Datasheet LTC1417 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Low Power 14-Bit, 400ksps Sampling ADC Converter with Serial I/O |
| Páginas / Página | 32 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 400ksps. 1.25LSB INL and. 1LSB DNL … |
| Formato / tamaño de archivo | PDF / 413 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTIO. Sample Rate: 400ksps. 1.25LSB INL and. 1LSB DNL Max. Power Dissipation: 20mW (Typ). Single Supply 5V or
Línea de modelo para esta hoja de datos
Versión de texto del documento
LTC1417 Low Power 14-Bit, 400ksps Sampling ADC Converter with Serial I/O
U FEATURES DESCRIPTIO
■ 16-Pin Narrow SSOP Package (SO-8 Footprint) The LTC®1417 is a low power, 400ksps, 14-bit A/D con- ■
Sample Rate: 400ksps
verter. This versatile device can operate from a single 5V or ■ ±
1.25LSB INL and
±
1LSB DNL Max
±5V supplies. An onboard high performance sample-and- ■
Power Dissipation: 20mW (Typ)
hold, a precision reference and internal trimming minimize ■
Single Supply 5V or
±
5V Operation
external circuitry requirements. The low 20mW power ■
Serial Data Output
dissipation is made even more attractive with two user- ■ No Missing Codes Over Temperature selectable power shutdown modes. ■ Power Shutdown: Nap and Sleep The LTC1417 converts 0V to 4.096V unipolar inputs when ■ External or Internal Reference using a 5V supply and ±2.048V bipolar inputs when using ■ Differential High Impedance Analog Input ±5V supplies. DC specs include ±1.25LSB INL, ±1LSB ■ Input Range: 0V to 4.096V or ±2.048V DNL and no missing codes over temperature. Outstanding ■ 81dB S/(N + D) and – 95dB THD at Nyquist AC performance includes 81dB S/(N + D) and – 95dB THD at a Nyquist input frequency of 200kHz.
U APPLICATIO S
The internal clock is trimmed for 2µs maximum conver- ■ sion time. A separate convert start input and a data ready High Speed Data Acquisition ■ signal (BUSY) ease connections to FIFOs, DSPs and Digital Signal Processing ■ microprocessors. Isolated Data Acquisition Systems ■ Audio and Telecom Processing , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Spectrum Instrumentation
U W EQUIVALE T BLOCK DIAGRA A 400kHz, 14-Bit Sampling A/D Converter in a Narrow 16-Lead SSOP Package
5V
Effective Bits and Signal-to-(Noise + Distortion)
10µF
vs Input Frequency
16 VDD 14 86 LTC1417 80 1 A + 12 74 IN 6 S/H 14-BIT ADC 14 EXTCLKIN 68 2 7 A – IN SERIAL SCLK 10 62 S/(N + D) (dB) 8 PORT CLKOUT 9 4.096V D 8 4 OUT REFCOMP BUFFER 10µF EFFECTIVE BITS 6 14 BUSY 8k 12 4 3 2.5V TIMING AND RD VREF 13 REFERENCE LOGIC CONVST 1µF 11 2 SHDN 1k 10k 100k 1M 1417 TA01 INPUT FREQUENCY (Hz) 5 AGND 15 V 10 DGND SS 1417 TA02 (0V OR – 5V) sn1417 1417fas 1
U FEATURES DESCRIPTIO
■ 16-Pin Narrow SSOP Package (SO-8 Footprint) The LTC®1417 is a low power, 400ksps, 14-bit A/D con- ■
Sample Rate: 400ksps
verter. This versatile device can operate from a single 5V or ■ ±
1.25LSB INL and
±
1LSB DNL Max
±5V supplies. An onboard high performance sample-and- ■
Power Dissipation: 20mW (Typ)
hold, a precision reference and internal trimming minimize ■
Single Supply 5V or
±
5V Operation
external circuitry requirements. The low 20mW power ■
Serial Data Output
dissipation is made even more attractive with two user- ■ No Missing Codes Over Temperature selectable power shutdown modes. ■ Power Shutdown: Nap and Sleep The LTC1417 converts 0V to 4.096V unipolar inputs when ■ External or Internal Reference using a 5V supply and ±2.048V bipolar inputs when using ■ Differential High Impedance Analog Input ±5V supplies. DC specs include ±1.25LSB INL, ±1LSB ■ Input Range: 0V to 4.096V or ±2.048V DNL and no missing codes over temperature. Outstanding ■ 81dB S/(N + D) and – 95dB THD at Nyquist AC performance includes 81dB S/(N + D) and – 95dB THD at a Nyquist input frequency of 200kHz.
U APPLICATIO S
The internal clock is trimmed for 2µs maximum conver- ■ sion time. A separate convert start input and a data ready High Speed Data Acquisition ■ signal (BUSY) ease connections to FIFOs, DSPs and Digital Signal Processing ■ microprocessors. Isolated Data Acquisition Systems ■ Audio and Telecom Processing , LTC and LT are registered trademarks of Linear Technology Corporation. ■ Spectrum Instrumentation
U W EQUIVALE T BLOCK DIAGRA A 400kHz, 14-Bit Sampling A/D Converter in a Narrow 16-Lead SSOP Package
5V
Effective Bits and Signal-to-(Noise + Distortion)
10µF
vs Input Frequency
16 VDD 14 86 LTC1417 80 1 A + 12 74 IN 6 S/H 14-BIT ADC 14 EXTCLKIN 68 2 7 A – IN SERIAL SCLK 10 62 S/(N + D) (dB) 8 PORT CLKOUT 9 4.096V D 8 4 OUT REFCOMP BUFFER 10µF EFFECTIVE BITS 6 14 BUSY 8k 12 4 3 2.5V TIMING AND RD VREF 13 REFERENCE LOGIC CONVST 1µF 11 2 SHDN 1k 10k 100k 1M 1417 TA01 INPUT FREQUENCY (Hz) 5 AGND 15 V 10 DGND SS 1417 TA02 (0V OR – 5V) sn1417 1417fas 1