Analog Devices ADSP-TS201S Output Drive Currents, Typical Drive Currents at Strength

ADSP-TS201S

OUTPUT DRIVE CURRENTS

Figure 26 through Figure 33 show typical I–V characteristics for the output drivers of the ADSP-TS201S processor. The curves in these diagrams represent the current drive capability of the out- put drivers as a function of output voltage over the range of drive strengths. Typical drive currents for intermediate temper- atures (such as 85°C) should be obtained from the curves using linear interpolation. For complete output driver characteristics, refer to the DSP’s IBIS models, available on the Analog Devices website (www.analog.com).

STRENGTH 0

	15.0
	12.5	IOL
	10.0
	7.5					VDD_IO = 2.63V, –40°C
)	5.0			VDD_IO = 2.5V, +25°C
mA	2.5
(						VDD_IO = 2.63V, –40°C
NT	0	VDD_IO = 2.38V, +105°C
RE
UR	–2.5			VDD_IO = 2.5V, +25°C
INC	–5.0VDD_IO = 2.38V, +105°C
P
PUT	–7.5
T	–10.0
OU							IOH
	–12.5
	–15.0
	0	0.4	0.8	1.2	1.6	2.0	2.4	2.8
			OUTPUT PIN VOLTAGE (V)

Figure 26. Typical Drive Currents at Strength 0

STRENGTH 1

	30
	25	IOL
	20
)	15					VDD_IO = 2.63V, –40°C
(mA	10			VDD_IO = 2.5V, +25°C
ENT	5					VDD_IO = 2.63V, –40°C
URR	0	VDD_IO = 2.38V, +105°C
NC	–5			VDD_IO = 2.5V, +25°C
PI	–10	VDD_IO = 2.38V, +105°C
TPUT
	–15
OU	–20
	–25						IOH
	–30
	0	0.4	0.8	1.2	1.6	2.0	2.4	2.8
			OUTPUT PIN VOLTAGE (V)

Figure 27. Typical Drive Currents at Strength 1

				STRENGTH 2
	45	IOL
	36
(mA)	27			VDD_IO = 2.5V, +25°C
	18					VDD_IO	= 2.63V, –40°C
CURRENT
	9			VDD_IO = 2.5V, +25°C
	0	VDD_IO = 2.38V, +105°C			VDD_IO = 2.63V, –40°C
PIN	–9
	VDD_IO	= 2.38V, +105°C
OUTPUT
	–18
	–27						IOH
	–36
	–45
	0	0.4	0.8	1.2	1.6	2.0	2.4	2.8
			OUTPUT PIN VOLTAGE (V)

Figure 28. Typical Drive Currents at Strength 2

STRENGTH 3

	55
	44	IOL
(mA)	33					VDD_IO = 2.63V, –40°C
	22
				VDD_IO = 2.5V, +25°C
CURRENT	11
						VDD_IO = 2.63V, –40°C
	0	VDD_IO = 2.38V, +105°C
PIN	–11			VDD_IO = 2.5V, +25°C
OUTPUT
	–22	VDD_IO = 2.38V, +105°C
	–33
	–44						IOH
	–55
	0	0.4	0.8	1.2	1.6	2.0	2.4	2.8
			OUTPUT PIN VOLTAGE (V)

Figure 29. Typical Drive Currents at Strength 3

STRENGTH 4

	70
	60	IOL
	50
(mA)	40
	30					VDD_IO = 2.63V, –40°C
	20			VDD_IO = 2.5V, +25°C
CURRENT
	10					VDD_IO = 2.63V, –40°C
	0	VDD_IO = 2.38V, +105°C
	–10			VDD_IO = 2.5V, +25°C
PIN
	–20
OUTPUT
	–30	VDD_IO = 2.38V, +105°C
	–40
	–50
	–60						IOH
	–70
	0	0.4	0.8	1.2	1.6	2.0	2.4	2.8
			OUTPUT PIN VOLTAGE (V)

Figure 30. Typical Drive Currents at Strength 4

Rev. C Page 36 of 48 December 2006