- LTC2246CUH#PBF LTC2246CUH#PBF LTC2246CUH#TRPBF LTC2246CUH#TRPBF LTC2246IUH#PBF LTC2246IUH#PBF LTC2246IUH#TRPBF LTC2246IUH#TRPBF
Text Version of Document
LTC2248/LTC2247/LTC2246 14-Bit, 65/40/25Msps Low Power 3V ADCs
U FEATURES DESCRIPTIO
■
Sample Rate: 65Msps/40Msps/25Msps
The LTC®2248/LTC2247/LTC2246 are 14-bit 65Msps/ ■
Single 3V Supply (2.7V to 3.4V)
40Msps/25Msps, low power 3V A/D converters designed ■
Low Power: 205mW/120mW/75mW
for digitizing high frequency, wide dynamic range signals. ■
74.3dB SNR
The LTC2248/LTC2247/LTC2246 are perfect for demand- ■
90dB SFDR
ing imaging and communications applications with AC ■ No Missing Codes performance that includes 74.3dB SNR and 90dB SFDR ■ Flexible Input: 1VP-P to 2VP-P Range for signals at the Nyquist frequency. ■ 575MHz Full Power Bandwidth S/H DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and ■ Clock Duty Cycle Stabilizer no missing codes over temperature. The transition noise ■ Shutdown and Nap Modes is a low 1LSB ■ Pin Compatible Family RMS. 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit) output supply allows the outputs to drive 0.5V to 3.6V 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit) logic. 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit) mance at full speed for a wide range of clock duty cycles. 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) ■ 32-Pin (5mm × 5mm) QFN Package , LTC and LT are registered trademarks of Linear Technology Corporation.
U
All other trademarks are the property of their respective owners.
APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2248: SNR vs Input Frequency, –1dB, 2V Range, 65Msps
REFH FLEXIBLE 75 REFL REFERENCE OVDD 74 + D13 14-BIT • ANALOG INPUT CORRECTION OUTPUT PIPELINED • 73 INPUT S/H LOGIC DRIVERS ADC CORE • – D0 SNR (dBFS) 72 OGND 71 CLOCK/DUTY CYCLE CONTROL 70 0 50 100 150 200 2249 TA01a INPUT FREQUENCY (MHZ) 2249 TAO1b CLK 224876fa 1
U FEATURES DESCRIPTIO
■
Sample Rate: 65Msps/40Msps/25Msps
The LTC®2248/LTC2247/LTC2246 are 14-bit 65Msps/ ■
Single 3V Supply (2.7V to 3.4V)
40Msps/25Msps, low power 3V A/D converters designed ■
Low Power: 205mW/120mW/75mW
for digitizing high frequency, wide dynamic range signals. ■
74.3dB SNR
The LTC2248/LTC2247/LTC2246 are perfect for demand- ■
90dB SFDR
ing imaging and communications applications with AC ■ No Missing Codes performance that includes 74.3dB SNR and 90dB SFDR ■ Flexible Input: 1VP-P to 2VP-P Range for signals at the Nyquist frequency. ■ 575MHz Full Power Bandwidth S/H DC specs include ±1LSB INL (typ), ±0.5LSB DNL (typ) and ■ Clock Duty Cycle Stabilizer no missing codes over temperature. The transition noise ■ Shutdown and Nap Modes is a low 1LSB ■ Pin Compatible Family RMS. 125Msps: LTC2253 (12-Bit), LTC2255 (14-Bit) A single 3V supply allows low power operation. A separate 105Msps: LTC2252 (12-Bit), LTC2254 (14-Bit) output supply allows the outputs to drive 0.5V to 3.6V 80Msps: LTC2229 (12-Bit), LTC2249 (14-Bit) logic. 65Msps: LTC2228 (12-Bit), LTC2248 (14-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2227 (12-Bit), LTC2247 (14-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2226 (12-Bit), LTC2246 (14-Bit) mance at full speed for a wide range of clock duty cycles. 10Msps: LTC2225 (12-Bit), LTC2245 (14-Bit) ■ 32-Pin (5mm × 5mm) QFN Package , LTC and LT are registered trademarks of Linear Technology Corporation.
U
All other trademarks are the property of their respective owners.
APPLICATIO S
■ Wireless and Wired Broadband Communication ■ Imaging Systems ■ Ultrasound ■ Spectral Analysis ■ Portable Instrumentation
U TYPICAL APPLICATIO LTC2248: SNR vs Input Frequency, –1dB, 2V Range, 65Msps
REFH FLEXIBLE 75 REFL REFERENCE OVDD 74 + D13 14-BIT • ANALOG INPUT CORRECTION OUTPUT PIPELINED • 73 INPUT S/H LOGIC DRIVERS ADC CORE • – D0 SNR (dBFS) 72 OGND 71 CLOCK/DUTY CYCLE CONTROL 70 0 50 100 150 200 2249 TA01a INPUT FREQUENCY (MHZ) 2249 TAO1b CLK 224876fa 1
