Linear Technology LTC2450 Quick Start Manual

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1067
DESCRIPTION
Demonstration circuit 1067 features the LTC2450, a
16 bit high performance ΔΣ analog-to-digital con-
verter (ADC). The LTC2450 features 2LSB linearity,
2LSB offset, and 1.4µV RMS noise. The input is sin-
gle ended with a range of 0 (Ground) to Vcc. The
modulator's proprietary sampling technique reduces
the average input current to less than 50nA – orders
of magnitude lower than typical delta sigma ADCs.
The LTC2450 is available in a 6 pin, 3x3mm DFN
package and has an easy to use SPI interface.
DC1067 is a member of Linear Technology's
QuickEval™ family of demonstration boards. It is de-
signed to allow easy evaluation of the LTC2450 and
may be connected directly to the target application's
Monitor reference / Vcc
or external reference
source (See Hardware
Set-up)
Single-ended In-
put
analog signals while using the DC590 USB Serial
Controller board and supplied software to measure
performance. The exposed ground planes allow
proper grounding to prototype circuitry. After evaluat-
ing with Linear Technology's software, the digital sig-
nals can be connected to the end application's proc-
essor / controller for development of the serial inter-
face.
Design files for this circuit board are available. Call
the LTC factory.
LTC is a trademark of Linear Technology Corporation
Figure 1. Proper Measurement Equipment Setup
EVALUATION BOARD
LTC2450
Ribbon cable
To DC590
Controller
1