Datasheet LTC1409 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | 12-Bit, 800ksps Sampling A/D Converter with Shutdown |
| Seiten / Seite | 20 / 1 — FEATU. DESCRIPTIO. Sample Rate: 800ksps. Power Dissipation: 80mW. 72.5dB … |
| Dateiformat / Größe | PDF / 356 Kb |
| Dokumentensprache | Englisch |
FEATU. DESCRIPTIO. Sample Rate: 800ksps. Power Dissipation: 80mW. 72.5dB S/(N + D) and 86dB THD at Nyquist. No Pipeline Delay
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LTC1409 12-Bit, 800ksps Sampling A/D Converter with Shutdown
U FEATU S RE DESCRIPTIO
■
Sample Rate: 800ksps
The LTC®1409 is a 1µs, 800ksps, sampling 12-bit A/D ■
Power Dissipation: 80mW
converter that draws only 80mW from ±5V supplies. This ■
72.5dB S/(N + D) and 86dB THD at Nyquist
easy-to-use device includes a high dynamic range sample- ■
No Pipeline Delay
and-hold and a precision reference. Two digitally selectable ■ Nap (4mW) and Sleep (10µW) Shutdown Modes power Shutdown modes provide flexibility for low power ■ Operates with Internal 15ppm/°C Reference systems. or External Reference The LTC1409 full-scale input range is ±2.5V. Maximum ■ True Differential Inputs Reject Common Mode Noise DC specs include ±1LSB INL and ±1LSB DNL over tem- ■ 20MHz Full Power Bandwidth Sampling perature. Outstanding AC performance includes 72.5dB ■ ±2.5V Bipolar Input Range S/(N + D) at the Nyquist input frequency of 400kHz. ■ 28-Pin SO Wide and SSOP Package The unique differential input sample-and-hold can acquire
O U
single-ended or differential input signals up to its 20MHz
APPLICATI S
bandwidth. The 60dB common mode rejection allows ■ users to eliminate ground loops and common mode noise Telecommunications ■ by measuring signals differentially from the source. Digital Signal Processing ■ Multiplexed Data Acquisition Systems The ADC has a µP compatible, 12-bit parallel output port. ■ High Speed Data Acquisition There is no pipeline delay in the conversion results. ■ Spectrum Analysis A separate convert start input and a data ready signal ■ Imaging Systems (BUSY) ease connections to FIFOs, DSPs and micropro- cessors. A digital output driver power supply pin allows , LTC and LT are registered trademarks of Linear Technology Corporation. direct connection to 3V logic.
O U TYPICAL APPLICATI 800kHz, 12-Bit Sampling A/D Converter Effective Bits and Signal-to-(Noise + Distortion) vs Input Frequency
LTC1409 5V 12 74 DIFFERENTIAL 1 28 68 ANALOG INPUT +AIN AVDD 2 27 (–2.5V TO 2.5V) 10 –A 62 NYQUIST IN OVDD –5V 3 26 2.50V 10µF FREQUENCY V 56 REF VSS VREF OUTPUT 4 25 8 50 S/(N + D) (dB) REFCOMP BUSY 10µF 5 24 10µF AGND CS 6 23 6 D11(MSB) CONVST µP CONTROL 7 22 D10 RD LINES 8 21 EFFECTIVE BITS 4 D9 SHDN 9 20 D8 NAP/SLP 10 19 2 D7 OGND 12-BIT 11 18 D6 D0 f PARALLEL SAMPLE = 800ksps 12 17 0 BUS D5 D1 13 16 1k 10k 100k 1M 10M D4 D2 INPUT FREQUENCY (Hz) 14 15 DGND D3 LTC1409 • TA02 LTC1409 • TA01 1
U FEATU S RE DESCRIPTIO
■
Sample Rate: 800ksps
The LTC®1409 is a 1µs, 800ksps, sampling 12-bit A/D ■
Power Dissipation: 80mW
converter that draws only 80mW from ±5V supplies. This ■
72.5dB S/(N + D) and 86dB THD at Nyquist
easy-to-use device includes a high dynamic range sample- ■
No Pipeline Delay
and-hold and a precision reference. Two digitally selectable ■ Nap (4mW) and Sleep (10µW) Shutdown Modes power Shutdown modes provide flexibility for low power ■ Operates with Internal 15ppm/°C Reference systems. or External Reference The LTC1409 full-scale input range is ±2.5V. Maximum ■ True Differential Inputs Reject Common Mode Noise DC specs include ±1LSB INL and ±1LSB DNL over tem- ■ 20MHz Full Power Bandwidth Sampling perature. Outstanding AC performance includes 72.5dB ■ ±2.5V Bipolar Input Range S/(N + D) at the Nyquist input frequency of 400kHz. ■ 28-Pin SO Wide and SSOP Package The unique differential input sample-and-hold can acquire
O U
single-ended or differential input signals up to its 20MHz
APPLICATI S
bandwidth. The 60dB common mode rejection allows ■ users to eliminate ground loops and common mode noise Telecommunications ■ by measuring signals differentially from the source. Digital Signal Processing ■ Multiplexed Data Acquisition Systems The ADC has a µP compatible, 12-bit parallel output port. ■ High Speed Data Acquisition There is no pipeline delay in the conversion results. ■ Spectrum Analysis A separate convert start input and a data ready signal ■ Imaging Systems (BUSY) ease connections to FIFOs, DSPs and micropro- cessors. A digital output driver power supply pin allows , LTC and LT are registered trademarks of Linear Technology Corporation. direct connection to 3V logic.
O U TYPICAL APPLICATI 800kHz, 12-Bit Sampling A/D Converter Effective Bits and Signal-to-(Noise + Distortion) vs Input Frequency
LTC1409 5V 12 74 DIFFERENTIAL 1 28 68 ANALOG INPUT +AIN AVDD 2 27 (–2.5V TO 2.5V) 10 –A 62 NYQUIST IN OVDD –5V 3 26 2.50V 10µF FREQUENCY V 56 REF VSS VREF OUTPUT 4 25 8 50 S/(N + D) (dB) REFCOMP BUSY 10µF 5 24 10µF AGND CS 6 23 6 D11(MSB) CONVST µP CONTROL 7 22 D10 RD LINES 8 21 EFFECTIVE BITS 4 D9 SHDN 9 20 D8 NAP/SLP 10 19 2 D7 OGND 12-BIT 11 18 D6 D0 f PARALLEL SAMPLE = 800ksps 12 17 0 BUS D5 D1 13 16 1k 10k 100k 1M 10M D4 D2 INPUT FREQUENCY (Hz) 14 15 DGND D3 LTC1409 • TA02 LTC1409 • TA01 1