Email and Errata for CMOS Mixed-Signal Circuit Design

 

Email

1.  In the switched-capacitor circuits discussed in the MSD book all that sample …

2.  Isn’t the KD1S in Fig. 9.4 simply a multi-bit modulator, Sec. 7.3.4?

3.  Additional comments on the use of K-paths (aka N-paths) seen on pages 52 – 53

4.  Won’t timing issues (e.g., clock skew and clock jitter) that plague every time-interleaved topology be a problem with the KD1S topology?

5.  Shouldn’t the modulation noise in Fig. 8.16 be less than what is seen in Fig. 8.14 adjacent to the input tone? Yes, see SPICE simulation comments here.

6.  What, in simple terms, is the benefit of the KD1S topology?

7.  Does a S/H followed by a Nyquist-rate ADC still experience the Sinc response discussed in Sec. 2.1.3?

8.  Would you post the first edition’s Ch. 36, at the bench? Yes, Ch36_1e_MSD.pdf.

9.  Would you post an example of a continuous-time KD1S? Yes, see CT_KD1S.zip for an LTspice example with Matlab scripts.

 

Errata

Typos found in the 2nd Edition of CMOS Mixed-Signal Circuit Design, ISBN 978-0-470-29026-2, published December, 2008

 

Typos found in the 2nd and later printings of the 2nd Edition

pages 123-125, 128, 131, 137, 204-205, 274 change "binary offset" to "offset binary" (yes, minor ;-). It's listed both ways in the Index 

page 142 - in Fig. 4.31 use fs,new instead of fs in the labels on the x-axis  

page 172 - there are 25 points (from DC to 50 MHz) in Fig. 5.14 not 32 as indicated in the paragraph above this figure   

page 288 - frequency is misspelled in Fig. 8.3

 

Typos fixed in the 2nd printing of the 2nd Edition

pages 5-6 –  as mentioned on page 4 the cosine signal leads the sine signal by 90 degrees. This means that the quadrature signal, with amplitude AQ, in Fig. 1.6 should be drawn pointing down on the y-axis instead of up. The way it’s currently drawn the sine signal leads the cosine signal. With this correction the phase shift in Eqs. (1.10) and (1.11) should be negated (change tan–1 to –tan–1). Also the I and Q letters in Fig. 1.6 should be swapped (I on the x-axis and Q on the y-axis)

page 12 –     Fig. 1.14b, replace vin(f) = z^-1*vout(f) with vout(f) = z^-1*vin(f), in other words swap vin and vout

page 23 –     Eq. (1.81) is incorrect. The delay is already represented in the frequency domain so it doesn’t make sense to take its Fourier transform. This will be changed to show that the Fourier transform of a time shifted signal, x(t – t0), has a frequency spectrum representation of X(f)*exp(-j2*pi*f*t0)

page 26 –     Question 1.17, time was not included in the arguments of the sinusoids. They should read sin(2*pi*f0*t + theta) and cos(2*pi*f0*t + phi)

page 38 –     11th line down change –39.7 to –39.2

page 42 –     Eq. (2.17), [u(t – nTs – T) – u(t – NTs – Ts)] isn’t h_t(t). h_t(t) is [u(t – T) – u(t  – Ts)] (to fix the typo remove the label h_t(t) in the first line of the equation)

page 43 –     fifth line from the bottom change “(call interpolation)” to “(called interpolation)”

page 46 –     add a space two lines above Eq. (2.30) so that “Eq. [2.16]).In” changes to “Eq. [2.16]). In” (add a space)

page 52 –     The left side of Eq. (2.53) should have magnitude brackets

page 54 –     14th line down change CI to CF

page 58 –     in Fig. 2.41 change the CH to CF so that it matches the derivations, add “–” sign to exponents in Eqs. (2.73) and (2.74), and minor correction to the derivation of the autozero, see here

page 61 –     5th line down remove “that” and change “is” to “are”

page 63 –     7th line down change (2.63) to (2.83)

page 64 –     fix spacing in Fig. 2.50 caption

pages 65-66 – correction to the derivation of single-ended S/H response, see here. Also, 7th line down on page 66 change “uncharged” to “discharged”

page 66 –     remove the extra space at the end of Table 2.2’s caption

page 71 –     Question 2.3, change “returning the output of the S/H reduces…” to “returning the output of the S/H to zero reduces…” and change 2.2 to 2.4 in Fig. 2.59 caption

page 72 –     change CH to CF in question 2.12 to correspond to the change on page 58 listed above

page 73 –     sixth line down remove the space between continuous- and time, last line in first paragraph add hyphen between higher and order.

page 76 –     Figure 3.5 caption, replace 35.4 with 3.4

page 85 -     change, in Eq. (3.29), Vtune to (Vtune - 2vin+)  

page 86 –     change the label on the y-axis in Fig. 3.15b from iout+ iout to iout+ = iout

page 87 –     Eq. (3.30) remove the minus sign in front of iout since iout = iout+

page 93 –     Figure 3.25 caption should refer to Fig. 3.24 not Fig. 5.24

page 102 –   Figure 3.35 change the plus sign in the denominator of the “max” equation to a minus sign

page 115 –    swap the outputs of the gm4 transconductor in Fig. 3.53

page 117 –    Questions 3.18 and 3.19 change 35.9 and 35.12 to 3.9 and 3.12

page 124 –   12th line down change “extended and inverted” to “inverted and extended”

page 125 –   Figure 4.7, change the last entry under A from (1) to (+1) and add OF! after the next to the last entry under Out(A + B), 0010 (+2) OF!

page 126 –   Figure 4.8, change the last entry under Out(A-B) from 0001 (-1) to 0001 (+1) OF!

page 127 –   the counter and hold register in Fig. 4.9 should be log2(K) + 1 bits wide not K-bits wide

page 128 –   add K in front of the Sinc ratio in the equation seen in Fig. 4.10 for |H(f)|, see Eq. (4.12), add impulse on the left in Fig. 4.11b so symmetrical

page 131 –    in Fig. 4.14 show the first inverter’s output as 2-bits and the input to the comb filter is 9 bits

page 136 –   change “filer” to “filter” in the caption in Fig. 4.22

page 137 –   in Fig. 4.24 show the first inverter’s output as 2-bits, 7-bits below the inverter instead of 8, and the input to the comb filter is 9 bits. Also, in Fig. 4.24 the sign bit only needs to be extended by 1 on the input of the resonator so a 10-bit DAC is used

pages 140 and 144 –         4th line from the bottom change “integrators” to “integrator” and there are two Example 4.8s so re-label the one on page 140 “Example 8a” and the one on page 144 “Example 8b”.

page 142 -   add (KM)L before the magnitude brackets in Eq. (4.33) and to the y-axis of the Sinc plot in Fig. 4.31, change M to MK in Fig. 4.31, remove magnitude equation in Fig. 4.31 since it’s the same as Eq. (4.33), and finally two lines above Fig. 4.31 change the K to KM so the number of bits the integrator section grows is log2 (KM) -1 not log2 K -1

page 143 –   12th line from the top change “write” to “equate”

page 144 –   Figure 4.33 should be modified so that they have 8 humps between DC and fs

page 158 –   bottom two lines, 0.5625 is the result of cascading two 0.75 multipliers not 0.875 multipliers (change 0.875 to 0.75 in last line)

page 160 –   in question 4.9 replace “Repeat question 4.3 for a…” with “Repeat Ex. 4.3 for a…”

page 170 –   Example 5.2 should refer to Fig. 5.13 not Fig. 5.9.

page 174 –   6th line down change Eq. (5.11) to Eq. (5.13)

page 178 –   last line change “of ideal” to “of the ideal”

page 180 –   4th line from the bottom remove the extra space between the word “jitter” and the comma

page 188 –   near midway down the page change (514) to (5.14), also remove the square of 0.858 (it’s already power) in root(0.858 + 1.3^2) = 1.6 mV so SNR is 46.9 dB (instead of 47.1 dB)

page 190 –   Figure 5.26, the unshaded rectangle above the shaded rectangle should be made taller so its area matches the shaded rectangle

page 198 –   14th line from the bottom change 24 dB to 48 dB

page 204 –   Figure 6.2, 3rd waveform add a horizontal line to the right so complete the waveform

page 205 –   after Eq. (6.3) add “Note that, in Fig. 6.4b, we are assuming that the S/H response used in the model for an ADC, Fig. 5.2, is 1 ( f << fs).” Replace, on the 5th line from the bottom line, VQe(0) with NTF(0).

page 207 –   replace second paragraph in Ex. 6.1 with information about the limitations of the comparator in a continuous-time modulator

page 211 –    3rd line from the top change LSB to MSB

page 212 –   Figure 6.12 square both sides of |H(f)|, Eq. (6.27) change K 3 to K 2

page 213 –   Equation (6.30) drop the extra VQe

page 219 –   Caption for Fig. 6.22 fix spelling of implementation

page 220 –   rewrite last line

page 221 –   5th line change “comparator’s” to “comparators”

page 222 –   in Fig. 6.24 indicate that the added amplifier also reduces the effects of the comparator’s delay in addition to comparator offsets

page 239 –   5th line change “Fig. 7.4” to “Fig. 6.1”

page 255 –   6th line from the bottom change Fig. 7.51c to Fig. 7.26c

page 260 –   Eq. (7.67) change “G1” to “G2”, 4th line from bottom, replace "The block diagram of the..." with "The implementation of the ..

page 263 –   change the last sentence to comment on the benefit of the topology, an added extra half clock cycle delay for the comparator to make a decision

page 264 –   5th line above Fig. 7.40 change “7.39” to “7.32”

page 267 –   change “Fig. 7.32 and Eqs. (7.61) and (7.62)” to “Fig. 7.39 and Eqs. (7.68) and (7.69)”

page 272 –   6th line from bottom change "then" to "than"

page 277 –   Eq. (7.108) change “v1(z) + v2(z) + v3(z)” to “v1(z)*z^-1 + v2(z)*(1 – z^-1) + v3(z)*(1 – z^-1)^2”

page 279 –   shift Fig. 7.56 up so that it is in between the two paragraphs, 9th line from the bottom change “v1(z)” to “o1(z)”, 8th line from the bottom change “o1(z)” to “v1(z)”

page 280 –   second line down change y1(t) to v1(t)

page 281 –   add additional references. Shift the HW on the following pages.

page 286 -   swap the I and Q labels in Fig. 8.1. The I sinusoid should lead the Q sinusoid by T/4

page 288 –   add discussion of amplitude modulation from varying comparator delay in Ex. 8.1

page 296 –   2nd line from the bottom change “Figure 8.15” to “Figure 8.16”

page 298 -   swap the I and Q labels in Fig. 8.19. The I sinusoid should lead the Q sinusoid by T/4

page 314 –   1st sentence should end with a period not a question mark

page 315 –   change the discussion in the second two paragraphs to focus on the comparator’s delay

pages 316-317 – minor modification to the delay element in Fig. 9.23 so that there is less non-overlap in the clocks, change the ring oscillator seen in Fig. 9.24 so that the edges of the clocks are more uniformly spaced (extremely important, see paper here and the highlighted text on fourth page).

page 321 –   make minor cosmetic changes

pages 323-324 – add additional reading. Delete question 9.12 and replace it (and re-number as 9.12) with the old 9.13

page 325 –   add pages 187, 207, 288, and 315 to the index entry for amplitude modulation

page 327 –   add page 315 to the limit cycle oscillations entry

 


Sorry, no typo list for the 1st Edition, ISBN 978-0-471-22754-0, published May, 2002.

 

However, the 1st Edition’s supporting material is available in Mixed_Signal_1e.zip or Mixed_Signal_1e.rar

 

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