TC246CYM-B0

SOCS089 – MAY 2005

TEXAS

INSTRUMENTS

POST OFFICE BOX 655303 * DALLAS TEXAS 75265

9

Electrical characteristics over recommended operating ranges of supply

voltage at operating free-air temperature (unless otherwise noted)

PARAMETER

MIN

TYP

MAX

UNIT

Charge multiplication gain *

1

200

2000

-

Excess noise factor for typical CCM gain (Note 3)

1

1.4

-

Dynamic range without CCM gain

69

dB

Dynamic range with typical CCM gain (Note 4)

75

dB

Charge conversion gain without CCM gain (Note 5)

14

uV/e

τ Signal-response delay time (Note 6)

16

ns

Output resistance

320

Ω

Amp. Noise-equivalent signal without CCM gain **

20

e

Amp. Noise-equivalent signal with typ. CCM gain **

1.0

e

Response linearity with no CCM gain

1

-

Response linearity with typ. CCM gain

1

-

Parallel transfer

0.99994

1.0

-

Charge-transfer efficiency

(Note 7)

Serial transfer

0.99994

1.0

-

Supply current

2.0

mA

IAG1

3

IAG2

7

IAG1-IAG2

3

SAG1

4

SAG2

5

SAG1-SAG2

3

nF

SRG1

85

SRG2

55

CMG

25

ODB

2,000

Ci Input capacitance

RST

7

pF

All typical values are at Ta = 25 °C unless otherwise noted.

* Maximum CCM gain is not guaranteed.

** The values in the table are quoted using CDS = Correlated Double Sampling. CDS is a signal

processing technique that improves performance by minimizing undesirable effects of reset noise.

Notes :

3. Excess Noise Factor “F” is defined as the ratio of noise sigma after multiplication divided by M

times the noise sigma before multiplication where M is the charge multiplication gain.

4. Dynamic Range is –20 times the logarithm of the noise sigma divided by the saturation–output

signal amplitude

5. Charge conversion factor is defined as the ratio of output signal to input number of electrons.

6. Signal-response delay time is the time between the falling edge of the SRG1 pulse and the output-

signal valid state.

7. Charge transfer efficiency is one minus the charge loss per transfer in the CCD register. The test is

performed in the dark using either electrical or optical input.