Features
•
“Combo” XLR/TRS balanced input with switchable 48V phantom power
•
Balanced audio output on XLR and TRS connectors
•
Supports pro audio signal levels: +21dBu input / output
•
Gain (measured input to output) adjustable in 1dB steps: 0dB, and 8-63dB
•
USB 1.1 and USB 2.0 compatible control port
•
Graphical user interface software for controlling 5171 parameters
•
Prototyping area
Description
The THAT Digitally-Controlled Mic Preamp Demo Board allows developers to
evaluate the performance of the THAT1570 / THAT5171 chipset. The demo
board provides a balanced audio input on a Neutrik “combo” connector with 48V
phantom power, and a balanced audio output on XLR and ¼” TRS connectors.
The supplied graphical user interface (GUI) controls all functions in the 5171 chip
via USB. A prototyping area is available for adding or modifying circuitry.
Specifications
mA
23 (V+ supply)
23 (V- supply)
0.5 (+5V supply)
I
CC
; -I
EE
, I
DD
Supply Current
nV/
√
Hz
1.65 (60dB gain)
1.9 (40dB gain)
4.8 (20dB gain)
20 (0dB gain)
EIN
Equivalent Input Noise
(1570 output)
nV/
√
Hz
1.65 (60dB gain)
1.9 (40dB gain)
5.0 (20dB gain)
22.9 (0dB gain)
EIN
Equivalent Input Noise
(main output)
%
0.0003 (0dB gain)
0.0003 (20dB gain)
0.0008 (40dB gain)
0.006 (60dB gain)
THD
Total Harmonic Distortion
(V
OUT
= +16dBu (5V
RMS
); R
L
= 10k
Ω
;
C
L
= 10 pF; f = 1kHz; BW = 22 kHz)
dB
±
0.15
A
err
Gain error (all settings)
dB
0
8 to 63 in 1dB steps
A
dB
Gain (input to output)
dBu
+21
V
OUT
Maximum Differential Output Level
(V+ /V- =
±
15V)
dBu
+21
v
in-BAL
Maximum Input Level
(V+ /V- =
±
15V)
V
±
15
V+ - V-
Power Supply Voltage
Units
Typical
Symbol
Parameter
Document 600134 Rev 02
Page 3 of 16
THAT 1570/5171-DEMO User’s Guide
THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA
Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com
Copyright © 2009, THAT Corporation; All rights reserved.
