I have connected the ADA4870 in a configuration (as shown in picture) very similar to the evaluation board presented in figure 5 here
the amp in connected as an non-inverting amplifier set for a gain of 5 (have tried gain of 10 too) but the setup is unable to provide a gain greater than one. The supply is +-17V and the input is 2Vp-p. A clean sinusoid is reproduced but not at the level of gain required. Could someone please shed some light on what could be wrong. Thanks very much.