List of known errors and corrections for

* Analysis and Design of Analog Integrated Circuits,* Fourth Edition,

P. R. Gray, P. J. Hurst, S. H. Lewis, and R. G. Meyer

Wiley, New York, 2001.

P. R. Gray, P. J. Hurst, S. H. Lewis, and R. G. Meyer

Wiley, New York, 2001.

- Posted on January 3, 2002
- In Problem 4.11 on page 338, the following sentence should be added:
For , assume V.
- In Figure 5.9 on page 357, the label
on the axis should be
.
- Equation 5.101 on page 383 is incorrect. To correct it,
square roots should be added to each term inside
the parentheses and both the numerator and the denominator
of the fraction should be squared.
The equation should be:

- Equation 6.68 on page 430 is incorrect.
The order of the terms should be reversed in the equation and in
a sentence before the equation. The correction should read:
To find the systematic offset voltage at the op-amp output, the output voltage in (6.67) should be subtracted from a voltage midway between the supplies. To refer the systematic offset voltage to the op-amp input, this difference should be divided by the op-amp gain. The result is

- In Problem 4.11 on page 338, the following sentence should be added:
- Posted on April 8, 2002
- On page 288, seven lines above the end of Section 4.3.5.1
``... flows in each of side of ...'' should be

``... flows in each side of ...'' - On page 498, Figure 7.10(b):
The voltage across capacitor is labeled but should be
labeled .
- On page 768 (middle):
"the correlation my be neglected in any case" should be

"the correlation may be neglected in any case". - On page 824, Figure 12.16. The lower figure should be labeled
as (b) rather than (a).
- On page 824, Figure 12.36(b): The controlled source should be .

- On page 288, seven lines above the end of Section 4.3.5.1
``... flows in each of side of ...'' should be
- Posted on September 4, 2002
- Equation 12.1 on page 809 is incorrect.
The correct equation is:

- Equation 12.2 on page 810 is incorrect.
The correct equation is:

- Equation 12.1 on page 809 is incorrect.
The correct equation is:
- Posted on December 5, 2002
Equation 7.3 on page 489 is incorrect. (The numerator is wrong.) The correct equation is:

- Posted on April 10, 2003
The last paragraph on page 390 and the first line on page 391 are incorrect. They should be replaced with:

To find the gain of the error amplifier, the key observation is that the small-signal resistance looking into the source of is zero ignoring channel-length modulation. This result stems from the operation of the same negative feedback loop that biases the gate of . If the small-signal voltage at the source of changes, the negative feedback loop works to undo the change. For example, suppose that the source voltage of increases. This change reduces the gate voltage of because operates as a common-source amplifier. Then the source voltage of falls because operates as a source follower. Ignoring channel-length modulation, the source voltage of must be held exactly constant because if is constant. Therefore, the small-signal resistance looking into the source of is zero. As a result, none of the small-signal drain current from flows in . Instead, it all flows in the source of . To calculate the transconductance of the error amplifier, the output at the drain of is connected to a small-signal ground. Since and share the same gate connection, and since their sources each operate at small-signal grounds, the small-signal current in is copied to . Therefore, the entire small-signal current from the differential pair flows at the error-amplifier output and the transconductance is

- Posted on August 11, 2003
- Equation 11.121 on page 792 is incorrect. (A '1' should be
added to the term inside the parantheses.)
The correct equation is:

- Equation 11.121 on page 792 is incorrect. (A '1' should be
added to the term inside the parantheses.)
The correct equation is:
- Posted on September 12, 2003
In Figure 1.3 on page 6, ``Foward'' Bias should be Forward Bias.