E2v CCD42-90 Manuale utente

FEATURES

*2048 by 4608 Pixel Format

*13.5 mm Square Pixels

*Image Area 27.6 x 62.2 mm

*Back Illuminated Format for High Quantum Efficiency

*Low Noise Output Amplifiers

*Wide Dynamic Range

*Symmetrical Anti-static Gate Protection

*3-side Buttable Package

*Gated Dump Drain on Readout Register

*Flatness better than 15 mm peak to valley

APPLICATIONS

*Astronomy

*Scientific Imaging

INTRODUCTION

This version of the CCD42 family of CCD sensors has full-frame

architecture. Back illumination technology, in combination with

an extremely low noise amplifier, makes the device well suited

to the most demanding applications, such as astronomy.

The output amplifier is designed to give excellent noise levels at

low pixel rates and can match the noise performance of most

conventional scientific CCDs at pixel rates as high as 1 MHz.

The low output impedance and optional FET buffer simplify the

interface with external electronics.

The readout register has a gate controlled dump-drain to allow

fast dumping of unwanted data. The register is designed to

accommodate four image pixels of charge and a summing well

is provided capable of holding six image pixels. The output

amplifier has a feature to enable the responsivity to be reduced,

allowing the reading of such large charge packets.

The device is supplied in a package designed to facilitate the

construction of large close-butted mosaics and is designed to

be used cryogenically. The design of the package will ensure

that the device flatness is maintained at the working

temperature.

The sensor is shipped in a protective container, but no

permanent window is fitted.

TYPICAL PERFORMANCE (at 173 K)

Pixel readout frequency .....20–3000 kHz

Output amplifier sensitivity .......4.5 mV/e

Peak signal ........... 150 ke

/pixel

Spectral range ....... 200–1060 nm

Readout noise (at 20 kHz) .......3 e

rms

QEat500nm .......... 90 %

Charge transfer efficiency ...... 99.9995 %

GENERAL DATA

Format

Image area ......... 27.6 x 62.2 mm

Active pixels (H) ........ 2048

(V) .......4608 + 4

Pixel size .......... 13.5 x 13.5 mm

Number of output amplifiers ......2

Number of underscan (serial) pixels . . . 50

The device has a 100% fill factor.

Package

Format .... invar metal package with PGA connector

Focal plane height above base ..... 14.0 mm

Package size ......... 28.2 x 67.3 mm

Package weight .......... 150 gapprox

Number of pins .......... 40

Inactive edge spacing:

sides ...........260+50 mm

top ...........120+50 mm

bottom (edge connections) ......5.0 mm

CCD42-90 Back Illuminated

High Performance CCD Sensor

#e2v technologies (uk) limited 2006 A1A-100026 Issue 8, March 2006

411/9572

e2v technologies (uk) limited, Waterhouse Lane, Chelmsford, Essex CM1 2QU, UK Telephone: +44 (0)1245 493493 Facsimile: +44 (0)1245 492492

e-mail: enquiries@e2v.com Internet: www.e2v.com Holding Company: e2v technologies plc

e2v technologies inc. 4 Westchester Plaza, PO Box 1482, Elmsford, NY10523-1482 USA Telephone: (914) 592-6050 Facsimile: (914) 592-5148

e-mail: [email protected]

NOTES

1. Signal level at which resolution begins to degrade.

2. Dark signal is typically measured at 188 K and V

=+9V.

The dark signal at other temperatures may be estimated

from:

= 122T

76400/T

where Q

is the dark current at 293 K.

3. Measurements made using charge generated by X-ray

photons of known energy. Charge transfer efficiency is

measured for a complete three-phase triplet.

4. Operation of the OG2 gate modifies the output node. OG2

= LO (mode 1) is normally used for low noise, high

responsivity. See also note 9.

5. Measured using a dual-slope integrator technique (i.e.

correlated double sampling) with a 10 ms integration period

with OG2 = OG1 + 1 V.

6. Readout above 3000 kHz can be achieved but performance

to the parameters given cannot be guaranteed.

PERFORMANCE (at 173 K unless stated)

Min Typical Max

Peak charge storage (see note 1) 100k 150k - e

/pixel

Peak output voltage (unbinned) 675 mV

Dark signal at 153 K (see note 2) 50.1 1 e

/pixel/hour

Charge transfer efficiency (see note 3):

parallel

serial

99.999

99.9995

Output amplifier sensitivity (see note 4) 3.0 4.5 6.0 mV/e

Readout noise (see note 5) – 3 4 rms e

/pixel

Readout frequency (see note 6) – 20 3000 kHz

Output node capacity (see note 4):

OG2 low (mode 1)

OG2 high (mode 2)

–

200k

1000k

–

electrons

Serial register capacity – 600k – e

/pixel

Spectral Response at 173 K (Astronomy broadband devices)

Spectral Response (QE) Response

Wavelength (nm) Typical Min Non-uniformity, max (1s)

350 50 40 – %

400 80 70 3 %

500 90 80 – %

650 80 75 3 %

900 30 25 5 %

Note Devices with alternate spectral response are also available.

ELECTRICAL INTERFACE CHARACTERISTICS

Electrode capacitances (measured at mid-clock level)

Min Typical Max

I1/I1interphase – 35 – nF

R1/R1interphase – 80 – pF

I1/SS – 70 – nF

R1/SS – 150 – pF

Output impedance – 350 – O

100026, page 2 #e2v technologies

100

300 400 500 600 700 800 900 1000 1100

QUANTUM EFFICIENCY (%)

WAVELENGTH (nm)

7640A

TYPICAL SPECTRAL RESPONSE

(At 790 8C, measured with astronomy broadband AR coating)

TYPICAL OUTPUT CIRCUIT NOISE

(Measured using clamp and sample, temperature range 140 - 230 K)

7639

NOISE EQUIVALENT SIGNAL (e

—

rms)

10k 50k 100k 500k 1M 5M

FREQUENCY (Hz)

#e2v technologies 100026, page 3

BLEMISH SPECIFICATION

Traps Pixels where charge is temporarily held.

Traps are counted if they have a capacity

greater than 200 e

at 173 K.

Slipped columns

Are counted if they have an amplitude

greater than 200 e

Black spots Are counted when they have a responsivity

of less than 80% of the local mean signal.

White spots Are counted when they have a generation

rate equivalent to 100 electrons per pixel

per hour at 153 K (typically measured at

188 K). The typical temperature depen-

dence of white spot blemishes is the same

as that of the average dark signal, i.e.:

= 122T

76400/T

Column defects A column which contains at least 100 white

or black defects.

CLOCK ARCHITECTURE

GRADE 0123

Column defects

(black or white) 2 6 12 24

White spots 300 450 800 1200

Traps 15 30 50 75

Total spots

(black and white)

900 1350 2000 3000

GRADE 5 Devices which are fully functional, with

image quality below that of grade 3, and

which may not meet all other performance

parameters; not all parameters may be

tested.

100026, page 4 #e2v technologies

123

nth line

Fourth line

Third line

Second line

First line

321321321

1024th column – right section

1st column – right section

123 123123123

Parallel transfer phases

50 elements

213

13213213213213

Serial transfer phases

12312312

312

50 elements

1SWL

OG1L

OG2L

OSL

R12L

R11L

R13

R11R

R12R

OSR

OG2R

OG1R

1SWR

7896

CONNECTIONS, TYPICAL VOLTAGES AND ABSOLUTE MAXIMUM RATINGS

40-pin PGA connector

CLOCK CLOCK HIGH OR

PGA LOW DC LEVEL (V) MAXIMUM RATINGS

PIN REF DESCRIPTION Typical Min Typical Max with respect to V

A1, A8,

C1, C8,

F2, F7

Substrate n/a 0 9 10 –

D8 I11 Image area clock, phase 1 0 8 10 15 +20 V

E8 I12 Image area clock, phase 2 0 8 10 15 +20 V

F8 I13 Image area clock, phase 3 0 8 10 15 +20 V

D4 R11(L) Register clock phase 1 (left) 1 9 11 15 +20 V

E4 R12(L) Register clock phase 2 (left) 1 9 11 15 +20 V

D5 R11(R) Register clock phase 1 (right) (see note 7) 1 9 11 15 +20 V

E5 R12(R) Register clock phase 2 (right) (see note 7) 1 9 11 15 +20 V

F6 R13 Register clock phase 3 1 9 11 15 +20 V

E3 1R(L) Reset gate (left) 0 9 12 15 +20 V

E6 1R(R) Reset gate (right) 0 9 12 15 +20 V

E2 1SW(L) Summing well gate (left) 0 9 11 15 +20 V

E7 1SW(R) Summing well gate (right) 0 9 11 15 +20 V

F3 DG Dump gate (see note 8) 0 – 12 15 +20 V

D3 OG1(L) Output gate 1 (left) n/a 2 3 4 +20 V

D6 OG1(R) Output gate 1 (right) n/a 2 3 4 +20 V

B2 DD(L) Dump drain (left) n/a 20 24 26 70.3 to +30 V

B7 DD(R) Dump drain (right) n/a 20 24 26 70.3 to +30 V

D2 OG2(L) Output gate 2 (left) (see note 9) 4 16 20 24 +20 V

D7 OG2(R) Output gate 2 (right) (see note 9) 4 16 20 24 +20 V

B1 OD(L) Output drain (left) n/a 27 29 – 70.3 to +35 V

B8 OD(R) Output drain (right) n/a 27 29 – 70.3 to +35 V

A2 OS(L) Output source (left) n/a see note 10 70.3 to +25 V

A7 OS(R) Output source (right) n/a see note 10 70.3 to +25 V

C2 RD(L) Reset drain (left) n/a 15 17 – 70.3 to +25 V

C7 RD(R) Reset drain (right) n/a 15 17 – 70.3 to +25 V

Optional connections for 309 JFET

A3 RL(L) Load resistor (left) A

GND

(0 V)

A6 RL(R) Load resistor (right) A

GND

(0 V)

B3 OP(L) JFET source (left) see note 11

B6 OP(R) JFET source (right) see note 11

C3 JD(L) JFET drain (left) OD(L) +2 V

C6 JD(R) JFET drain (right) OD(L) +2 V

Other connections (options)

D1, F1 Temp Temperature sensor Thermistor

E1 – No connection –

If all voltages are set to the typical values operation at, or close to, specification should be obtained. Some adjustment within the

minimum - maximum range specified may be required to optimise performance. Refer to the specific device test data if possible.

Maximum voltage between pairs of pins: OS to OD +15 V.

Maximum current through any source or drain pin: 10 mA.

The CCD is not electrically connected to the metal package.

#e2v technologies 100026, page 5

7907

2048 (H) x 4612 (V) PIXELS

13.5 mm SQUARE

50 BLANK

ELEMENTS

50 BLANK

ELEMENTS

NOTES

7. With the R1connections shown, this device will operate through both outputs simultaneously (split serial mode). To operate

from the left-hand output only, R11(R) and R12(R) should be reversed, i.e. pin D5 = R12(R) and E5 = R11(R).

8. This gate is normally low. It should be pulsed high for charge dump.

9. OG2=OG1 + 1 V; for operation in high responsivity, low noise mode. For operation in low responsivity, increased charge

handling mode, OG2 should be set high.

10. OS = 3 to 5 V below OD typically. Use a3–5mAcurrent source or a 5 – 10 kOload.

11. The JFET is floating, with its gate connected to OS. A floating 10 kOload resistor is also connected to OS. The FET may be used

to buffer the chip output (OS) if desired; in this case, connect the FET output to A

GND

via a 5 mA load and RL directly to A

GND

(U309 data: V

and V

absolute maximum = 725 V). See detail below.

DEVICE SCHEMATIC Detail of FET Buffer

OUTPUT CIRCUIT

100026, page 6 #e2v technologies

1SW OG2OG1121RRD I13OD

LS(SS) 0 V

OUTPUT

EXTERNAL

LOAD

7641

10 kO

GND

EXTERNAL

LOAD

7885B

FRAME READOUT TIMING DIAGRAM

DETAIL OF LINE TRANSFER (Not to scale)

NOTES

12. Clock edges are defined at mid-amplitude points.

13. Rise and fall times should be 4overlap times.

14. Alternate patterns may be used provided sequence and minimum overlaps are maintained.

#e2v technologies 100026, page 7

CHARGE COLLECTION PERIOD

READOUT PERIOD 54612 CYCLES 7908A

I11

I12

I13

R11

R12

R13

OUTPUT

SWEEPOUT

FIRST VALID DATA

SEE DETAIL OF

LINE TRANSFER

SEE DETAIL OF

OUTPUT CLOCKING

I11

I12

I13

R11

R12

R13, SW1

3 3

dri

dir

7644A

DETAIL OF VERTICAL LINE TRANSFER (Single line dump)

DETAIL OF VERTICAL LINE TRANSFER (Multiple line dump)

100026, page 8 #e2v technologies

I11

I12

I13

R11

R12

R13, SW1

7990

END OF

PREVIOUS LINE

READOUT

LINE

TRANSFER

INTO

DUMP SINGLE LINE

FROM REGISTER TO

DUMP DRAIN

LINE

TRANSFER

INTO

START OF

LINE

READOUT

I11

I12

I13

R11

R12

R13, SW1

7991

END OF

PREVIOUS LINE

READOUT

1ST LINE 2ND LINE 3RD LINE CLEAR

READOUT

DUMP MULTIPLE LINE FROM REGISTER

TO DUMP DRAIN

LINE

TRANSFER

INTO

START OF

LINE

READOUT

DETAIL OF OUTPUT CLOCKING (Operation through both outputs)

LINE OUTPUT FORMAT (Split read-out operation)

CLOCK TIMING REQUIREMENTS

Symbol Description Min Typical Max

Image clock period 6t

100 see note 15 ms

Image clock pulse width 3t

50 see note 15 ms

Image clock pulse rise time (10 to 90%) 1 10 0.5t

Image clock pulse fall time (10 to 90%) t

10 0.5t

Image clock pulse overlap 5 10 0.2T

dir

Delay time, I1stop to R1start 10 20 see note 15 ms

dri

Delay time, R1stop to I1start 1 2 see note 15 ms

Output register clock cycle period 300 see note 16 see note 15 ns

Clock pulse rise time (10 to 90%) 50 0.1T

0.3T

Clock pulse fall time (10 to 90%) t

0.1T

0.3T

Clock pulse overlap 50 0.5t

0.1T

Reset pulse width 50 0.1T

0.2T

Reset pulse rise and fall times 20 0.5t

0.2T

Delay time, 1R low to R13 low 50 0.5T

0.8T

NOTES

15. No maximum other than that necessary to achieve an acceptable readout time.

16. As set by the readout period (1 ms to 100 ms is typical).

#e2v technologies 100026, page 9

R11

R12

R13, SW1

7989

OUTPUT

VALID

SIGNAL

OUTPUT

RESET FEEDTHROUGH

50 BLANK

1024 ACTIVE OUTPUTS

7645

AC AD

SEE NOTE

2 HOLES

M4 x M DEEP

FULL THREAD

P (4 PLACES)

4 HOLES TO TAKE

M3 SHIM STUDS

SEE NOTE

HOLE 1R x S DEEP

Z PITCH

6 HOLES

M2.5 x V DEEP

FULL THREAD

ABCDEF

7906B

OUTLINE

(All dimensions without limits are nominal)

Ref Millimetres

A 67.32 max

B 28.168 +0.010

C 64.96 +0.01

D 11.65

E 6.00

F 1.00

G 5.00

H 4.800 +0.005

J 14.35

K 12.60

L 4.60

M 6.00 min

P 8.00

Q 2.50

R 2.50

S 6.50

T 27.00

U 9.50

V 5.50 min

W 20.60

X 31.60

Y 44.60

Z 2.54

AA 2.70

AB 24.50

AC 14.00 +0.01

AD 15.00 +0.01

8.50 +0.01

PIN CONNECTION DETAILS

(See page 5)

Outline Note

The device is supplied with shim studs to hold it onto the

customer’s mounting plate, fitted to three of the four holes as

required. The studs are available in two lengths (see dimension

AD). The default unless specified is the 15.00 mm stud in the

offset position.

100026, page 10 #e2v technologies

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