ISL54214EVAL1Z Intersil, ISL54214EVAL1Z Datasheet - Page 2

• Manufacturer Part Number: ISL54214EVAL1Z
• Description: EVALUATION BOARD FOR ISL54214
• Manufacturer: Intersil

Specifications of ISL54214EVAL1Z

• Main Purpose: Interface, 3:1 Multiplexer
• Embedded: No
• Utilized Ic / Part: ISL54214
• Primary Attributes: 2 x SP3T Analog Switch
• Secondary Attributes: 2.7 V ~ 4.6 V Supply
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power Supply
The DC power supply connected at banana jacks J1 (VDD)
and J2 (GND) provides power to the part. The IC requires a
2.7V to 4.6V DC power supply for proper operation. The
power supply should be capable of delivering 100µA of
current.
Logic Control
The state of the ISL54214 or ISL54217 device is determined
by the voltage at the C1and C0 logic pins.
Access to the C1 pin is through banana jack J4 (C1) when
jumper JP5 is not installed, and by the toggle switch S2 (C1)
when the JP5 jumper is installed.
Access to the C0 pin is through banana jack J3 (C0) when
jumper JP4 is not installed, and by the toggle switch S1 (C0)
when the JP4 jumper is installed.
The C1 and C0 logic control pins are 1.8V logic compatible,
which allows them to be control via a standard µcontroller.
Logic “0” (LOW) when ≤ 0.5V or floating
Logic “1” (HIGH) when ≥ 1.4V
If C1 and C0 = Logic “0” (LOW), the part will be in the ALL
OFF mode. The audio switches, USB1 switches, and the
USB2 switches will be OFF.
If C1 = Logic “0” (LOW), and C0 are = Logic “1” (HIGH), the
part will be in the USB1 mode. The USB1 switches will be
ON and the USB2 and audio switches will be OFF.
If C1 = Logic “1” (HIGH) and C0 are = Logic “0” (LOW),
(provided the last mode was not the Audio mode) the part
will be in the USB2 mode. The USB2 switches will be ON
and the USB1 and audio switches will be OFF.
If C1 and C0 = Logic “1” (HIGH) the part will be in the Audio
mode. The audio switches will be ON and the USB switches
will be OFF.
If C1 = Logic “1” (HIGH) and C0 are = Logic “0” (LOW),
(provided the last mode was the Audio mode) the part will be
in the Audio mute mode. The audio switches, USB1
switches and the USB2 switches will be OFF. In this mode, a
1kΩ shunt is connected on the COM side of the switch for
improved isolation when driving 10kΩ to 20kΩ amplifier
loads.
Audio Inputs
The evaluation board has two audio inputs labeled AUDIO
LEFT (J16 or J17) and AUDIO RIGHT (J18 or J19). Each of
these inputs have a BNC connector wired in parallel with a
5. Located in the center of the board is the ISL54214 or
devices are made at connectors J13 and J14, located on
right side of the board.
ISL54217 IC (U1). The evaluation board has a pin 1 dot,
to show how the IC should be oriented onto the
evaluation board. The IC pin 1 indicator dot needs to be
aligned with the evaluation board pin 1 dot indicator.
2
Application Note 1451
RCA jack connector. You can connect an audio
source/generator at either the BNC connector or the RCA
connector.
In a typical application, the left and right outputs of a stereo
source, such as an MP3 player, would be connected to the
RCA jacks J16 and J18, respectfully.
Over a signal range of ±1V (0.707V
have an extremely low r
pass ground referenced audio signals with very low
distortion (<0.05% THD+N) when delivering 15.6mW into a
32Ω headphone speaker load. A 3V
but performance will degrade.
The audio input channels are AC coupled with 200µF
capacitors. These capacitors remove any DC voltage from
the audio signals and reference them to ground of the
device. These capacitors can be shorted out by installing
jumpers at JP14 and JP15.
If the audio source being connected to the evaluation board
already has internal AC coupling capacitors at the output of
its drivers, then the capacitors on the evaluation board
should be shorted out by installing jumpers at JP14 and
JP15. This will prevent further attenuation of the low
frequency content of the audio signal due to the increase of
the high-pass corner frequency resulting from the evaluation
board capacitor in series with the audio source capacitor.
Audio Outputs
The evaluation board has a standard headphone jack
labeled HEADPHONE JACK (J20). A 32Ω stereo
headphone should be plugged into this jack.
The BNC connector J11 (COM-) is in parallel with the audio
left line of the headphone jack and the D- line of the J15
(USB To HOST) connector. The BNC connector J12 (COM+)
is in parallel with the audio right line of the headphone jack
and the D+ line of the J15 (USB To DEVICE) connector.
These BNC connectors can be used to connect resistive
loads and/or test equipment to evaluate the performance of
the IC.
Also in parallel with the COM - and COM + lines are a bank
of common audio load resistors (32Ω, 10kΩ, and 20kΩ) that
can be connected for testing. To connect a resistor, just
install the appropriate jumper. For example, to connect the
32Ω load to the COM- and COM + lines, you would install
jumpers on JP8 and JP13.
USB Connections
A “B” type USB receptacle labeled “USB TO HOST” (J15) is
located on the left side of the board. This receptacle should
be connected using a standard USB cable to the upstream
USB host controller which is usually a PC computer or hub.
When this connection is made, and the part is put in the
USB1 mode, the USB1 switches will be turned ON and will
be able to communicate with the USB device connected at
ON
resistance variation. They can
RMS
P-P
), these switches
signal is acceptable
January 23, 2009
AN1451.0