HD49330AF Renesas Electronics Corporation., HD49330AF Datasheet

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HD49330AF

Manufacturer Part Number
HD49330AF
Description
Cds/pga & 12-bit A/d Converter
Manufacturer
Renesas Electronics Corporation.
Datasheet
HD49330AF/AHF
CDS/PGA & 12-bit A/D Converter
Description
The HD49330AF/AHF is a CMOS IC that provides CDS-PGA analog processing (CDS/PGA) suitable for CCD camera
digital signal processing systems together with a 12-bit A/D converter in a single chip.
Functions
• Correlated double sampling
• PGA
• Offset compensation
• Serial interface control
• 12-bit ADC
• Operates using only the 3 V voltage
• Corresponds to switching mode of power dissipation and operating frequency
• ADC direct input mode
• Y-IN direct input mode
• QFP 48-pin package
Features
• Suppresses low-frequency noise output from CCD by the S/H type correlated double sampling.
• The S/H response frequency characteristics for the reference level can be adjusted using values of external parts and
• High sensitivity is achieved due to the high S/N ratio and a wide coverage provided by a PG amplifier.
• Feedback is used to compensate and reduce the DC offsets including the output DC offset due to PGA gain change
• PGA, standby mode, etc., is achieved via a serial interface.
• High precision is provided by a 12-bit-resolution A/D converter.
Rev.1.0, Apr.05.2004, page 1 of 19
Power dissipation: 150 mW (Typ), maximum frequency: 36 MHz
Power dissipation: 80 mW (Typ), maximum frequency: 20 MHz
registers.
and the CCD offset in the CDS (correlated double sampling) amplifier input.
(Previous: ADE-207-344)
REJ03F0102-0100Z
Apr.05.2004
Rev.1.0

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HD49330AF Summary of contents

Page 1

... HD49330AF/AHF CDS/PGA & 12-bit A/D Converter Description The HD49330AF/AHF is a CMOS IC that provides CDS-PGA analog processing (CDS/PGA) suitable for CCD camera digital signal processing systems together with a 12-bit A/D converter in a single chip. Functions • Correlated double sampling • PGA • Offset compensation • ...

Page 2

... HD49330AF/AHF Pin Arrangement VRM VRT VRB OEB SDATA SCK Pin Description Pin No. Symbol Description 1 D0 Digital output (LSB D10 Digital output 12 D11 Digital output (MSB) 13 DRDV Output buffer power supply ( Digital ground (0 V) ...

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... HD49330AF/AHF Pin Description (cont.) Pin No. Symbol Description 32 BIAS Internal bias pin Connect a 33 kΩ resistor between BIAS and Analog power supply ( input pin 35 AV Analog ground ( ADCIN ADC input pin 37 VRM Reference voltage pin 1 Connect a 0.1 µF ceramic capacitor between VRM and AV ...

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... HD49330AF/AHF Input/Output Equivalent Circuit Pin Name Digital output D0 to D11 Digital input ADCLK, OBP, SPBLK, SPSIG, CS, SCK, SDATA, PBLK, OEB Analog CDSIN ADCIN Y IN BLKSH, BLKFB VRT, VRM, VRB BIAS Rev.1.0, Apr.05.2004, page Equivalent Circuit DIN STBY DV DD Digital input Note: Only OEB is pulled down to about 70 k ...

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... HD49330AF/AHF Block Diagram ADCIN PBLK 26 CDSIN 26 CDS BLKSH 28 BLKC 28 DC offset BLKFB 29 compensation circuit 17 Rev.1.0, Apr.05.2004, page Timing generator 12 bit PGA ADC Serial Bias interface generator OEB 11 D11 10 D10 ...

Page 6

... VRT BLKFB C3 Figure 1 HD49330AF/AHF Functional Block Diagram 1. CDS (Correlated Double Sampling) Circuit The CDS circuit extracts the voltage differential between the black level and a signal including the black level. The black level is directly sampled using the SPBLK pulse, buffered by the SHAMP, then provided to the CDSAMP ...

Page 7

... HD49330AF/AHF 2. PGA Circuit The PGAMP is the programmable gain amplifier for the latter stage. The PGAMP and the CDSAMP set the gain using 10 bits of register. The equation below shows how the gain changes when register value N is from 0 to 1023. In CDSIN mode: Gain = (–2. 0.033 dB) × N (LOG linear). ...

Page 8

... HD49330AF/AHF 6. ADC Digital Output Control Function The ADC digital output includes the functions output enable, code conversion, and test mode. Tables 3, 4 and 5 show the output functions and the codes. Table 3 ADC Digital Output Functions D11 D10 Hi ...

Page 9

... HD49330AF/AHF 7. Adjustment of Black-Level S/H Response Frequency Characteristics The CR time constant that is used for sampling/hold (S/H) at the black level can be adjusted by changing the register settings, as shown in table 6. Table 6 SHSW CR Time Constant Setting SHSW-fsel (Register setting) [0] [1] [ Time Constant (Typ) 2.20 nsec (cutoff frequency conversion) ...

Page 10

... HD49330AF/AHF Timing Chart Figure 2 shows the timing chart when CDSIN and ADCIN input modes are used When CDSIN input mode is used N CDSIN SPBLK SPSIG ADCLK D0 to D11 N−12 When ADCIN input mode is used N+1 N ADCIN ADCLK D0 to D11 N−11 Note: The phases of SPBLK and SPSIG are those when the serial data SPinv bit is set to low. ...

Page 11

... HD49330AF/AHF Detailed Timing Specifications Detailed Timing Specifications when CDSIN Input Mode is Used Figure 3 shows the detailed timing specifications when the CDSIN input mode is used, and table 8 shows each timing specification. CDSIN SPBLK SPSIG ADCLK D0 to D11 Note: 1. When serial data Spinv bit is set to low. (When the Spinv bit is set to high, the polarities of the SPBLK and the SPSIG are inverted ...

Page 12

... HD49330AF/AHF Detailed Timing Specifications at Pre-Blanking Figure 5 shows the pre-blanking detailed timing specifications. PBLK Digital output (D0 to D11) When serial data SPinv bit is set to low (When the SPinv is set to high, the PBLK polarity is inverted.) Figure 5 Detailed Timing Specifications at Pre-Blanking Detailed Timing Specifications when ADCIN Input Mode is Used Figure 6 shows the detailed timing chart when ADCIN input mode is used, and table 9 shows each timing specification ...

Page 13

... HD49330AF/AHF Serial Interface Specifications Table 10 Serial Data Function List Resister (LSB) Low DI 01 Low DI 02 Low Low: Normal operation mode PGA gain setting (LSB) * SLP High: Sleep mode Low: Normal operation mode PGA gain setting * STBY High: Standby mode ...

Page 14

... HD49330AF/AHF Absolute Maximum Ratings Item Power supply voltage Analog input voltage Digital input voltage Operating temperature Power dissipation Storage temperature Power supply voltage range Notes indicates AV and and DV must be commonly connected outside the IC. When they are separated by a noise filter, the ...

Page 15

... HD49330AF/AHF Electrical Characteristics (cont.) (Unless othewide specified 25°C, AV • Items for CDSIN Input Mode Item Symbol Consumption current (1) I DD1 Consumption current (2) I DD2 CCD offset tolerance range V CCD Timing specifications (1) t CDS1 Timing specifications (2) t CDS2 Timing specifications (3) t CDS3 ...

Page 16

... TG and ADCLK camera DSP OBP etc more HD49330AF/AHF serial data transfer RESET bit Automatic offset calibration The following describes the above serial data transfer. For details on registers and 3, refer to table 10. (1) Register 2 setting : Set all bits in register 2 to the usage condition, and set the RESET bit to low. ...

Page 17

... Also, use of dedicated ports is recommended for the SCK and SDATA signals used in the HD49330AF. If ports are to be shared with another IC, picture quality should first be thoroughly checked. 12. At power-on, automatic adjustment of the offset voltage generated from PGA, ADC, etc., must be implemented in accordance with the power-on operating sequence (see page 16) ...

Page 18

... C22 0.1 0.1 0.1 0.1 0.1 0.1 C13 C12 C11 0.1 0.1 0 D11 D10 BLKSH 28 BLKFB 29 CDSIN 30 HD49330AF/AHF (CDS/PGA+ADC) BLKC 31 BIAS ADCIN C16 47/6 C17 C18 C19 C20 C21 C22 0.1 0.1 0.1 0.1 0.1 0.1 ...

Page 19

... HD49330AF/AHF Package Dimensions 9.0 ± 0 *0.21 ± 0.05 0.19 ± 0.04 *Dimension including the plating thickness Base material dimension Rev.1.0, Apr.05.2004, page 7 0.08 M 0.75 0.75 0.50 ± 0.10 0.10 Package Code JEDEC JEITA Mass (reference value January, 2003 Unit: mm 1.00 0˚ – 8˚ FP-48C — ...

Page 20

Sales Strategic Planning Div. Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble ...

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