LTC1420 Datasheet | Linear Technology

LTC1420 12-Bit, 10Msps, Sampling ADC Features s s s s s s s s s s s s DESCRIPTIO 10Msps Sample Rate Single 5V Supply or ±5V Supplies Integral Nonlinearity Error <0.35LSB Differential Nonlinearity <0.25LSB 71d B S/(N + D) and 83d B SFDR at Nyquist 100MHz Full-Power Bandwidth Sampling ± 2.048V, ±1.024V and ± 0.512V Bipolar Input Range Input PGA Out-of-Range Indicator True Differential Inputs with 75d B CMRR Power Dissipation: 250m W 28-Pin Narrow SSOP Package The LTC®1420 is a 10Msps, 12-bit sampling A/D converter that draws only 250m W from either single 5V or dual ± 5V supplies. This easy-to-use device includes a high dynamic range sample-and-hold, a precision reference and a PGA input circuit. The LTC1420 has a flexible input circuit that allows fullscale input ranges of ± 2.048V ±1.024V and ± 0.512V. The input mon mode voltage is arbitrary, though a 2.5V reference is provided for single supply applications. The input PGA has a digitally selectable 1x or 2x gain. Maximum DC specs include ±1LSB INL and ±1LSB DNL over temperature. Outstanding AC performance includes 71d B S/(N + D) and 83d B SFDR at the Nyquist input frequency of 5MHz. The unique differential input sample-and-hold can acquire single-ended or differential input signals up to its 100MHz bandwidth. The 75d B mon mode rejection allows users to eliminate ground loops and mon mode noise by measuring signals differentially from the source. A separate output logic supply allows direct connection to 3V ponents. U APPLICATIO S s s s s s s Telemunications Digital Signal Processing Multiplexed Data Acquisition Systems High Speed Data Acquisition Spectral Analysis Imaging Systems , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO 5V 1µF 28 GAIN 5V 1µF 7 VDD 5V 1µF 23 VDD 22 OVDD OPTIONAL 3V LOGIC SUPPLY + 1 + AIN S/H 2 - AIN 3 VCM PIPELINED 12-BIT ADC OF 27 D11 (MSB) 10 INL (LSBs) - 1µF OUTPUT BUFFERS MODE SELECT DIGITAL CORRECTION LOGIC D0...