TH7834C Datasheet, PDF (6/13 Pages) ATMEL Corporation – Very Highresolution Linear CCD Image Sensor (12000 Pixels)

Operating
Precautions
Shorting the video outputs to VSS or VDD, even temporarily, can permanently damage
the output amplifiers.
Operating Conditions (T = 25°C)
Table 1. DC Characteristics
Value
Parameter
Symbol
Min.
Typ.
Max.
Unit
Output Amplifier Drain Supply
V_DD1-2, V_DD3-4
14.5
15
15.5
V
Substrate Voltage
V_SS
0
0
V
Reset DC Bias
V_DR1, V_DR2, V_DR3, V_DR4
V_DD - 0.5
V
Output Amplifier Source Bias
V_S1, V_S2, V_S3, V_S4
0
V
Output Gate DC Bias
V_GS1-2, V_GS3-4
2.2
2.4
2.6
V
Photosensitive Zone DC Bias
V_ST
3.5
4
4.5
V
Antiblooming Diode Bias
VA_1-2, VA_3-4
14
14.5
15
V
Note: If no exposure time control is required, Φ_A1-2 and Φ_A3-4 must be connected to an adjustable DC bias (see Figure 7).
Typical current in V_DR, V_A < 10 µA; in V_GS, V_ST < 1 µA.
Timing Diagram
Figure 3. Line Timing Diagram
ΦP1-2 ΦP3-4
ΦL1, ΦL2
ΦLS1-2, ΦLS3-4
ΦR1-2, ΦR3-4
External
ΦEc1
(clamp)
ΦEch
(Sampling)
Detailed timing diagram
for transfert from
photosite to register
(see fig. 4)
Detailed pixel
timing diagram
(see fig. 5)
Readout time for line M
Integration time Ti for line M+1
Pixel N
Cleaning
• Minimum exposure time: Ti min = readout time.
For data rate of 5 MHz: Ti min = ₅---³---_M0---⁴--_H--³--_z-- = 608.6 µs.
Note: It is better to clean the shift registers (with running clocks) and not to stop clocking them
after readout time.
6 TH7834C
1997A–IMAGE–05/02