Featured Products Operation from 1.7V - ideal for portable motion sensors Compact Sensor Amps BD5291 Series Optimized for 1.8V system power supplies Robust design enables operation even from 1.7V Superior common-mode rejection ratio Low-voltage operation Input-output full swing VSOF5 SSOP5 Low input offset voltage Compact package Combining ease-of-use with high accuracy signal amplification 1.2 The offset voltage change point at the differential input stage does not exist, increasing the minimum Common-Mode Rejection Ratio (CMRR) from the conventional 45dB to 70dB. This minimizes errors due to common-mode signals that appear at the output, ensuring high-accuracy signal amplification. Output Voltage Comparison 1.1 (At Low Voltages) Output Voltage [V] Input/output full-swing operation is enabled at a supply voltage of 1.7V, making it possible to maintain a wide dynamic range, even at low voltages. Also, sufficient operating margin is ensured at 1.8V, contributing to lower application voltages. High accuracy signal amplification 1.0 0.9 BD5291G Linearity maintained even at low voltages 0.8 0.7 0.6 Conventional Full Swing Product 0.5 0.4 1.2 Small operating margin below 1.7V 1.3 1.4 1.5 1.6 1.7 Supply Voltage [V] 1.8 1.9 : +1.7V to +5.5V : 2.5V/μs : -40°C to +85°C : VSS to VDD : 2.5mV (Max.) : 1pA (Typ.) 8 6 4 2 Common-Mode Input Range Comparison Common-Mode Input Range BD5291G Very little change vs. common-mode input 0 -2 -4 -6 -8 Conventional Product Significant change → Poor CMRR Common-Mode Input Voltage [V] Applications ■ Small-signal output sensor amps ■ Acceleration/angular velocity sensor signal processing ■ Portable devices ■ Low voltage, small-signal processing circuits ■ Active filters ■ Microphone amps Characteristics Comparison Part No. Supply Voltage Range (VDD) [V] Input/Output Range [V] CMRR (Min.) [dB] Input Offset Voltage (Max.) [mV] Package (mm) 1.7 to 5.5 0 to VDD 70 ± 2.5 SSOP5 (2.9 × 2.8 × 1.25) VSOF5 (1.6 × 1.6 × 0.6) 1.8 to 5.5 0 to VDD 45 ±9 SSOP5 (2.9 × 2.8 × 1.25) BD5291G BD5291FVE Conventional : Under development VDD=1.8V VSS=0V -10 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 1.9 2.0 Key Characteristics ■ Supply Voltage Range (Single Source) ■ Slew Rate ■ Operating Temp. Range ■ Common-Mode Input Range ■ Input Offset Voltage ■ Input Bias Current 10 Offset Voltage [mV] Easier to use with low-voltage operation and input/output full-swing mode And more Application Block Diagram BD5291 Series Control System Sensor Opeamp. (Amplification) VDD 1.8V VBIAS1 1.7V to 5.5V Sensor (Detection) +IN -IN 1.8V MCU OUT Class AB Control A/D Converter VBIAS2 VSS Performs high-accuracy full-swing amplification of small signals detected by the sensor ROHM Opamp. Lineup (Ideal for Sensors) Part No. BD5291G BD5291FVE BU7295HFV BU7261G BU7262F BU7262FVM BU7262NUX BU7264F BU7264FV BU7275HFV BU7241G BU7242F BU7242FVM BU7242NUX BU7244F BU7244FV BU7271G BU7205HFV BU7265G BU7266F BU7266FV BU7266FVM BU7255HFV BU7291G :Under development Operating No. Voltage Range Circuit Current of (Typ.) [µA] (VDD)[V] Circuits Input Offset Voltage (Max.) [mV] CMRR (Min.) [dB] Gain Bandwidth Product (Typ.) [MHz] Slew Rate (Typ.) [V/µs] 1 1.7 to 5.5 650 ± 2.5 70 3.2 2.5 1 1 1.8 to 5.5 1.8 to 5.5 150 250 ±6 ±9 45 45 1 2 1 1.1 2 1.8 to 5.5 550 ±9 45 2 1.1 4 1.8 to 5.5 1100 ±9 45 2 1.1 1 1 1.8 to 5.5 1.8 to 5.5 40 70 ±6 ±9 45 45 0.6 0.9 0.3 0.4 2 1.8 to 5.5 180 ±9 45 0.9 0.4 4 1.8 to 5.5 360 ±9 45 0.9 0.4 1 1 1 1.8 to 5.5 1.8 to 5.5 1.8 to 5.5 8.6 0.4 0.35 ±8 ± 9.5 ± 8.5 45 45 45 0.09 0.0025 0.004 0.05 0.0025 0.0024 2 1.8 to 5.5 0.7 ± 8.5 45 0.004 0.0024 1 1 2.4 to 5.5 2.4 to 5.5 ±9 ±9 40 40 4 2.8 3.4 3 540 470 Package SSOP5 VSOF5 HVSOF5 SSOP5 SOP8 MSOP8 VSON008X2030 SOP14 SSOP-B14 HVSOF5 SSOP5 SOP8 MSOP8 VSON008X2030 SOP14 SSOP-B14 SSOP5 HVSOF5 SSOP5 SOP8 SSOP-B8 MSOP8 HVSOF5 SSOP5 The content specified in this document is correct as of December 1st, 2013. [O_028] Catalog No.56O6749E 12.2013 ROHM © PDF