The "Adoro te devote" should really be called the "Te devote laudo". So not "Hidden God, devoutly I adore thee," but rather (to but modify the one translation) "Hidden God, devoutly I do praise thee".

     According to Robert Wielockx, in "Adoro te deuote:  zur Lösung einer alten Crux," Annales theologici:  revista internazionale di teologia 21 (2007):  101-138.

Te deuote laudo, latens ueritas,
     Te que sub his formis uere latitas.

Tibi se cor meum totum subicit,
     Quia te contemplans totum deficit.
Visus, tactus, gustus in te fallitur,
     Sed auditu solo tute creditur.
Credo quicquid dixit dei filius,
     Nichil ueritatis uerbo uerius.

In cruce latebat sola deitas,
     Sed hic latet simul et humanitas.

Ambo uere credens atque confitens,
     Peto quod petiuit latro penitens.
Plagas sicut Thomas non intueor,
     Deum tamen meum te confiteor.

Fac me tibi semper magis credere,
     In te spem habere, te diligere.

O memoriale mortis domini,
     Panis uiuus uitam prestans homini.

Presta michi semper de te uiuere,
     Et te michi semper dulce sapere.

Pie pellicane, Ihesu domine,
     Me immundum munda tuo sanguine.

Cuius una stilla saluum facere,
     Totum mundum posset omni scelere.

Ihesu, quem velatum nunc aspicio,
     Quando fiet illud quod tam sicio?
Vt te reuelata cernens facie,
     Visu sim beatus tue glorie.

This is identical to the critical edition Wielockx gives at "Poetry and theology in the Adoro te deuote:  Thomas Aquinas on the Eucharist and Christ's uniqueness," in Christ among the medieval Dominicans:  representations of Christ in the texts and images of the Order of Preachers, ed. Kent Emery, Jr. and Joseph Wawrykow, Notre Dame conferences in medieval studies 7 (Notre Dame, IN:  University of Notre Dame Press, 1998):  172 (157-174), except that Wielockx now (in 2007) replaces the incipit "Adoro te deuote" with the incipit "Te deuote laudo".  In 1998 he spoke of a "crux" that "cannot be resolved defin[i]tely" (172); in 2007 he provides what he considers to be the "Lösung einer alten Crux", namely the restoration of "Te deuote laudo" to the position usurped after the death of Aquinas by "Adoro te deuote".  The latter (or so Wielockx argues) derives not (like "Te deuote laudo") from Aquinas himself, but from the early-13th-century-and-later incipit common to the "prayers for the adoration of the Holy Cross" that arose originally in the Carolingian period.

Translations to add at some point, however deficient the underlying Latin:
English:

• My own (of the Wielockx edition, above).
• Walsh, Peter G., & Christopher Husch.  One hundred Latin hymns:  Ambrose to Aquinas.  Dumbarton Oaks medieval library 18.  Cambridge, MA:  Harvard University Press, 2012.  No. 99, pp. 366-369.
• Connelly, Joseph.  Hymns of the Roman liturgy.  Westminster, MD:  The Newman Press, 1957.  No. 75, p. 128.
• Hopkins, Gerard Manley (1876).  This was "a rendering of a variant of Aquinas’s 'Adoro te devote, latens Deitas', beginning 'Adoro te supplex, latens deitas', found in editions of the Paris Breviary and in a Paris Processionale of 1697 (Milgate, 1982, p. 204)", via "John Henry Newman's Hymni Ecclesiae (1838), where Hopkins would have found it" (J. R. Watson in the Canterbury Dictionary of Hymnology).  It's incipit from 1953 has been "Godhead here in hiding | Whom I do adore".  For more information on this, see The Poetical Works of Gerard Manley Hopkins, ed. Norman H. Mackenzie (Oxford: Clarendon Press, 1990).
• And many more.

German:

• "Dich bet ich an in Treuen, Gott der heimlich wirkt", by R. A. Schröder, Gesammelte Werke 1 (Berlin & Frankfurt, 1952), pp. 852 ff.