CM1215 - Datasheet Archive
CM1215 Integrated PD+TIA DESCRIPTION FEATURES The Capella CM1215 PDIC is a low voltage integrated photodiode and transimpedence
846 Stewart Drive, Suite 200, Sunnyvale, CA 94085-4534 USA · 408.328.8360 · FAX.408.328.8361 CM1215 CM1215 Integrated PD+TIA DESCRIPTION FEATURES The Capella CM1215 CM1215 PDIC is a low voltage integrated photodiode and transimpedence amplifier (TIA) for use as the photodetector in CD optical pickups. The built-in TIA has low output impedance for stability. The CM1215 CM1215 can also be used in quadruple-speed drives because the photodiode and TIA can operate at typical speeds of 8MHz. R1 DOUT 1 + D IV AMP NC 2 + A IV AMP · Built-in TIA (current-to-voltage conversion circuit) · High PD sensitivity · Recommended Diode for CD applications is an IR laser diode (l=780nm) R2 D F + F IV AMP 10 FOUT R1 AOUT · Low voltage operation (2.5V ~ 5.5V) 9 A 3 8 Vcc · Supports Focus Servo (Astigmatism method) and Tracking servo (Three beam method) APPLICATIONS · Optical pickups for VideoCD-players, CD-ROM, CD-MP3 players, and CDAudio Vc R1 BOUT COUT 4 5 + B IV AMP R1 + C IV AMP 7 B GND R2 C E + E IV AMP 6 EOUT R1 = 88K, R2 = 182k A~F Photodiodes Revision: 1.2 Date: 18-Jul-01 DISCLAIMER Capella Microsystems Inc. reserves the right to make changes in specifications or discontinue this product at any time without notice. Please contact Capella Microsystems Inc. for possible updates before starting a design. Capella Microsystems Inc. products are not designed for use in life support applications. Any parties who use these products in such applications do so at their own risk and agree to fully indemnify Capella Microsystems Inc. for any damages resulting from such improper usage or sale. 1 © Copyright 2001, Capella Microsystems, Inc. CM1215 CM1215 - Integrated PD+TIA CM1215 CM1215 Pin Descriptions Pin No. Symbol I/O Equivalent Circuit Description 1 2 4 5 DOUT AOUT BOUT COUT O 3 NC 6 10 EOUT FOUT O Output of electrical signals converted from optical signals 7 GND I Single power supply: GND 8 Vc I Single power supply: center voltage input 9 Vcc I Positive power supply Output of electrical signals converted from optical signals Common with GND for the package construction 2 © Copyright 2001, Capella Microsystems, Inc. CM1215 CM1215 - Integrated PD+TIA Absolute Maximum Ratings (Ta = 25°C) ° Description Power Supply Voltage Operating Temperature Storage Temperature Allowable Power Dissipation Symbol Vcc Topr Tstg PD Value 7.0 -20 ~ +75 -40 ~ +85 200 Unit V °C °C mW Operating Conditions Description Supply Voltage (* Note 1) Reference Voltage (* Note 2) Signal Vcc Vc Condition Vcc/2 Min 2.5 1.25 Typ 5.0 2.5 Max 5.5 2.75 Unit V V Electrical & Optical Characteristics (Vcc = 5V, Vs = 2.5V, Ta = 25°C) ° Signal Condition Min Typ Max Unit Current Consumption Icc (*Note 3) - 6.0 8.0 mA Applicable to Vcc Output Offset Voltage Voff Offset voltage with Respect to Vc (*Note 3) -15 0 +15 mV AOUT ~ FOUT -20 0 +20 mV AOUT ~ DOUT -20 0 +20 mV AOUT ~ DOUT -20 0 +20 mV AOUT ~ DOUT -15 0 +15 mV EOUT ~ FOUT 290 610 4.0 4.0 6.0 100 370 770 4.2 4.2 8.0 400 450 930 - mV mV V V MHz KHz AOUT ~ EOUT ~ AOUT ~ EOUT ~ AOUT ~ EOUT ~ Description Output Offset Voltage Difference Output Voltage (A-D) Output Voltage (E-F) Max. Output Voltage (A-D) Max. Output Voltage (E-F) Cutoff Frequency (A-D) Cutoff Frequency (E-F) * * * * * * Note Note Note Note Note Note 1: 2: 3: 4: 5: 6: Voff Vo Vo Vomax Vomax fc fc (A+B) (C+D) (*Note 3) (A+D) (B+C) (*Note 3) (A+C) - (B+D) (*Note 3) (E - F) (*Note 3) Po = 10µW, =780nm Po = 10µW, =780nm Po = 100µW, =780nm Po = 100µW, =780nm 100KHz, -3dB 10KHz, -3dB DOUT FOUT DOUT FOUT DOUT FOUT The CM1215 CM1215 is based on a single power supply Vc must be able to sink / source ±500µA Dark Condition. There is no light incident on the photodiodes The output voltage and the output offset voltage are with respect to Vc The maximum output voltage is with respect to GND The output voltage parameters and the frequency characteristics are guaranteed by design 3 © Copyright 2001, Capella Microsystems, Inc. CM1215 CM1215 - Integrated PD+TIA 20 0 Package center equals PD center. 45° F D 0 12 C A 30 B 50 5 E 50 5 30 12 0 Units: µm Figure 2: CM1215 CM1215 Photodiode Alignment 10k DOUT FOUT 10 2 AOUT Vcc NC Vc 8 4 BOUT GND 7 5 COUT EOUT 6 10k 9 3 10k 1 Vcc Vc 10k 10k 10k Figure 3: CM1215 CM1215 Test Measurement Circuit Diagram 4 © Copyright 2001, Capella Microsystems, Inc. CM1215 CM1215 - Integrated PD+TIA Figure 4: CM1215 CM1215 CMP Package Dimensions 2.5±0.2 (IC Center) DOUT 1 NC 3 D A B C 8 Vc E BOUT 4 4.0±0.1 9 Vcc F PDIC 7 GND 45° COUT 5 resisit 6 EOUT 0.5 1.1 Package Center 3.8±0.1 5.0±0.1 1.1 0.5 0.7 Sealed Resin 10 FOUT AOUT 2 Package Center 0.3±0.1 PDIC Unit: (mm) PDIC Note: Package dimensions may be subject to change. Figure 5: CM1215 CM1215 COB Package Dimensions 5 © Copyright 2001, Capella Microsystems, Inc.