AD8210YRZ Analog Devices Inc, AD8210YRZ Datasheet - Page 11

• Manufacturer Part Number: AD8210YRZ
• Description: IC CURRENT MONITOR 0.5% 8SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD8210YRZ

• Design Resources: High Voltage, High Precision Current Sensing with Output Level Shifting Using AD8210 and AD8274 (CN0116)
• Function: Current Monitor
• Sensing Method: High/Low-Side
• Accuracy: ±0.5%
• Voltage - Input: -2 ~ 65 V
• Current - Output: 5mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• No. Of Amplifiers: 2
• Input Offset Voltage: 1mV
• Gain Db Max: 20dB
• Bandwidth: 500kHz
• Cmrr: 120dB
• Slew Rate: 3V/µs
• Supply Voltage Range: 4.5V To 5.5V
• Supply Current: 2mA
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MODES OF OPERATION
The AD8210 can be adjusted for unidirectional or bidirectional
operation.
UNIDIRECTIONAL OPERATION
Unidirectional operation allows the AD8210 to measure
currents through a resistive shunt in one direction. The basic
modes for unidirectional operation are ground referenced
output mode and V+ referenced output mode.
In unidirectional operation, the output can be set at the negative
rail (near ground) or at the positive rail (near V+) when the
differential input is 0 V. The output moves to the opposite rail
when a correct polarity differential input voltage is applied. In
this case, full scale is approximately 250 mV. The required
polarity of the differential input depends on the output voltage
setting. If the output is set at ground, the polarity needs to be
positive to move the output up (see Table 5). If the output is set
at the positive rail, the input polarity needs to be negative to
move the output down (see Table 6).
Ground Referenced Output
When using the AD8210 in this mode, both reference inputs
are tied to ground, which causes the output to sit at the negative
rail when the differential input voltage is zero (see Figure 27
and Table 4).
Table 4. V+ = 5 V
V
0 V
250 mV
IN
(Referred to −IN)
Figure 27. Ground Referenced Output
+IN
GND
R
S
–IN
AD8210
G = +20
V
V
REF
REF
1
2
V
S
V
0.05 V
4.9 V
OUTPUT
0.1µF
O
Rev. B | Page 11 of 16
V+ Referenced Output
This mode is set when both reference pins are tied to the
positive supply. It is typically used when the diagnostic scheme
requires detection of the amplifier and wiring before power is
applied to the load (see Figure 28 and Table 5).
Table 5. V+ = 5 V
V
0 V
−250 mV
BIDIRECTIONAL OPERATION
Bidirectional operation allows the AD8210 to measure currents
through a resistive shunt in two directions. The output offset
can be set anywhere within the output range. Typically, it is set
at half scale for equal measurement range in both directions. In
some cases, however, it is set at a voltage other than half scale
when the bidirectional current is nonsymmetrical.
Table 6. V+ = 5 V, V
V
+125 mV
−125 mV
Adjusting the output can also be accomplished by applying
voltage(s) to the reference inputs.
IN
IN
(Referred to −IN)
(Referred to –IN)
+IN
GND
Figure 28. V+ Referenced Output
R
S
O
= 2.5 V with V
–IN
AD8210
G = +20
V
V
REF
REF
2
1
IN
V
= 0 V
S
0.1µF
V
4.9 V
0.05 V
V
4.9 V
0.05 V
O
O
OUTPUT
AD8210