We present B,V time-series photometry of ( catalog Andromeda~XIX ) ( And XIX ) , the most extended ( half-light radius of 6.2 ^ { \prime } ) of Andromeda ’ s dwarf spheroidal companions , that we observed with the Large Binocular Cameras at the Large Binocular Telescope . We surveyed a 23 ^ { \prime } \times 23 ^ { \prime } area centered on And XIX and present the deepest color magnitude diagram ( CMD ) ever obtained for this galaxy , reaching , at V \sim 26.3 mag , about one magnitude below the horizontal branch ( HB ) . The CMD shows a prominent and slightly widened red giant branch , along with a predominantly red HB , which , however , extends to the blue to significantly populate the classical instability strip . We have identified 39 pulsating variable stars , of which 31 are of RR Lyrae type and 8 are Anomalous Cepheids ( ACs ) . Twelve of the RR Lyrae variables and 3 of the ACs are located within And XIX ’ s half light radius . The average period of the fundamental mode RR Lyrae stars ( \langle Pab \rangle = 0.62 d , \sigma = 0.03 d ) and the period-amplitude diagram qualify And XIX as an Oosterhoff-Intermediate system . From the average luminosity of the RR Lyrae stars ( \langle V ( RR ) \rangle = 25.34 mag , \sigma = 0.10 mag ) we determine a distance modulus of ( m-M ) _ { 0 } = 24.52 \pm 0.23 mag in a scale where the distance to the Large Magellanic Cloud ( LMC ) is 18.5 \pm 0.1 mag . The ACs follow a well defined Period-Wesenheit ( PW ) relation that appears to be in very good agreement with the PW relationship defined by the ACs in the LMC .