OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MT8815APR1

P1-P3P4-P6P7-P9P10-P11
MT8815 Data Sheet
4
Zarlink Semiconductor Inc.
Functional Description
The MT8815 is an analog switch matrix with an array size of 8×12. The switch array is arranged such that there are
8 columns by 12 rows. The columns are referred to as the Y inputs/outputs and the rows are the X inputs/outputs.
The crosspoint analog switch array will interconnect any X I/O with any Y I/O when turned on and provide a high
degree of isolation when turned off. The control memory consists of a 96 bit write only RAM in which the bits are
selected by the address inputs (AY0-AY2, AX0-AX3). Data is presented to the memory on the DATA input. Data is
asynchronously written into memory whenever the STROBE input is high and is latched on the falling edge of
STROBE. A logical “1” written into a memory cell turns the corresponding crosspoint switch on and a logical “0”
turns the crosspoint off. Only the crosspoint switches corresponding to the addressed memory location are altered
when data is written into memory. The remaining switches retain their previous states. Any combination of X and Y
inputs/outputs can be interconnected by establishing appropriate patterns in the control memory. A logical “1” on
the RESET input will asynchronously return all memory locations to logical “0” turning off all crosspoint
switches. Two voltage reference pins (V
SS
and V
EE
) are provided for the MT8815 to enable switching of negative
analog signals. The range for digital signals is from V
DD
to V
SS
while the range for analog signals is from V
DD
to
V
EE
. V
SS
and V
EE
pins can be tied together if a single voltage reference is needed.
Address Decode
The seven address inputs along with the STROBE are logically ANDed to form an enable signal for the resettable
transparent latches. The DATA input is buffered and is used as the input to all latches. To write to a location, RESET
must be low while the address and data are set up. Then the STROBE input is set high and then low causing the
data to be latched. The data can be changed while STROBE is high, however, the corresponding switch will turn on
and off in accordance with the DATA input. DATA must be stable on the falling edge of STROBE in order for correct
data to be written to the latch.
MT8815 Data Sheet
5
Zarlink Semiconductor Inc.
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
† DC Electrical Characteristics are over recommended temperature range.
‡ Typical figures are at 25
C and are for design aid only; not guaranteed and not subject to production testing.
Absolute Maximum Ratings*- Voltages are with respect to V
EE
unless otherwise stated.
Parameter Symbol Min. Max. Units
1 Supply Voltage V
DD
V
SS
-0.3
-0.3
15.0
V
DD
+0.3
V
V
2 Analog Input Voltage V
INA
-0.3 V
DD
+0.3 V
3 Digital Input Voltage V
IN
V
SS
-0.3 V
DD
+0.3 V
4 Current on any I/O Pin I ±15 mA
5 Storage Temperature T
S
-65 +150 C
6 Package Power Dissipation PLASTIC DIP P
D
0.6 W
Recommended Operating Conditions
- Voltages are with respect to V
EE
unless otherwise stated.
Characteristics Sym. Min. Typ. Max. Units Test Conditions
1 Operating Temperature T
O
-40 25 85 C
2 Supply Voltage V
DD
V
SS
4.5
V
EE
13.2
V
DD
-4.5
V
V
3 Analog Input Voltage V
INA
V
EE
V
DD
V
4 Digital Input Voltage V
IN
V
SS
V
DD
V
DC Electrical Characteristics
†
- Voltages are with respect to V
EE
=V
SS
=0V, V
DD
=12V unless otherwise stated.
Characteristics Sym. Min. Typ.
‡
Max. Units Test Conditions
1 Quiescent Supply Current I
DD
1 100 A All digital inputs at V
IN
=V
SS
or
V
DD
0.4 1.5 mA All digital inputs at V
IN
=2.4V +
V
SS
; V
SS
=7.0V
5 15 mA All digital inputs at V
IN
=3.4V
2 Off-state Leakage Current
(See G.9 in Appendix)
I
OFF
1 500 nA IV
Xi
- V
Yj
I = V
DD
- V
EE
See Appendix, Fig. A.1
3 Input Logic “0” level V
IL
0.8+V
SS
VV
SS
=7.5V; V
EE
=0V
4 Input Logic “1” level V
IH
2.0+V
SS
VV
SS
=6.5V; V
EE
=0V
5 Input Logic “1” level V
IH
3.3 V
6 Input Leakage (digital pins) I
LEAK
0.1 10 A All digital inputs at V
IN
= V
SS
or V
DD
MT8815 Data Sheet
6
Zarlink Semiconductor Inc.
† Timing is over recommended temperature range. See Fig. 3 for control and I/O timing details.
‡ Typical figures are at 25
C and are for design aid only; not guaranteed and not subject to production testing.
Crosstalk measurements are for Plastic DIPS only, crosstalk values for PLCC packages are approximately 5 dB better.
DC Electrical Characteristics- Switch Resistance - V
DC
is the external DC offset applied at the analog I/O pins.
Characteristics Sym 25C70C85C Units Test Conditions
Typ. Max. Typ. Max. Typ. Max.
1 On-state V
DD
=12V
Resistance V
DD
=10V
V
DD
= 5V
(See G.1, G.2, G.3 in
Appendix)
R
ON
45
55
120
65
75
185
75
85
215
80
90
225
V
SS
=V
EE
=0V,V
DC
=V
DD
/2,
IV
Xi
-V
Yj
I = 0.4V
See Appendix, Fig. A.2
2 Difference in on-state
resistance between two
switches
(See G.4 in Appendix)
R
ON
510 10 10 V
DD
=12V, V
SS
=V
EE
=0,
V
DC
=V
DD
/2,
IV
Xi
-V
Yj
I = 0.4V
See Appendix, Fig. A.2
AC Electrical Characteristics
†
- Crosspoint Performance-Voltages are with respect to V
DD
=5V, V
SS
=0V,
V
EE
=-7V, unless otherwise stated.
Characteristics Sym. Min. Typ.
‡
Max. Units Test Conditions
1 Switch I/O Capacitance C
S
20 pF f=1 MHz
2 Feedthrough Capacitance C
F
0.2 pF f=1 MHz
3 Frequency Response
Channel “ON”
20LOG(V
OUT
/V
Xi
)=-3dB
F
3dB
45 MHz Switch is “ON”; V
INA
= 2Vpp
sinewave; R
L
= 1k
See Appendix, Fig. A.3
4 Total Harmonic Distortion
(See G.5, G.6 in Appendix)
THD 0.01 % Switch is “ON”; V
INA
= 2Vpp
sinewave f= 1kHz; R
L
=1k
5 Feedthrough
Channel “OFF”
Feed.=20LOG (V
OUT
/V
Xi
)
(See G.8 in Appendix)
FDT -95 dB All Switches “OFF”; V
INA
=
2Vpp sinewave f= 1kHz;
R
L
= 1k.
See Appendix, Fig. A.4
6 Crosstalk between any two
channels for switches Xi-Yi and
Xj-Yj.
Xtalk=20LOG (V
Yj
/V
Xi
).
(See G.7 in Appendix).
X
talk
-45 dB V
INA
=2Vpp sinewave
f= 10MHz; R
L
= 75.
-90 dB V
INA
=2Vpp sinewave
f= 10kHz; R
L
= 600.
-85 dB V
INA
=2Vpp sinewave
f= 10kHz; R
L
= 1k.
-80 dB V
INA
=2Vpp sinewave
f= 1kHz; R
L
= 10k.
Refer to Appendix, Fig. A.5
for test circuit.
7 Propagation delay through
switch
t
PS
30 ns R
L
=1k; C
L
=50pF
P1-P3P4-P6P7-P9P10-P11

MT8815APR1

Mfr. #:
Buy MT8815APR1
Manufacturer:
Microchip / Microsemi
Description:
Analog & Digital Crosspoint ICs
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet