The IVY Balanced Line Stage

The IVY Balanced Linestage

Layout Schematic Manual Part List

Highlights

Functions as either an I/V stage for current-output DACs or linestage for voltage-output DACs

Fully balanced, symmetric operation for ultra-low noise floor

Customizable input impedance to match the application

Flexible and customizable filtering options

Balanced and single-ended outputs can be used simultaneously

Designed specifically for our line of DACs

All connections by direct or optional (included) terminal blocks

IVY is a balanced active I/V line stage with optional filtering and both balanced and single-ended outputs. I/V conversion is performed by a pair of Texas Instruments fully-differantial OPA1632 op-amps, and balanced to single-ended conversion by a National Semiconductor LM4562/LME49720. All op-amps are surface mount (SOIC) and come pre-installed (unless you note otherwise).

Panasonic 1% ECQP(Z) polypropylene (MKP) filter capacitors provide an optional low pass filter in the I/V stage. All resistors are (our favorite) IRC RC's (0.1% metal film). Each op-amp has local Panasonic 100uF FM and Wima 0.1uF MKP2 polypropylene decoupling and bypass capacitors. The IVY modules require a bipolar power supply in the 12-15VDC range.

Ordering Options
Module Combinations
IVY/Power Supply Combo for Buffalo [1] IVY Module Kit for Buffalo [1] Low-Current Bipolar Power Supply Kit** (for IVY)	$109.00 USD
IVY/Power Supply Combo for Opus [1] IVY Module Kit for Opus [1] Low-Current Bipolar Power Supply Kit** (for IVY)	$109.00 USD
IVY/Power Supply Combo for COD [1] IVY Module Kit for COD [1] Low-Current Bipolar Power Supply Kit** (for IVY)	$109.00 USD
Individual Modules
IVY Module Kit for Buffalo**	$75.00 USD
IVY Module Kit for Opus**	$75.00 USD
IVY Module Kit for COD**	$75.00 USD
PCBs
IVY PCB	$14.00 USD
**Note: "Kit" denotes a bare PCB and all parts required to build a complete module, including mounting hardware.