AD8215YRZ Analog Devices Inc, AD8215YRZ Datasheet - Page 11

• Manufacturer Part Number: AD8215YRZ
• Description: IC CURRENT MONITOR 0.15% 8SOIC
• Manufacturer: Analog Devices Inc
• Type: Current Sense Ampr

Specifications of AD8215YRZ

• Function: Current Monitor
• Sensing Method: High/Low-Side
• Accuracy: ±0.15%
• Voltage - Input: -2 ~ 65 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Channels: 1
• Number Of Elements: 1
• Power Supply Requirement: Single
• Common Mode Rejection Ratio: 80dB
• Input Resistance: 5@5VMohm
• Input Offset Voltage: 1@5VmV
• Single Supply Voltage (typ): 5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Rejection Ratio: 75dB
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• No. Of Amplifiers: 1
• Gain Db Max: 20dB
• Bandwidth: 450kHz
• Cmrr: 120dB
• Slew Rate: 4.5V/µs
• Supply Voltage Range: 4.5V To 5.5V
• Supply Current: 1.3mA
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

APPLICATION NOTES
OUTPUT LINEARITY
In all current sensing applications, and especially in automotive
and industrial environments where the common-mode voltage
can vary significantly, it is important that the current sensor
maintain the specified output linearity, regardless of the input
differential or common-mode voltage. The AD8215 contains
specific circuitry on the input stage, which ensures that even
when the differential input voltage is very small and the
common-mode voltage is also low (below the 5 V supply),
the input-to-output linearity is maintained. Figure 27 shows
the differential input voltage vs. the corresponding output
voltage at different common modes.
Figure 27. Gain Linearity Due to Differential and Common-Mode Voltage
200
180
160
140
120
100
80
60
40
20
0
0
1
2
DIFFERENTIAL INPUT VOLTAGE (mV)
3
4
5
6
IDEAL V
V
V
OUT
OUT
(mV) @ V
(mV) @ V
7
OUT
8
(mV)
CM
CM
= 0V
= 65V
9
10
Rev. 0 | Page 11 of 16
Regardless of the common mode, the AD8215 provides a
correct output voltage when the differential input is at least
2 mV, which is due to the voltage range of the output amplifier
that can go as low as 33 mV typical. The specified minimum
output amplifier voltage is 100 mV to provide sufficient guard-
bands. The ability of the AD8215 to work with very small
differential inputs, regardless of the common-mode voltage,
allows for more dynamic range, accuracy, and flexibility in any
current sensing application.
AD8215