Datasheet LTC1414 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 14-Bit, 2.2 Msps, Sampling A/D Converter |
| Páginas / Página | 20 / 1 — FEATURES. DESCRIPTIO. Sample Rate: 2.2Msps. Outstanding Spectral Purity:. … |
| Formato / tamaño de archivo | PDF / 296 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTIO. Sample Rate: 2.2Msps. Outstanding Spectral Purity:. 80dB S/(N + D) and 95dB SFDR at 100kHz
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LTC1414 14-Bit, 2.2Msps, Sampling A/D Converter
U FEATURES DESCRIPTIO
■
Sample Rate: 2.2Msps
The LTC ®1414 is a 14-bit, 2.2Msps, sampling A/D con- ■
Outstanding Spectral Purity:
verter which draws only 175mW from ±5V supplies. This
80dB S/(N + D) and 95dB SFDR at 100kHz
high performance ADC includes a high dynamic range
78dB S/(N + D) and 84dB SFDR at Nyquist
sample-and-hold, a precision reference and requires no ■
Ultralow Distortion with Single-Ended or
external components.
Differential Inputs
The LTC1414’s high performance sample-and-hold has a ■ ±2.5V Bipolar Input Range Eliminates Level Shifting full-scale input range of ±2.5V. Outstanding AC perfor- and Rail-to-Rail Op Amp Requirements mance includes 80dB S/(N + D) and 95dB SFDR with a ■ Easy Hookup for External or Internal Reference 100kHz input. The performance remains high at the Nyquist ■
No Pipeline Delay
input frequency of 1.1MHz with 78dB S/(N + D) and 84dB ■ Power Dissipation: 175mW on ±5V Supplies SFDR. ■ 28-Pin Narrow SSOP Package The unique differential input sample-and-hold can acquire
U
single-ended or differential input signals up to its 40MHz
APPLICATIO S
bandwidth. The 70dB common mode rejection can elimi- ■ nate ground loops and common mode noise by measuring Telecommunications ■ signal differentially from the source Digital Signal Processing ■ Multiplexed Data Acquisition Systems The ADC has a microprocessor compatible, 14-bit parallel ■ High Speed Data Acquisition output port. There is no pipline delay in the conversion ■ Spectrum Analysis results. ■ Imaging Systems , LTC and LT are registered trademarks of Linear Technology Corporation.
U TYPICAL APPLICATIO
OPTIONAL 3V 5V LOGIC SUPPLY
Effective Bits and Signal-to-Noise + Distortion vs Input Frequency
10µF 14 86 AVDD DVDD OVDD 13 80 LTC1414 12 74 11 68 A + IN 14 D13 (MSB) 10 S/(N + D) (dB) • OUTPUT S/H 14-BIT ADC • 9 BUFFERS – • 8 A D0 (LSB) IN 7 4.0625V EFFECTIVE BITS 6 COMP BUFFER 5 10µF 4 2k BUSY 3 2.5V TIMING AND f V SAMPLE = 2.2MHz REF REFERENCE LOGIC CONVST 2 1µF 1k 10k 100k 1M 10M INPUT FREQUENCY (Hz) V AGND SS DGND OGND 1414 TA02 1414 TA01 10µF – 5V 1
U FEATURES DESCRIPTIO
■
Sample Rate: 2.2Msps
The LTC ®1414 is a 14-bit, 2.2Msps, sampling A/D con- ■
Outstanding Spectral Purity:
verter which draws only 175mW from ±5V supplies. This
80dB S/(N + D) and 95dB SFDR at 100kHz
high performance ADC includes a high dynamic range
78dB S/(N + D) and 84dB SFDR at Nyquist
sample-and-hold, a precision reference and requires no ■
Ultralow Distortion with Single-Ended or
external components.
Differential Inputs
The LTC1414’s high performance sample-and-hold has a ■ ±2.5V Bipolar Input Range Eliminates Level Shifting full-scale input range of ±2.5V. Outstanding AC perfor- and Rail-to-Rail Op Amp Requirements mance includes 80dB S/(N + D) and 95dB SFDR with a ■ Easy Hookup for External or Internal Reference 100kHz input. The performance remains high at the Nyquist ■
No Pipeline Delay
input frequency of 1.1MHz with 78dB S/(N + D) and 84dB ■ Power Dissipation: 175mW on ±5V Supplies SFDR. ■ 28-Pin Narrow SSOP Package The unique differential input sample-and-hold can acquire
U
single-ended or differential input signals up to its 40MHz
APPLICATIO S
bandwidth. The 70dB common mode rejection can elimi- ■ nate ground loops and common mode noise by measuring Telecommunications ■ signal differentially from the source Digital Signal Processing ■ Multiplexed Data Acquisition Systems The ADC has a microprocessor compatible, 14-bit parallel ■ High Speed Data Acquisition output port. There is no pipline delay in the conversion ■ Spectrum Analysis results. ■ Imaging Systems , LTC and LT are registered trademarks of Linear Technology Corporation.
U TYPICAL APPLICATIO
OPTIONAL 3V 5V LOGIC SUPPLY
Effective Bits and Signal-to-Noise + Distortion vs Input Frequency
10µF 14 86 AVDD DVDD OVDD 13 80 LTC1414 12 74 11 68 A + IN 14 D13 (MSB) 10 S/(N + D) (dB) • OUTPUT S/H 14-BIT ADC • 9 BUFFERS – • 8 A D0 (LSB) IN 7 4.0625V EFFECTIVE BITS 6 COMP BUFFER 5 10µF 4 2k BUSY 3 2.5V TIMING AND f V SAMPLE = 2.2MHz REF REFERENCE LOGIC CONVST 2 1µF 1k 10k 100k 1M 10M INPUT FREQUENCY (Hz) V AGND SS DGND OGND 1414 TA02 1414 TA01 10µF – 5V 1