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ALD212908 Datasheet(PDF) 9 Page - Advanced Linear Devices |
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ALD212908 Datasheet(HTML) 9 Page - Advanced Linear Devices |
9 / 12 page ALD212908A/ALD212908 Advanced Linear Devices 9 of 12 DIFFERENTIAL AMPLIFIER CURRENT SOURCE MULTIPLICATION CURRENT SOURCE MIRROR CURRENT SOURCE WITH GATE CONTROL TYPICAL APPLICATIONS ISET RSET M3 V+ = +5V ISOURCE M1, M2: N - Channel MOSFET M3, M4: P - Channel MOSFET M1 M2 V+ = +5V M4 M3, M4: ALD1102, ALD1117, 1/2 ALD1103, 1/2 ALD1105, 1/2 ALD1107, or 1/2 ALD3107xx M1, M2: ALD1101, ALD1116, ALD1109xx, ALD2129xx, 1/2 ALD1103, 1/2 ALD1105, 1/2 ALD1106, 1/2 ALD1108xx, or 1/2 ALD2108xx RSOURCE ISOURCE = ISET = V+ - Vt RSET where Vt = VGS - VGS(th) = VDS V+ = +5V ISOURCE RSET M3 ISET ON OFF Digital Logic Control of Current Source M1 : N - Channel MOSFET M3, M4 : P - Channel MOSFET M4 M1 RSOURCE M1: 1/2 ALD1101, 1/2 ALD1116, 1/2 ALD1109xx, 1/2 ALD2129xx, 1/4 ALD1103, 1/4 ALD1105, 1/4 ALD1106, 1/4 ALD1108xx, or 1/4 ALD2108xx M3, M4: ALD1102, ALD1117, 1/2 ALD1103, 1/2 ALD1105, 1/2 ALD1107, or 1/2 ALD3107xx V+ PMOS PAIR M4 VOUT VIN- NMOS PAIR M2 M1 VIN+ Current Source M3 M1, M2: N - Channel MOSFET M3, M4: P - Channel MOSFET M3, M4: ALD1102, ALD1117, 1/2 ALD1103, 1/2 ALD1105, 1/2 ALD1107, or 1/2 ALD3107xx M1, M2: ALD1101, ALD1116, ALD1109xx, ALD2129xx, 1/2 ALD1103, 1/2 ALD1105, 1/2 ALD1106, 1/2 ALD1108xx, or 1/2 ALD2108xx MSET, M1..MN: N - Channel MOSFET ISET V+ = +5V ISOURCE = ISET x N RSET M2 M3 MSET M1 MN Package 1 Package N MSET, M1..MN: N x ALD1101, N x ALD1116, N x ALD1109xx, N x ALD2129xx, N x ALD1103, N x ALD1106, N x ALD1108xx, or N x ALD2108xx All M's in the set are from the same part number. V+ = +5V RSOURCE |
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