ADA4850-2 Analog Devices, ADA4850-2 Datasheet - Page 13

• Manufacturer Part Number: ADA4850-2
• Description: High Speed, Rail-to-Rail Output Op Amp with Ultralow Power Down
• Manufacturer: Analog Devices

Specifications of ADA4850-2

• -3db Bandwidth: 175MHz
• Slew Rate: 220V/µs
• Vos: 600µV
• Ib: 2.3µA
• # Opamps Per Pkg: 2
• Input Noise (nv/rthz): 10nV/rtHz
• Vcc-vee: 2.7V to 6V
• Isy Per Amplifier: 2.8mA
• Packages: CSP

Figure 40 shows the output recovery transients for the amplifier
recovering from a saturated output from the top and bottom
supplies to a point at midsupply.
–0.5
–1.5
6.5
5.5
4.5
3.5
2.5
1.5
0.5
0
INPUT
VOLTAGE
EDGES
10
20
Figure 40. Overload Recovery
30
40
V
OUT
TIME (ns)
V
= +2.5V TO 0V
50
OUT
= –2.5V TO 0V
60
70
80
V
G = –1
R
S
L
= 5V
= 1k Ω
90
100
Rev. B | Page 13 of 16
OPERATING THE ADA4850-1/ADA4850-2 ON
BIPOLAR SUPPLIES
The ADA4850-1/ADA4850-2 can operate on bipolar supplies
up to ±5 V. The only restriction is that the voltage between −V
and the POWER DOWN pin must not exceed 6 V. Voltage
differences greater than 6 V can cause permanent damage to the
amplifier. For example, when operating on ±5 V supplies, the
POWER DOWN pin must not exceed +1 V.
POWER-DOWN PINS
The ADA4850-1/ADA4850-2 feature an ultralow power-down
mode that lowers the supply current to less than 150 nA. When
a power-down pin is brought to within 0.6 V of the negative
supply, the amplifier is powered down. Table 5 outlines the
power-down pins functionality. To ensure proper operation, the
power-down pins (PD1, PD2) should not be left floating.
Table 5. Power-Down Pins Functionality
Supply Voltage
Power Down
Enabled
3 V and 5 V
ADA4850-1
0 V to 0.7 V
0.8 to +V
ADA4850-1/ADA4850-2
S
ADA4850-2
0 V to 0.6 V
1.7 V to +V
S
S