ADSP-2101BS-100 Analog Devices Inc, ADSP-2101BS-100 Datasheet - Page 23

• Manufacturer Part Number: ADSP-2101BS-100
• Description: IC DSP CONTROLLER 16BIT 80PQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2101BS-100

• Rohs Status: RoHS non-compliant
• Interface: Synchronous Serial Port (SSP)
• Clock Rate: 25MHz
• Non-volatile Memory: External
• On-chip Ram: 6kB
• Voltage - I/o: 5.00V
• Voltage - Core: 5.00V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 80-MQFP, 80-PQFP
• Device Core Size: 16b
• Architecture: Enhanced Harvard
• Format: Fixed Point
• Clock Freq (max): 25MHz
• Mips: 25
• Device Input Clock Speed: 25MHz
• Ram Size: 3KB
• Program Memory Size: Not RequiredKB
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 80
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

REV. B
SPECIFICATIONS (ADSP-2111)
POWER DISSIPATION EXAMPLE
To determine total power dissipation in a specific application,
the following equation should be applied for each output:
C = load capacitance, f = output switching frequency.
Example:
In an ADSP-2111 application where external data memory is
used and no other outputs are active, power dissipation is
calculated as follows:
Assumptions:
•
•
•
•
P
(C
Output
Address, DMS 8
Data, WR
RD
CLKOUT
Total power dissipation for this example = P
ENVIRONMENTAL CONDITIONS
Ambient Temperature Rating:
Package
PGA
PQFP
INT
External data memory is accessed every cycle with 50% of the
address pins switching.
External data memory writes occur every other cycle with
50% of the data pins switching.
Each address and data pin has a 10 pF total load at the pin.
The application operates at V
T
T
PD = Power Dissipation in W
CA
JA
JC
AMB
CASE
= internal power dissipation (from Figure 17).
V
= Thermal Resistance (Junction-to-Ambient)
= Thermal Resistance (Junction-to-Case)
DD
= Thermal Resistance (Case-to-Ambient)
Total Power Dissipation = P
= T
= Case Temperature in C
2
CASE
f ) is calculated for each output:
# of
Pins
9
1
1
– (PD
35 C/W
42 C/W
JA
C
10 pF
10 pF
10 pF
10 pF
C
CA
)
V
DD
DD
2
= 5.0 V and t
INT
V
5
5
5
5
2
2
2
2
DD
V
V
V
V
f
+ (C
2
18 C/W
18 C/W
JC
f
20 MHz = 40.0 mW
10 MHz = 22.5 mW
10 MHz = 2.5 mW
20 MHz = 5.0 mW
INT
V
DD
CK
+ 70.0 mW.
2
= 50 ns.
f )
70.0 mW
17 C/W
23 C/W
CA
–23–
CAPACITIVE LOADING
Figures 18 and 19 show capacitive loading characteristics for the
ADSP-2111.
Figure 19. Typical Output Valid Delay or Hold vs. Load
Capacitance, C
Figure 18. Typical Output Rise Time vs. Load Capacitance, C
(at Maximum Ambient Operating Temperature)
NOMINAL
+12
+10
14
12
10
+8
+6
+4
+2
–2
–4
–6
L
8
6
4
2
(at Maximum Ambient Operating Temperature)
25
25
50
50
V
75
75
C
C
DD
V
L
L
DD
– pF
– pF
= 4.5V
100
100
= 4.5V
125
125
ADSP-21xx
150
150
L