ADA4691-2ACBZ-R7 Analog Devices Inc, ADA4691-2ACBZ-R7 Datasheet - Page 16
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ADA4691-2ACBZ-R7
Manufacturer Part Number
ADA4691-2ACBZ-R7
Description
Dual W/SD LowPwr/Noise,Wideband, R-R
Manufacturer
Analog Devices Inc
Datasheet
1.ADA4692-2ACPZ-R7.pdf
(20 pages)
Specifications of ADA4691-2ACBZ-R7
Amplifier Type
Voltage Feedback
Number Of Circuits
2
Output Type
Rail-to-Rail
Slew Rate
1.3 V/µs
Gain Bandwidth Product
3.6MHz
Current - Input Bias
0.5pA
Voltage - Input Offset
500µV
Current - Supply
180µA
Current - Output / Channel
55mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 5.5 V, ±1.35 V ~ 2.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
9-WLCSP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
-3db Bandwidth
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADA4691-2ACBZ-R7TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADA4691-2ACBZ-R7
Manufacturer:
AD
Quantity:
12 465
ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4
SHUTDOWN OPERATION
INPUT PIN CHARACTERISTICS
The ADA4691-2 has a classic CMOS logic inverter input for each
shutdown pin, as shown in Figure 56.
With slowly changing inputs, the top transistor and bottom
transistor may be slightly on at the same time, increasing the
supply current. This can be avoided by driving the input with
a digital logic output having fast rise and fall times. Figure 57
through Figure 59 show the supply current for both sections
switching simultaneously with rise times of 1 μs, 10 μs, and 1 ms.
Clearly, the rise and fall times should be faster than 10 μs.
Using an RC time constant to enable/disable shutdown is not
recommended.
I
SD A, SD B
DUT OUTPUT
I
SD A, SD B
DUT OUTPUT
SY
SY
= 196mV/1k = 196µA
= 192mV/1k = 196µA
Figure 58. Shutdown Pin Rise Time = 10 μs
Figure 57. Shutdown Pin Rise Time = 1 μs
INPUT
Figure 56. CMOS Inverter
TIME (400µs/DIV)
TIME (400µs/DIV)
V
DD
P-CHANNEL
N-CHANNEL
OUTPUT
Rev. C | Page 16 of 20
INPUT THRESHOLD
The input threshold is approximately 1.2 V above the V− pin when
operating on ground and 5 V and 0.9 V when operating on 2.7 V
(see Figure 60 and Figure 61). The threshold is relatively stable
over temperature. For operation on split supplies, the logic swing
may have to be level shifted.
500
450
400
350
300
250
200
150
100
300
250
200
150
100
50
50
0
0
0
0
Figure 61. Supply Current vs. Temperature, V
Figure 60. Supply Current vs. Temperature, V
ADA4691-2
T
V
ADA4691-2
V
A
SY
SY
= 25°C
0.5
= 5V
= 2.7V
0.3
Figure 59. Shutdown Pin Rise Time = 1 ms
1.0
0.6
1.5
TIME (400µs/DIV)
0.9
T
A
= –40°C
SD VOLTAGE (V)
SD VOLTAGE (V)
2.0
T
1.2
A
T
A
T
= +125°C
2.5
A
= +125°C
= –40°C
SD A, SD B
I
DUT OUTPUT
SY
1.5
3.0
= 724mV/1k = 724µA
1.8
3.5
T
T
A
A
T
T
= +85°C
2.1
= +85°C
A
A
4.0
SY
SY
= +25°C
= +25°C
= 2.7 V
= 5 V
2.4
4.5
5.0
2.7