Datasheet LTC1406 (Analog Devices)
| Hersteller | Analog Devices |
| Beschreibung | Low Power, 8-Bit, 20Msps, Sampling A/D Converter |
| Seiten / Seite | 16 / 1 — FEATURES. DESCRIPTION. Low Power, 8-Bit, 20Msps ADC. 250MHz Internal … |
| Dateiformat / Größe | PDF / 381 Kb |
| Dokumentensprache | Englisch |
FEATURES. DESCRIPTION. Low Power, 8-Bit, 20Msps ADC. 250MHz Internal Sample-and-Hold. 7 Effective Bits at 70MHz Input Frequency
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LTC1406 Low Power, 8-Bit, 20Msps, Sampling A/D Converter
U FEATURES DESCRIPTION
■
Low Power, 8-Bit, 20Msps ADC
The LTC ®1406 is a 20Msps, 8-bit, sampling A/D converter ■
250MHz Internal Sample-and-Hold
which draws only 150mW from a single 5V supply. This ■
7 Effective Bits at 70MHz Input Frequency
easy-to-use device includes a high dynamic range sample- ■ ±
1LSB DNL and INL Max
and-hold with a 250MHz bandwidth. ■ Single 5V Supply and 150mW Dissipation The LTC1406’s full-scale input range is ±1V. The inputs ■ Power Down to 1µA can be driven differentially or one input can be tied to a ■ True Differential Inputs Reject Common Mode Noise fixed voltage and the other input driven with a ±1V bipolar ■ Accepts Single-Ended or Differential Input Signals input. Maximum DC specifications include ±1LSB DNL ■ ±1V Differential or 2V Single-Ended Input Span and INL over temperature. Outstanding AC performance ■ Analog Inputs Common Mode to VDD and GND includes 48.5dB S/(N + D) and 62dB THD with a 1MHz ■ 24-Pin Narrow SSOP Package input; 47.5dB S/(N + D) and 59dB THD at the Nyquist input frequency of 10MHz.
U APPLICATIONS
The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 250MHz ■ Telecommunications bandwidth. The 60dB common mode rejection allows ■ Wireless Communications users to eliminate ground loops and common mode noise ■ Digital Cellular Telephones by measuring signals differentially from the source. ■ CCDs and Image Scanners ■ Video Digitizing and Digital Television The ADC has an 8-bit parallel output port with separate ■ Digital Color Copiers power supply and ground allowing easy interface to 3V ■ High Speed Undersampling digital systems. The pipelined architecture has five clock ■ Personal Computer Video cycles of data latency. ■ High Speed Data Acquisition , LTC and LT are registered trademarks of Linear Technology Corporation.
U TYPICAL APPLICATION Low Power, 20MHz, 8-Bit Sampling ADC Effective Bits and Signal-to-Noise + Distortion vs Input Frequency
DVDD DGND OVDD 12 11 2 8 50 24 CLOCK CLK CIRCUITRY 7 44 23 OF/UF 6 38 22 D7 S/(N + D) (dB) 21 5 32 D6 7 DIGITAL A + 20 IN DATA D5 4 8-BIT TRACK-AND- OUTPUT 19 PIPELINE D4 HOLD AMP DRIVERS 3 8 ADC 18 – EFFECTIVE BITS A D3 IN 17 2 D2 2.2V 16 D1 1 2.5k 1.95k 15 D0 0 100k 1M 10M 100M 9 4 10 3 5 6 1 INPUT FREQUENCY (Hz) 1406 BD 1406 TA02 AVDD VBIAS AGND SHDN VREF AGND OGND 1
U FEATURES DESCRIPTION
■
Low Power, 8-Bit, 20Msps ADC
The LTC ®1406 is a 20Msps, 8-bit, sampling A/D converter ■
250MHz Internal Sample-and-Hold
which draws only 150mW from a single 5V supply. This ■
7 Effective Bits at 70MHz Input Frequency
easy-to-use device includes a high dynamic range sample- ■ ±
1LSB DNL and INL Max
and-hold with a 250MHz bandwidth. ■ Single 5V Supply and 150mW Dissipation The LTC1406’s full-scale input range is ±1V. The inputs ■ Power Down to 1µA can be driven differentially or one input can be tied to a ■ True Differential Inputs Reject Common Mode Noise fixed voltage and the other input driven with a ±1V bipolar ■ Accepts Single-Ended or Differential Input Signals input. Maximum DC specifications include ±1LSB DNL ■ ±1V Differential or 2V Single-Ended Input Span and INL over temperature. Outstanding AC performance ■ Analog Inputs Common Mode to VDD and GND includes 48.5dB S/(N + D) and 62dB THD with a 1MHz ■ 24-Pin Narrow SSOP Package input; 47.5dB S/(N + D) and 59dB THD at the Nyquist input frequency of 10MHz.
U APPLICATIONS
The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 250MHz ■ Telecommunications bandwidth. The 60dB common mode rejection allows ■ Wireless Communications users to eliminate ground loops and common mode noise ■ Digital Cellular Telephones by measuring signals differentially from the source. ■ CCDs and Image Scanners ■ Video Digitizing and Digital Television The ADC has an 8-bit parallel output port with separate ■ Digital Color Copiers power supply and ground allowing easy interface to 3V ■ High Speed Undersampling digital systems. The pipelined architecture has five clock ■ Personal Computer Video cycles of data latency. ■ High Speed Data Acquisition , LTC and LT are registered trademarks of Linear Technology Corporation.
U TYPICAL APPLICATION Low Power, 20MHz, 8-Bit Sampling ADC Effective Bits and Signal-to-Noise + Distortion vs Input Frequency
DVDD DGND OVDD 12 11 2 8 50 24 CLOCK CLK CIRCUITRY 7 44 23 OF/UF 6 38 22 D7 S/(N + D) (dB) 21 5 32 D6 7 DIGITAL A + 20 IN DATA D5 4 8-BIT TRACK-AND- OUTPUT 19 PIPELINE D4 HOLD AMP DRIVERS 3 8 ADC 18 – EFFECTIVE BITS A D3 IN 17 2 D2 2.2V 16 D1 1 2.5k 1.95k 15 D0 0 100k 1M 10M 100M 9 4 10 3 5 6 1 INPUT FREQUENCY (Hz) 1406 BD 1406 TA02 AVDD VBIAS AGND SHDN VREF AGND OGND 1